Index Catalog // ScholarsArchive@OSU

Wave Modeling Results: Baseline Observations and Modeling for the Reedsport Wave Energy Site

Creator:: Özkan-Haller, H. Tuba
Abstract:: Offshore wave conditions along the Oregon coastline are measured at a handful of buoy locations where directional wave information is available. Most of these buoys are located in deep waters and incoming waves undergo changes as they travel from deep water onto the shelf where wave energy conversion arrays are...
Resource Type:: Technical Report
Full Text:: Observations and Modeling for the Reedsport Wave Energy Site Prepared by H. Tuba Ozkan-Haller

Physical-Environmental Effects of Wave and Offshore Wind Energy Extraction: A Synthesis of Recent Oceanographic Research

Creator:: Haller, Merrick C. and Özkan-Haller, H. Tuba
Abstract:: The ocean deployment of arrays of Wave Energy Converters (WEC arrays) appears likely in the near future, and deployment of offshore wind turbines has already started. These technologies tap into a potential renewable energy resource but also involve complex systems with uncertain environmental consequences that will likely scale with the...
Resource Type:: Presentation
Full Text:: Merrick C. Haller and Tuba Özkan-Haller Oregon State University Oregon State University Chemicals

Publisher's note: "Waves on unsteady currents" [Phys. Fluids 19, 126601 (2007)]

Creator:: Haller, Merrick C. and Özkan-Haller, H. Tuba
Abstract:: This article was originally published online and in print with an incorrect version of Fig. 1. AIP apologizes for this error. All online versions of the article have been corrected.
Resource Type:: Article
Full Text:: . Fluids 19, 126601 „2007…‡ Merrick C. Haller1 and H. Tuba Özkan-Haller2 1School of Civil and Construction

Waves on unsteady currents

Creator:: Haller, Merrick C. and Özkan-Haller, H. Tuba
Abstract:: Models for surface gravity wave propagation in the presence of currents often assume the current field to be quasi-stationary, which implies that the absolute wave frequency is time invariant. However, in the presence of unsteady currents or time-varying water depth, linear wave theory predicts a time variation of the absolute...
Resource Type:: Article
Full Text:: Civil and Construction Engineering, Oregon State University, Corvallis, Oregon 97330, USA H. Tuba Özkan

Bathymetry correction using an adjoint component of a coupled nearshore wave-circulation model: Tests with synthetic velocity data

Creator:: Kurapov, Alexander L. and Özkan-Haller, H. Tuba
Abstract:: The impact of assimilation of wave-averaged flow velocities on the bathymetric correction is studied in tests with synthetic (model-generated) data using tangent-linear and adjoint components of a one-way coupled nearshore wave-circulation model. Weakly and strongly nonlinear regimes are considered, featuring energetic unsteady along-beach flows responding to time-independent wave-averaged forcing due...
Resource Type:: Article
Full Text:: Alexander L. Kurapov1 and H. Tuba €Ozkan-Haller1 Received 19 December 2012; revised 1 July 2013; accepted 6

Forcing and variability of nonstationary rip currents

Creator:: Long, J. W. and Özkan-Haller, H. Tuba
Abstract:: urface wave transformation and the resulting nearshore circulation along a section of coast with strong alongshore bathymetric gradients outside the surf zone are modeled for a consecutive 4 week time period. The modeled hydrodynamics are compared to in situ measurements of waves and currents collected during the Nearshore Canyon Experiment...
Resource Type:: Article
Full Text:: : Long, J. W., and H. T. €Ozkan-Haller (2016), Forcing and variability of nonstationary rip currents, J

Effects of wave-current interaction on shear instabilities of longshore currents

Creator:: Özkan-Haller, H. Tuba and Li, Ye
Abstract:: We examine the effects of wave-current interaction on the dynamics of instabilities of the surf zone longshore current. We utilize coupled models for the simulation of the incident waves and the wave-induced nearshore circulation. The coupling between the models occurs through radiation stress gradient terms (accounting for the generation of...
Resource Type:: Article
Full Text:: instabilities of longshore currents H. Tuba Özkan-Haller College of Oceanic and Atmospheric Sciences, Oregon

Low-frequency characteristics of wave group-forced vortices

Creator:: Long, Joseph W. and Özkan-Haller, H. Tuba
Abstract:: The dynamics of vorticity motions forced by wave groups incident on an alongshore-uniform barred beach are analyzed. For both normally and obliquely incident wave groups, the potential vorticity and enstrophy equations reveal that the temporal variability of wave group–forced vortices is directly linked to the variability in the incoming wave...
Resource Type:: Article
Full Text:: vortices Joseph W. Long1 and H. Tuba Özkan-Haller1 Received 1 May 2008; revised 25 March 2009; accepted

Offshore controls on nearshore rip currents

Creator:: Long, Joseph W. and Özkan-Haller, H. Tuba
Abstract:: The rip current field resulting from the transformation of surface gravity waves over offshore submarine canyons is studied. Employing a wave transformation model and a wave-induced circulation model over observed bathymetry we find that wave height variations associated with undulations in the canyon contours cause rip current circulation cells with...
Resource Type:: Article
Full Text:: Joseph W. Long and H. Tuba Özkan-Haller College of Oceanic and Atmospheric Sciences, Oregon State

Ensemble-Based Data Assimilation for Estimation of River Depths

Creator:: Wilson, Greg and Özkan-Haller, H. Tuba
Abstract:: A method is presented for estimating bathymetry in a river, based on observations of depth-averaged velocity during steady flow. The estimator minimizes a cost function that combines known information in the form of a prior estimate and measured data (including measurement noise). State augmentation is used to relate the measured...
Resource Type:: Article
Full Text:: Estimation of River Depths GREG WILSON AND H. TUBA ÖZKAN-HALLER College of Earth, Ocean, and Atmospheric

Formulation of the undertow using linear wave theory

Creator:: Guannel, G. and Özkan-Haller, H. Tuba
Abstract:: The undertow is one of the most important mechanisms for sediment transport in nearshore regions. As such, its formulation has been an active subject of research for at least the past 40 years. Still, much debate persists on the exact nature of the forcing and theoretical expression of this current....
Resource Type:: Article
Full Text:: Formulation of the undertow using linear wave theory Guannel, G., & Özkan-Haller, H. T. (2014). Formulation

Power Calculations for a Passively Tuned Point Absorber Wave Energy Converter on the Oregon Coast

Creator:: Oskamp, Jeffrey A. and Özkan-Haller, H. Tuba
Abstract:: A wave-structure interaction model is implemented, and power output estimates are made for a simplified wave energy converter operating in measured spectral wave conditions. In order to estimate power output from a wave energy converter, device response to hydrodynamic forces is computed using a boundary element method potential flow model....
Resource Type:: Article
Full Text:: Geophysical Research, 104(C4):7649–7666, 1999. [5] T. K. A. Brekken, H. T. Özkan-Haller, and A. Simmons. A

Recognizing diverse forms of impact

Creator:: Özkan-Haller, Tuba
Abstract:: This presentation will share thoughts on recognizing diverse forms of impact by faculty.
Resource Type:: Video

The impact of wave energy converter arrays on wave-induced forcing in the surf zone

Creator:: O'Dea, Annika, Haller, Merrick C., and Ozkan-Haller, H. Tuba
Abstract:: An alternative metric for assessing nearshore hydrodynamic impact due to Wave Energy Converter (WEC) arrays is presented that is based on the modeled changes in alongshore radiation stress gradients in the lee of the array. The metric is developed using a previously observed relationship between measured radiation stresses and alongshore...
Resource Type:: Article
Full Text:: . Haller a, H. Tuba €Ozkan-Haller b a School of Civil & Construction Engineering, Oregon State University

An Inner-Shelf Wave Forecasting System for the U.S. Pacific Northwest

Creator:: Garcia-Medina, Gabriel, Özkan-Haller, H. Tuba, Ruggiero, Peter, and Oskamp, Jeffrey
Abstract:: An operational inner-shelf wave forecasting system was implemented for the Oregon and southwest Washington coast in the U.S. Pacific Northwest (PNW). High-resolution wave forecasts are useful for navigational planning, identifying wave energy resources, providing information for site-specific coastal flood models, and having an informed recreational beach user group, among other...
Resource Type:: Article
Full Text:: , Oregon State University, Corvallis, Oregon H. TUBA €OZKAN-HALLER AND PETER RUGGIERO College of Earth

Microelectrode Velocity Effects and Aquatic Eddy Covariance Measurements under Waves

Creator:: Reimers, Clare E., Özkan-Haller, H. Tuba, Albright, Andrea T., and Berg, Peter
Abstract:: Interest in validating the eddy covariance (EC) technique under wave-induced flows led to a series of experiments in a 104-m-long large wave flume (LWF) using an acoustic Doppler velocimeter (ADV) and two oxygen microelectrodes (tips ~2 mm apart) mounted on a sturdy tripod. Four additional ADVs positioned within the flume...
Resource Type:: Article
Full Text:: Aquatic Eddy Covariance Measurements under Waves CLARE E. REIMERS, H. TUBA ÖZKAN-HALLER, AND ANDREA T

Nearshore Wind-Wave Forecasting at the Oregon Coast

Creator:: Garcia, Gabriel, Özkan-Haller, H. Tuba, and Ruggiero, Peter
Abstract:: This presentation was given as part of Oregon State University's College of Oceanographic and Atmospheric Sciences graduate student seminar series. It describes the basics of wave forecasting and then focuses on work implementing a wave forecasting system for the Oregon and Southwestern Washington Coast.
Resource Type:: Presentation
Full Text:: the Oregon Coast Gabriel García, H. Tuba Özkan-Haller, Peter Ruggiero November 16, 2011 Wave

Quantifying the length-scale dependence of surf zone advection

Creator:: Wilson, Greg W., Özkan-Haller, H. Tuba, and Holman, Robert A.
Abstract:: We investigate the momentum balance in the surf zone, in a setting which is weakly varying in the alongshore direction. Our focus is on the role of nonlinear advective terms. Using numerical experiments, we find that advection tends to counteract alongshore variations in momentum flux, resulting in more uniform kinematics....
Resource Type:: Article
Full Text:: dependence of surf zone advection Greg W. Wilson,1 H. Tuba €Ozkan-Haller,1 and Robert A. Holman1 Received

Mechanistic analysis of the wave-current interaction in the plume region of a partially mixed tidal inlet

Creator:: Moghimi, Saeed, Özkan-Haller, H. Tuba, Akan, Cigdem, and Jurisa, Joseph T.
Abstract:: In this research, a three-dimensional coupled wave-circulation model, including meteorological forcing, freshwater inflow and time varying open boundary conditions, for New River Inlet is validated. A mechanistic approach is taken to investigate how various wave-current interaction mechanisms affect the nearshore circulation, plume expansion and surface wave field in the plume...
Resource Type:: Article
Full Text:: the plume region of a partially mixed tidal inlet. Saeed Moghimia,b,∗, Tuba Ozkan-Hallerc, Cigdem

Data assimilation and bathymetric inversion in a two‐dimensional horizontal surf zone model

Creator:: Wilson, G. W., Özkan-Haller, H. Tuba, and Holman, R. A.
Abstract:: A methodology is described for assimilating observations in a steady state twodimensional horizontal (2‐DH) model of nearshore hydrodynamics (waves and currents), using an ensemble‐based statistical estimator. In this application, we treat bathymetry as a model parameter, which is subject to a specified prior uncertainty. The statistical estimator uses state augmentation...
Resource Type:: Article
Full Text:: inversion in a two‐dimensional horizontal surf zone model G. W. Wilson,1 H. T. Özkan‐Haller,1 and R. A

Data for Runups of unusual size: rogueness and variability of swash

Creator:: Garcia Medina, Gabriel, Ozkan-Haller, H. Tuba, Ruggiero, Peter, Holman, Robert A., and Li, Chuan
Abstract:: This repository item contains the files needed to reproduce the results reported in the published work entitled "Runups of unusual size: rogueness and variability of swash" in the Journal of Geophysical Research. As described in the publication, the results described within it pertain to simulations of wave runup for various...
Resource Type:: Dataset

Bathymetry Estimation Using Drifter-Based Velocity Measurements on the Kootenai River, Idaho

Creator:: Landon, Kyle C., Wilson, Greg W., Özkan-Haller, H. Tuba, and MacMahan, Jamie H.
Abstract:: Velocity measurements from drifter GPS records are used in an ensemble-based data assimilation technique to extract the river bathymetry. The method is tested on a deep meandering reach and a shallow braided reach of the Kootenai River in Idaho. The Regional Ocean Modeling System (ROMS) is used to model numerous...
Resource Type:: Article
Full Text:: the Kootenai River, Idaho Landon, Kyle C., Greg W. Wilson, H. Tuba Özkan-Haller, Jamie H. MacMahan

Surf zone bathymetry and circulation predictions via data assimilation of remote sensing observations

Creator:: Wilson, G. W., Özkan-Haller, H. Tuba, Holman, R. A., Haller, M. C., Honegger, D. A., and Chickadel, C. C.
Abstract:: Bathymetry is a major factor in determining nearshore and surf zone wave transformation and currents, yet is often poorly known. This can lead to inaccuracy in numerical model predictions. Here bathymetry is estimated as an uncertain parameter in a data assimilation system, using the ensemble Kalman filter (EnKF). The system...
Resource Type:: Article
Full Text:: predictions via data assimilation of remote sensing observations Wilson, G. W., H. T. Özkan-Haller, R. A

Laboratory Observation of Waves in the Vicinity of WEC-Arrays

Creator:: Haller, Merrick C., Porter, Aaron, Lenee-Bluhm, Pukha, Rhinefrank, Ken, Hammagren, Erik, Özkan-Haller, H. Tuba, and Newborn, David
Abstract:: This paper was presented at the 9th European Wave and Tidal Energy Conference held in Southampton, UK September 4-11, 2011.
Resource Type:: Technical Report
Full Text:: , Ken Rhinefrank*, Erik Hammagren*, Tuba Özkan-Haller+3, David Newborn# #School of Civil

Technical note: Time lag correction of aquatic eddy covariance data measured in the presence of waves

Creator:: Berg, P., Reimers, Clare E., Rosman, J. H., Huettel, M., Delgard, M. L., Reidenbach, M. A., and Özkan-Haller, H. Tuba
Abstract:: Extracting benthic oxygen fluxes from eddy covariance time series measured in the presence of surface gravity waves requires careful consideration of the temporal alignment of the vertical velocity and the oxygen concentration. Using a model based on linear wave theory and measured eddy covariance data, we show that a substantial...
Resource Type:: Article
Full Text:: ., Delgard, M. L., Reidenbach, M. A., & Özkan-Haller, H. T. (2015). Technical note: Time lag correction of

Technical note: Time lag correction of aquatic eddy covariance data measured in the presence of waves

Creator:: Berg, P., Reimers, Clare E., Rosman, J. H., Huettel, M., Delgard, M. L., Reidenbach, M. A., and Özkan-Haller, H. Tuba
Abstract:: Extracting benthic oxygen fluxes from eddy covariance time series measured in the presence of surface gravity waves requires careful consideration of the temporal alignment of the vertical velocity and the oxygen concentration. Using a model based on linear wave theory and measured eddy covariance data, we show that a substantial...
Resource Type:: Article
Full Text:: ., Delgard, M. L., Reidenbach, M. A., & Özkan-Haller, H. T. (2015). Technical note: Time lag correction of

Benthic oxygen consumption rates during hypoxic conditions on the Oregon continental shelf: Evaluation of the eddy correlation method

Creator:: Reimers, Clare E., Özkan-Haller, H. Tuba, Berg, Peter, Devol, Allan, McCann-Grosvenor, Kristina, and Sanders, Rhea D.
Abstract:: Three stations, at ∼80 m water depth on the Oregon shelf between 44.7°N and 43.9 N, were studied under hypoxic conditions in late spring and summer of 2009 to determine benthic oxygen consumption rates. Oxygen fluxes were derived from eddy correlation (EC) measurements made from an autonomous lander deployed for...
Resource Type:: Article
Full Text:: Clare E. Reimers,1 H. Tuba Özkan-Haller,1 Peter Berg,2 Allan Devol,3 Kristina McCann-Grosvenor,1 and

Benthic oxygen consumption rates during hypoxic conditions on the Oregon continental shelf: Evaluation of the eddy correlation method

Creator:: Reimers, Clare E., Özkan-Haller, H. Tuba, Berg, Peter, Devol, Allan, McCann-Grosvenor, Kristina, and Sanders, Rhea D.
Abstract:: Three stations, at similar to ~80 m water depth on the Oregon shelf between 44.7 degrees N and 43.9 N, were studied under hypoxic conditions in late spring and summer of 2009 to determine benthic oxygen consumption rates. Oxygen fluxes were derived from eddy correlation (EC) measurements made from an...
Resource Type:: Article
Full Text:: Clare E. Reimers,1 H. Tuba Özkan-Haller,1 Peter Berg,2 Allan Devol,3 Kristina McCann-Grosvenor,1 and

Wave Energy Converter Modeling in the Frequency Domain : A Design Guide

Creator:: Bosma, Bret, Zhang, Zhe, Brekken, Ted K. A., Özkan-Haller, H. Tuba, McNatt, Cameron, and Yim, Solomon C.
Abstract:: Wave energy converter research continues to advance and new developers are continuing to emerge, leading to the need for a general modeling methodology. This work attempts to outline the design methodology necessary to perform frequency domain analysis on a generic wave energy converter. A two-body point absorber representing a generic...
Resource Type:: Conference Proceeding
Full Text:: : A Design Guide Bret Bosma, Zhe Zhang, Ted K.A. Brekken, H. Tuba Özkan-Haller, Cameron McNatt

Sediment-Transport-Study-Phase-1-Version 1.pdf

Creator:: Özkan-Haller, H. Tuba, Allan, Jonathan C., Barth, Jack A., Haller, Merrick C., Holman, Rob A., Ruggiero, Peter, Oregon State University, and Oregon Department of Geology and Mineral Industries
Abstract:: This project was carried out collaboratively by Oregon State University (OSU) and the Oregon Department of Geology and Mineral Industries (DOGAMI) and involved baseline observations and modeling at the proposed wave energy conversion (WEC) array site near Reedsport, OR. In particular, observations and predictions of the wave conditions at the...
Full Text:: Site______________________________ 24 Appendix D Wave Modeling Results H. Tuba Ozkan-Haller Oregon State University

Sediment-Transport-Study-Phase-1-Version-2.pdf

Creator:: Özkan-Haller, H. Tuba, Allan, Jonathan C., Barth, Jack A., Haller, Merrick C., Holman, Rob A., Ruggiero, Peter, Oregon State University, and Oregon Department of Geology and Mineral Industries
Abstract:: This project was carried out collaboratively by Oregon State University (OSU) and the Oregon Department of Geology and Mineral Industries (DOGAMI) and involved baseline observations and modeling at the proposed wave energy conversion (WEC) array site near Reedsport, OR. In particular, observations and predictions of the wave conditions at the...
Full Text:: Appendix D: Wave Modeling Results By H. Tuba Özkan-Haller, Oregon State University Background

Sediment Transport Study: Baseline observations and modeling for the Reedsport wave energy site

Creator:: Özkan-Haller, H. Tuba, Allan, Jonathan C., Barth, Jack A., Haller, Merrick C., Holman, Rob A., Ruggiero, Peter, Oregon State University, and Oregon Department of Geology and Mineral Industries
Abstract:: This project was carried out collaboratively by Oregon State University (OSU) and the Oregon Department of Geology and Mineral Industries (DOGAMI) and involved baseline observations and modeling at the proposed wave energy conversion (WEC) array site near Reedsport, OR. In particular, observations and predictions of the wave conditions at the...
Resource Type:: Technical Report

PTIE Findings: Expanding Promotion and Tenure Guidelines to Inclusively Recognize Innovation and Entrepreneurial Impact

Creator:: Carter, Rich G.
Abstract:: Funded through a grant from the National Science Foundation (Award # CNS-1936073), Oregon State University has led a nationwide effort to identify best practices for the inclusive recognition of innovation† & entrepreneurship (I&E) impact within promotion and tenure (P&T) guidelines. The grant PI for this effort is Rich G. Carter....
Resource Type:: Conference Proceeding
Full Text:: Özkan-Haller and Irem Tumer. Additional organizing committee members are Julie Risien and Brian Wall

Remote sensing of wave roller lengths in the laboratory

Creator:: Haller, Merrick C. and Catalán, P. A.
Abstract:: The optical intensity signals from surf zone waves in a laboratory flume are analyzed using several different phase‐averaging techniques, and a methodology is developed for estimating wave roller lengths and local wave dissipation. The intensity signals (i.e., phase‐averaged intensity profiles) of individual breaking waves are compared with the wave profiles...
Resource Type:: Article
Full Text:: flume as shown by Haller and Özkan Haller [2007]. Those previous results showed that the standing wave

Sediment Transport Study: Phase Two: Baseline Observations and Characterization of Sediment Transport Processes for the Reedsport Wave Energy Site

Creator:: Ruggiero, Peter, Holman, Robert A., and Allen, Jonathan C.
Abstract:: This project was carried out collaboratively by Oregon State University (OSU) and the Oregon Department of Geology and Mineral Industries (DOGAMI) and involved continuation of the beach monitoring program begun in summer 2009 to determine baseline conditions and beach variability at the site of the planned Reedsport wave energy conversion...
Resource Type:: Technical Report
Full Text:: for the Reedsport Wave Energy Site’ by Ozkan-‐Haller et al. Core

Experimental study of nearshore dynamics on a barred beach with rip channels

Creator:: Haller, Merrick C., Dalrymple, Robert A., and Svendsen, Ib A.
Abstract:: Wave and current measurements are presented from a set of laboratory experiments performed on a fixed barred beach with periodically spaced rip channels using a range of incident wave conditions. The data demonstrate that the presence of gaps in otherwise longshore uniform bars dominates the nearshore circulation system for the...
Resource Type:: Article
Full Text:: ) are shown for completeness; h is the total water depth including wave setup. 14 - 8 HALLER ET AL

Rip current instabilities

Creator:: Haller, Merrick C. and Dalrymple, Robert A.
Abstract:: A laboratory experiment involving rip currents generated on a barred beach with periodic rip channels indicates that rip currents contain energetic low-frequency oscillations in the presence of steady wave forcing. An analytic model for the time-averaged flow in a rip current is presented and its linear stability characteristics are investigated...
Resource Type:: Article
Full Text:: + v ∂ ∂y )( Uy − Vx h ) = − 1 h ∇h × ∆M + b0 h0 [ −1 h ∇h × ∆T ] , (3.11) 172 M. C. Haller

Investigations on the harvesting and handling of Bosc pears from the Rogue River Valley

Creator:: Oregon Agricultural College. Experiment Station, Hartman, Henry, 1889-, Magness, J. R. (John Robert), 1894-, Reimer, F. C. (Frank Charles), 1881-, and Haller, M. H.
Abstract:: Published July 1927. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: HENRY HARTMAN, j. R. MAGNESS, F. C. REIMER, M. H. HALLER CORVALLIS, OREGON The regular bulletins of

Quasi-three-dimensional modeling of rip current systems

Creator:: Haas, Kevin A., Svendsen, I. A., Haller, Merrick C., and Zhao, Qun
Abstract:: The focus of the paper is the analysis of the flow in rip current systems generated by channels in longshore bars on a beach. The horizontal variations of rip current systems are described through the use of the quasi-three-dimensional nearshore circulation model SHORECIRC. Model predictions are compared to laboratory measurements...
Resource Type:: Article
Full Text:: systems Kevin A. Haas,1 I. A. Svendsen,2 Merrick C. Haller,3 and Qun Zhao2 Received 21 February 2002

Microwave backscattering from surf zone waves

Creator:: Catalán, Patricio A., Haller, Merrick C., and Plant, William J.
Abstract:: The microwave backscatter properties of surf zone waves are analyzed using field observations. By utilizing a preexisting, independent, water surface discrimination technique, the microwave returns were extracted along individual waveforms and the data from shoaling (steepening) waves, surf zone breaking waves, and remnant foam were separated and quantified. In addition,...
Resource Type:: Article
Full Text:: backscattering from surf zone waves Catalán, P. A., M. C. Haller, and W. J. Plant. (2014). Microwave

Ocean wavenumber estimation from wave-resolving time series imagery

Creator:: Plant, Nathaniel G., Holland, K. Todd, and Haller, Merrick C.
Abstract:: We review several approaches that have been used to estimate ocean surface gravity wavenumbers from wave-resolving remotely sensed image sequences. Two fundamentally different approaches that utilize these data exist. A power spectral density approach identifies wavenumbers where image intensity variance is maximized. Alternatively, a cross-spectral correlation approach identifies wavenumbers where...
Resource Type:: Article
Full Text:: G. Plant, K. Todd Holland, and Merrick C. Haller Abstract—We review several approaches that have

Optical and Microwave Detection of Wave Breaking in the Surf Zone

Creator:: Catalán, Patricio A., Haller, Merrick C., Holman, Robert A., and Plant, William J.
Abstract:: Synchronous and colocated optical and microwave signals from waves in the surf zone are presented and analyzed. The field data were collected using a high-resolution video system and a calibrated horizontally polarized marine radar during the decaying phase of a storm. The resulting changes in the received signals from varying...
Resource Type:: Article
Full Text:: Patricio A. Catalán, Merrick C. Haller, Robert A. Holman, and William J. Plant, Member, IEEE Abstract

Boussinesq modeling of a rip current system

Creator:: Chen, Qin, Dalrymple, Robert A., Kirby, James T., Kennedy, Andrew B., and Haller, Merrick C.
Abstract:: In this study, we use a time domain numerical model based on the fully nonlinear extended Boussinesq equations [Wei et al., 1995] to investigate surface wave transformation and breaking-induced nearshore circulation. The energy dissipation due to wave breaking is modeled by introducing an eddy viscosity term into the momentum equations,...
Resource Type:: Article
Full Text:: current system Qin Chen, Robert A. Dalrymple, James T. Kirby, Andrew B. Kennedy, and Merrick C. Haller

Radar Remote Sensing Estimates of Waves and Wave Forcing at a Tidal Inlet

Creator:: Díaz Méndez, Guillermo M., Haller, Merrick C., Raubenheimer, Britt, Elgar, Steve, and Honegger, David A.
Abstract:: The time and space variability of wave transformation through a tidal inlet is investigated with radar remote sensing. The frequency of wave breaking and the net wave breaking dissipation at high spatial resolution is estimated using image sequences acquired with a land-based X-band marine radar. Using the radar intensity data,...
Resource Type:: Article
Full Text:: Díaz Méndez, G. M., Haller, M. C., Raubenheimer, B., Elgar, S., & Honegger, D. A. (2015). Radar Remote

proceedings_appendix-3.pdf

Creator:: Institute for Natural Resources
Abstract:: In recent years, depletion of sands in the nearshore environment along the northern Oregon and southwest Washington coasts has been documented. This erosion raises concerns about protection of economic and ecological resources in the area. The Columbia River Nearshore Beneficial Use Project was initiated to engage public and private sector...
Full Text:: Presentations • Sediment Migration & Wave/Current Patterns Dan Cox and Tuba Ozkan‐Haller, Oregon State

proceedings_appendix-2.pdf

Creator:: Institute for Natural Resources
Abstract:: In recent years, depletion of sands in the nearshore environment along the northern Oregon and southwest Washington coasts has been documented. This erosion raises concerns about protection of economic and ecological resources in the area. The Columbia River Nearshore Beneficial Use Project was initiated to engage public and private sector...
Full Text:: ‐Shay, Northwest Research Associates • Phil Osborne, Pacific International Engineering • Tuba Ozkan

Anchor-last deployment procedure for mooring

Creator:: Thresher, Robert W. and Nath, John H.
Abstract:: The anchor-last mooring procedure is investigated in order to determine the transient forces in the mooring line and the velocities of the anchor. Transient forces were determined and the results showed that no severe snap loads occurred for the cases investigated. In addition, it was found that the vertical velocity...
Resource Type:: Technical Report
Full Text:: rrr It Anchor-last Deployment Procedure for Mooring by Robert W. Thresher and John H. Nath SCHOOL

proceedings_appendix-1.pdf

Creator:: Institute for Natural Resources
Abstract:: In recent years, depletion of sands in the nearshore environment along the northern Oregon and southwest Washington coasts has been documented. This erosion raises concerns about protection of economic and ecological resources in the area. The Columbia River Nearshore Beneficial Use Project was initiated to engage public and private sector...
Full Text:: Tuba Ozkan‐Haller, Oregon State University 9:45‐10:15 Q&A / Discussion 10:15‐10:30 Break 10

The Marketization of Religion: Field, Capital, and Consumer Identity

Creator:: McAlexander, James H., Dufault, Beth Leavenworth, Martin, Diane M., and Schouten, John W.
Abstract:: Certain institutions traditionally have had broad socializing influence over their members, providing templates for identity that comprehend all aspects of life from the existential and moral to the mundanely material. Marketization and detraditionalization undermine that socializing role. This study examines the consequences when, for some members, such an institution loses...
Resource Type:: Article
Full Text:: Identity The Marketization of Religion: Field, Capital, and Consumer Identity McAlexander, J. H

Procedure for secondary bleaching brined cherries with sodium chlorite

Creator:: Oregon State University. Agricultural Experiment Station, Beavers, Darrell V., Payne, Carl H., and Milleville, Howard P.
Abstract:: Published October 1970. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: , Carl H. Payne, and Howard P. Milleville0 Bleaching to a uniform white The problem of non-unif ormly

Development of the Global Earthquake Model's neotectonic fault database

Creator:: Christophersen, Annemarie, Litchfield, Nicola, Berryman, Kelvin, Yeats, Robert, Thomas, Richard, Basili, Roberto, Wallace, Laura, Ries, William, Hayes, Gavin P., Haller, Kathleen M., Yoshioka, Toshikazu, Koehler, Richard D., Clark, Dan, Wolfson-Schwehr, Monica, Boettcher, Margaret S., Villamor, Pilar, Horspool, Nick, Ornthammarath, Teraphan, Zuniga, Ramon, Langridge, Robert M., Stirling, Mark W., Goded, Tatiana, Costa, Carlos, and Yeats, Robert
Abstract:: The Global Earthquake Model (GEM) aims to develop uniform, openly available, standards, datasets and tools for worldwide seismic risk assessment through global collaboration, transparent communication and adapting state-of-the-art science. GEM Faulted Earth (GFE) is one of GEM’s global hazard module projects. This paper describes GFE’s development of a modern neotectonic...
Resource Type:: Article
Full Text:: western hemisphere (Haller et al. 1993; Costa et al. 2006; Yeats and Prentice 1996; Pantosti et al. 2003

Effects of long-term fertilizer and management practices on growth and yield of pears grown in a clay adobe soil

Creator:: Westwood, Melvin N. (Melvin Neil), 1923-, Degman, E. S. (Elliott Sanford), 1906-, and Grim, J. H.
Abstract:: Published December 1964. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: Station (presently Horticulturist, Tree Fruit Experi- ment Station, Wenatchee, Washington); J. H. Grim is

NNMREC Accomplishments and Impacts 2009-2013

Creator:: Batten, Belinda and Polagye, Brian L.
Abstract:: In 2008, the US Department of Energy’s (DOE) Wind and Water Power Program issued a funding opportunity announcement to establish university-‐led National Marine Renewable Energy Centers. Oregon State University and the University of Washington combined their capabilities in wave and tidal energy to establish the Northwest National Marine Renewable Energy...
Resource Type:: Technical Report
Full Text:: Tuba Ozkan-‐ Haller Oceanography, OSU Wave Resource Characterization; Scaled

Wave Energy Converter Modeling in the Time Domain: A Design Guide

Creator:: Bosma, Bret
Abstract:: As the ocean wave energy field continues to mature, developers need a generic modeling methodology to test their designs before building prototypes. A design methodology for a first-pass time-domain simulation is a goal of this work. Built on results from the frequency domain analysis, the general procedure for obtaining time...
Resource Type:: Technical Report
Full Text:: . Brekken, H. Tuba Özkan-Haller, Solomon C. Yim Oregon State University Corvallis, OR USA Abstract

Oregon State Forester ; Vol. 29, No. 1 (January 1987)

Creator:: OSC Oregon Forestry Alumni Association
Abstract:: Magazine of OSC Oregon Forestry Alumni Association.
Resource Type:: Other
Full Text:: 97824 ADVISORY MEMBERS Carl H. Stoltenberg, Dean, College of Forestry John H. Beuter, Associate

Enhanced Direct Major Histocompatibility Complex Class I Self-Antigen Presentation Induced by Chlamydia Infection

Creator:: Cram, Erik D., Simmons, Ryan S., Palmer, Amy L., Hildebrand, William H., Rockey, Daniel D., and Dolan, Brian P.
Abstract:: The direct major histocompatibility complex (MHC) class I antigen presentation pathway ensures intracellular peptides are displayed at the cellular surface for recognition of infected or transformed cells by CD8⁺ cytotoxic T lymphocytes. Chlamydia spp. are obligate intracellular bacteria and, as such, should be targeted by CD8⁺ T cells. It is...
Resource Type:: Article
Full Text:: . S., Palmer, A. L., Hildebrand, W. H., Rockey, D.D., & Dolan, B. P. (2016). Enhanced direct major

Gender Pluralism in Problem-Solving Software

Creator:: Burnett, Margaret M., Beckwith, Laura, Wiedenbeck, Susan, Fleming, Scott D., Cao, Jill, Park, Thomas H., Grigoreanu, Valentina, and Rector, Kyle
Abstract:: Although there has been significant research into gender regarding educational and workplace practices, there has been little awareness of gender differences as they pertain to software tools, such as spreadsheet applications, that try to support end users in problem-solving tasks. Although such software tools are intended to be gender agnostic,...
Resource Type:: Article
Full Text:: . Fleminga, Jill Caoa, Thomas H. Parkb, Valentina Grigoreanua,d, Kyle Rectora,e aOregon State University

Welcome to 2022 PTIE Conference [transcript]

Creator:: Carter, Rich G.
Abstract:: Abstract and transcript.
Resource Type:: Conference Proceeding
Full Text:: of Earth, Ocean, Atmospheric Sciences at Oregon State University – Dr. Tuba Ozkan-Haller) will

Waves, WEC, and Arrays

Creator:: McNatt, Cameron
Abstract:: This presentation was given as part of Oregon State University's College of Oceanographic and Atmospheric Sciences graduate student seminar series. It is critical to understand waves dynamics in order to design wave energy convertors and then deploy them in arrays. Modelling suggests that array interactions lead to constructive and destructive...
Resource Type:: Presentation
Full Text:: , Portugal Haller, M. C., A. Porter, P. Lenee-Bluhm, K. Rhinefrank, E. Hammagren, H. T. Ozkan-Haller, & D

Seasonal variation of photosynthetic model parameters and leaf area index from global Fluxnet eddy covariance data

Creator:: Groenendijk, M., Dolman, A. J., Ammann, C., Arneth, A., Cescatti, A., Dragoni, D., Gash, J. H. C., Gianelle, D., Gioli, B., Kiely, G., Knohl, A., Law, B. E., Lund, M., Marcolla, B., van der Molen, M. K., Montagnani, L., Moors, E., Richardson, A. D., Roupsard, O., Verbeeck, H., and Wohlfahrt, G.
Abstract:: Global vegetation models require the photosynthetic parameters, maximum carboxylation capacity (V[subscript cm]), and quantum yield (alpha) to parameterize their plant functional types (PFTs). The purpose of this work is to determine how much the scaling of the parameters from leaf to ecosystem level through a seasonally varying leaf area index...
Resource Type:: Article
Full Text:: . Dolman,1 C. Ammann,3 A. Arneth,4,5 A. Cescatti,6 D. Dragoni,7 J. H. C. Gash,1 D. Gianelle,8 B. Gioli,9 G

Long-Term Time-Dependent Probabilities for the Third Uniform California Earthquake Rupture Forecast (UCERF3)

Creator:: Field, Edward H., Biasi, Glenn P., Bird, Peter, Madden, Christopher, Dawson, Timothy E., Felzer, Karen R., Jackson, David D., Johnson, Kaj M., Jordan, Thomas H., Michael, Andrew J., Milner, Kevin R., Page, Morgan T., Parsons, Tom, Powers, Peter M., Shaw, Bruce E., Thatcher, Wayne R., Weldon, Ray J., II, and Zeng, Yuehua
Abstract:: The 2014 Working Group on California Earthquake Probabilities (WGCEP 2014) presents time-dependent earthquake probabilities for the third Uniform California Earthquake Rupture Forecast (UCERF3). Building on the UCERF3 time-independent model published previously, renewal models are utilized to represent elastic-rebound-implied probabilities. A new methodology has been developed that solves applicability issues in...
Resource Type:: Article
Full Text:: Uniform California Earthquake Rupture Forecast (UCERF3) Field, E. H., Biasi, G. P., Bird, P., Dawson, T

Photohydrogen production from dark-fermented palm oil mill effluent (DPOME) and statistical optimization: Renewable substrate for hydrogen

Creator:: Mishra, Puranjan, Singh, Lakhveer, Ab Wahid, Zularisam, Krishnan, Santhana, Rana, Supriyanka, Islam, M. Amirul, Sakinah, Mimi, Ameen, Fuad, and Syed, A.
Abstract:: Biological hydrogen production through photo-fermentative process using dark fermented palm oil effluent (DPOME) is a cost effective and environmentally benign process. In this study, effect of various factors like light intensity, agitation rate and dilution of DPOME on the hydrogen productivity of Rhodopseudomanas palustris were investigated using batch system. Investigation...
Resource Type:: Article
Full Text:: . Inoculum was activated anaerobically in modified basal medium (Asada et al., 2006) at 30 �C for 72 h under

Forcing a three-dimensional, hydrostatic, primitive-equation model for application in the surf zone : 1. formulation

Creator:: Newberger, P. A. and Allen, John S.
Abstract:: An Eulerian analysis for wave forcing of three-dimensional (3D) wave-averaged mean circulation in the surf zone is presented. The objective is to develop a dynamically consistent formulation for applications in a 3D primitive equation model. The analysis is carried out for the case of shallow-water linear waves interacting with wave-averaged...
Resource Type:: Article
Full Text:: Program under grant N00014-02-1-0100. We thank Jerome Smith and Tuba Özkan-Haller and the other NOPP

Uniform California Earthquake Rupture Forecast, Version 3 (UCERF3) —The Time-Independent Model

Creator:: Field, Edward H., Arrowsmith, Ramon J., Biasi, Glenn P., Bird, Peter, Dawson, Timothy E., Felzer, Karen R., Jackson, David D., Johnson, Kaj M., Jordan, Thomas H., Madden, Christopher, Michael, Andrew J., Milner, Kevin R., Page, Morgan T., Parsons, Tom, Powers, Peter M., Shaw, Bruce E., Thatcher, Wayne R., Weldon, Ray J., II, and Zeng, Yuehua
Abstract:: The 2014 Working Group on California Earthquake Probabilities (WGCEP14) present the time-independent component of the Uniform California Earthquake Rupture Forecast, Version 3 (UCERF3), which provides authoritative estimates of the magnitude, location, and time-averaged frequency of potentially damaging earthquakes in California. The primary achievements have been to relax fault segmentation and...
Resource Type:: Article
Full Text:: ) —The Time-Independent Model Field, E. H., Arrowsmith, R. J., Biasi, G. P., Bird, P., Dawson, T. E

Wave Energy Utility Integration: Advanced Resource Characterization and Integration Costs and Issues

Creator:: Klure, J., Dragoon, K., King, Jeff, Reikard, Gordon, Pacific Energy Ventures, and Ecofys
Abstract:: Pacific Energy Ventures has partnered with utility industry and variable energy resource characterization experts, Ken Dragoon (Ecofys), Jeff King and Gordon Reikard to provide the Oregon Wave Energy Trust (OWET) a comprehensive analysis aimed at further validating wave energy as an economical and viable part of the Northwest’s energy portfolio....
Resource Type:: Technical Report
Full Text:: difficult or less precise — likely, both. Special gratitude to Dr. Tuba Özkan-Haller, Dr. Ted Brekken

Assessing and Addressing Information Needs of Stakeholders Involved in Wave Energy Development and Marine Spatial Planning

Creator:: Sherman, Kate, Henkel, Sarah, and Webster, Janet
Abstract:: This project examined the information needs of those interested in the planning for marine renewable energy in Oregon. The objective was to recommend to Oregon State University’s Northwest National Marine Renewable Energy Center (NNMREC) an approach to facilitating sharing of relevant information concerning marine renewable energy in Oregon and Washington....
Resource Type:: Technical Report
Full Text:: ! !! !! D1$%(#$E(%FG)2$.%,1,! A5! 5C9! !! !! H%$.'?,!I!H'?%0,! 77! 879! !! !! J)=%!'*!H#(12%!+%2%K#30%!:2

Focus on forestry ; vol. 3, no. 3 (Fall 1990)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the College of Forestry, Oregon State University.
Resource Type:: Other
Full Text:: organizations that h ave helpe make the College of Forestry a very special place to learn, teach, and conduct

2004-2005 Annual Report

Creator:: Institute for Natural Resources
Abstract:: 2004-2005 INR Annual Report
Resource Type:: Other
Full Text:: were Oregon State University researchers Dan Cox, Tuba Ozkan-Haller and Professor Emeritus

Inclusively Recognizing Faculty Innovation and Entrepreneurship Impact Within Promotion and Tenure Considerations

Creator:: Bouwma-Gearhart, Jana, Lenhart, Cindy, Carter, Rich, Mundorff, Karl, Cho, Holly, and Knoch, Jessica
Abstract:: Faculty research has led to a plethora of innovations and entrepreneurial resources (I&E), allowing for enhancements to the greater social good including, but not limited to, technological and economic advancements. Faculty I&E also enhances faculty competitiveness for funding, institutional image and fundraising, and supports students’ workforce preparation. Over time institutions...
Resource Type:: Preprint
Full Text:: State University) and Tuba Ozkan-Haller (Oregon State University) for their overall support of this

Forcing a three-dimensional, hydrostatic, primitive-equation model for application in the surf zone : 2. application to DUCK94

Creator:: Newberger, P. A. and Allen, John S.
Abstract:: A three‐dimensional primitive‐equation model for application to the nearshore surf zone has been developed. This model, an extension of the Princeton Ocean Model (POM), predicts the wave‐averaged circulation forced by breaking waves. All of the features of the original POM are retained in the extended model so that applications can...
Resource Type:: Article
Full Text:: ., Slinn et al., 1998; Özkan and Kirby, 1999; Özkan-Haller and Li, 2003; Reniers et al., 2004] or quasi

Proceedings of the Oregon Marine Renewable Energy Environmental Sciences Conference

Creator:: Boehlert, George W., Braby, Caren, Bull, Ann Scarborough, Helix, Mary Elaine, Henkel, Sarah, Klarin, Paul, and Schroeder, Donna
Abstract:: Development of wave and offshore wind-based marine renewable energy is anticipated on the Outer Continental Shelf (OCS) off Oregon and much of the Pacific Northwest in the coming decade. Multiple issues related to environmental considerations and information needs remain for these emerging industries. The Oregon Marine Renewable Energy Environmental Science...
Resource Type:: Conference Proceeding

2023 Summer OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other

columbia_nearshore_project_workshop_proceedings_final.pdf

Creator:: Institute for Natural Resources
Abstract:: In recent years, depletion of sands in the nearshore environment along the northern Oregon and southwest Washington coasts has been documented. This erosion raises concerns about protection of economic and ecological resources in the area. The Columbia River Nearshore Beneficial Use Project was initiated to engage public and private sector...
Full Text:: Özkan‐Haller of Oregon State University gave a presentation about waves, currents, and sediment at the

Application of the implicit particle filter to a model of nearshore circulation

Creator:: Miller, R. N. and Ehret, L. L.
Abstract:: The implicit particle filter is applied to a stochastically forced shallow water model of nearshore flow, and found to produce reliable state estimates with tens of particles. The state vector of this model consists of a height anomaly and two horizontal velocity components at each point on a 128 x...
Resource Type:: Article
Full Text:: of planetary vorticity [see e.g., €Ozkan-Haller and Kirby, 1999; Bowen and Holman, 1989]. In the

Integrated modeling framework to quantify the coastal protection services supplied by vegetation

Creator:: Guannel, Greg, Ruggiero, Peter, Faries, Joe, Arkema, Katie, Pinsky, Malin, Gelfenbaum, Guy, Guerry, Anne, and Kim, Choong-Ki
Abstract:: Vegetation can protect communities by reducing nearshore wave height and altering sediment transport processes. However, quantitative approaches for evaluating the coastal protection services, or benefits, supplied by vegetation to people in a wide range of coastal environments are lacking. To begin to fill this knowledge gap, we propose an integrated...
Resource Type:: Article
Full Text:: UOff ðxÞ that balances the shoreward mass flux of waves [Guannel and €Ozkan- Haller, 2014]: Journal of

PacWave Wave Resource Assessment

Creator:: Dunkle, Gabrielle, Robertson, Bryson, Garcia-Medina, Gabriel, and Yang, Zhaoqing
Abstract:: The Pacific Northwest of the United States is characterized by one of the greatest annual mean wave power resources in the world. As a result, the wave energy resource offshore of Oregon has been characterized, through hindcast models and physical buoy data, throughout the past decade. Over the past 8...
Resource Type:: Technical Report
Full Text:: Technol., vol. 50, no. 4, pp. 59–64, 2008. [2] P. Lenee-Bluhm, R. Paasch, and H. T. Özkan-Haller

A behavior‐oriented dynamic model for sandbar migration and 2DH evolution

Creator:: Splinter, Kristen D., Holman, Robert A., and Plant, Nathaniel G.
Abstract:: A nonlinear model is developed to study the time‐dependent relationship between the alongshore variability of a sandbar, a(t), and alongshore‐averaged sandbar position, xc(t). Sediment transport equations are derived from energetics‐based formulations. A link between this continuous physical representation and a parametric form describing the migration of sandbars of constant shape...
Resource Type:: Article
Full Text:: full description of water depth, h(x, y, t), requires specification of the cross‐shore, x, alongshore

Parameterization of Time-Averaged Suspended Sediment Concentration in the Nearshore

Creator:: Yoon, Hyun-Doug, Cox, Daniel, and Mori, Nobuhito
Abstract:: To quantify the effect of wave breaking turbulence on sediment transport in the nearshore, the vertical distribution of time-averaged suspended sediment concentration (SSC) in the surf zone was parameterized in terms of the turbulent kinetic energy (TKE) at different cross-shore locations, including the bar crest, bar trough, and inner surf...
Resource Type:: Article
Full Text:: .; Özkan-Haller, T. State of Nearshore Processes Research: II; Technical Report NPS-OC-00-001; Naval

Ecological-Effects-Workshop-Version 2.pdf

Creator:: Boehlert, George W., McMurray, Gregory R, and Tortorici, C. E.
Full Text:: global warming. Norton and Company, New York. Michel, J., H. Dunagan, C. Boring, E. Healy, W. Evans

Ecological-Effects-Workshop-Version 1.pdf

Creator:: Boehlert, George W., McMurray, Gregory R, and Tortorici, C. E.
Full Text:: global warming. Norton and Company, New York. Michel, J., H. Dunagan, C. Boring, E. Healy, W. Evans

2011/2012 Annual Report

Creator:: Hatfield Marine Science Center
Abstract:: Report year ends June 30.
Resource Type:: Other

Baseline Characterization and Monitoring of the OSU Mobile Ocean Test Berth Site: Benthic Habitat Characteristics and Organisms on the Central Oregon Coast

Creator:: Henkel, Sarah and Northwest National Marine Renewable Energy Center
Abstract:: This project was carried out collaboratively by Oregon State University (OSU) scientists and involved participation by Oregon Department of Fisheries and Wildlife and NOAA Northwest Fisheries Science Center scientists. The goal of this project was baseline characterization via observations and sample collection of the habitat and biological assemblages present at...
Resource Type:: Technical Report
Full Text:: Mate 2008; Özkan-Haller et al. 2009; Terrill et al. 2010) and ongoing work that NNMREC is conducting

2012 Winter OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other
Full Text:: TBA TBA Meyer, H. THESIS 503 015 34509 1 -16 TBA TBA Mueller, C. THESIS 503 016

WagnerClimateSeasonalityLimits.pdf

Creator:: Wagner, Fabien H., Hérault, Bruno, Bonal, Damien, Stahl, Clément, Anderson, Liana O., Baker, Timothy R., Becker, Gabriel Sebastian, Beeckman, Hans, Boanerges Souza, Danilo, Botosso, Paulo Cesar, Bowman, David M. J. S., Bräuning, Achim, Brede, Benjamin, Brown, Foster Irving, Camarero, Jesus Julio, Camargo, Plínio Barbosa, Cardoso, Fernanda C. G., Carvalho, Fabrício Alvim, Castro, Wendeson, Chagas, Rubens Koloski, Chave, Jérome, Chidumayo, Emmanuel N., Clark, Deborah A., Costa, Flavia Regina Capellotto, Couralet, Camille, da Silva Mauricio, Paulo Henrique, Dalitz, Helmut, de Castro, Vinicius Resende, de Freitas Milani, Jaçanan Eloisa, de Oliveira, Edilson Consuelo, de Souza Arruda, Luciano, Devineau, Jean-Louis, Drew, David M., Dünisch, Oliver, Durigan, Giselda, Elifuraha, Elisha, Fedele, Marcio, Ferreira Fedele, Ligia, Figueiredo Filho, Afonso, Finger, César Augusto Guimarães, Franco, Augusto César, Freitas Júnior, João Lima, Galvão, Franklin, Gebrekirstos, Aster, Gliniars, Robert, Graça, Paulo Maurício Lima de Alencastro, Griffiths, Anthony D., Grogan, James, Guan, Kaiyu, Homeier, Jürgen, Kanieski, Maria Raquel, Kho, Lip Khoon, Koenig, Jennifer, Kohler, Sintia Valerio, Krepkowski, Julia, Lemos-Filho, José Pires, Lieberman, Diana, Lieberman, Milton Eugene, Lisi, Claudio Sergio, Longhi Santos, Tomaz, López Ayala, José Luis, Maeda, Eduardo Eijji, Malhi, Yadvinder, Maria, Vivian R. B., Marques, Marcia C. M., Marques, Renato, Maza Chamba, Hector, Mbwambo, Lawrence, Melgaço, Karina Liana Lisboa, Mendivelso, Hooz Angela, Murphy, Brett P., O'Brien, Joseph J., Oberbauer, Steven F., Okada, Naoki, Pélissier, Raphaël, Prior, Lynda D., Roig, Fidel Alejandro, Ross, Michael, Rossatto, Davi Rodrigo, Rossi, Vivien, Rowland, Lucy, Rutishauser, Ervan, Santana, Hellen, Schulze, Mark, Selhorst, Diogo, Silva, Williamar Rodrigues, Silveira, Marcos, Spannl, Susanne, Swaine, Michael D., Toledo, José Julio, Toledo, Marcos Miranda, Toledo, Marisol, Toma, Takeshi, Tomazello Filho, Mario, Valdez Hernández, Juan Ignacio, Verbesselt, Jan, Vieira, Simone Aparecida, Vincent, Grégoire, Volkmer de Castilho, Carolina, Volland, Franziska, Worbes, Martin, Zanon, Magda Lea Bolzan, and Aragão, Luiz E. O. C.
Abstract:: The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combination of seasonal pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measurements and...
Full Text:: seasonality limits leaf carbon assimilation and wood productivity in tropical forests Fabien H. Wagner1

2015 Spring OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other
Full Text:: (Business Administration and Accountancy); Prereqs: ACTG 518 [C] Chen, H. 5 11 -6 0 0 0

2015 Winter OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other
Full Text:: ); Prereqs: ACTG 319 Huang, H. IT AUDITING 420 001 35116 4 MW 1400-1550 1/5/15-3/13/15 F 0730-0920

2014 Winter OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other
Full Text:: ); Major Restrictions: +641 (Accountancy); Prereqs: ACTG 319 Huang, H. IT AUDITING 420 001 35644

2014 Spring OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other
Full Text:: Adkins, L. +Rec 114 006 51651 R 0900-0950 3/31/14-6/6/14 WALD 114A Pynn, H. +Rec

2021 Summer OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other

Seasonal and interannual variation in the extent of hypoxia in the northern California Current from 1998–2012

Creator:: Peterson, Jay O., Morgan, Cheryl A., Peterson, William T., and Di Lorenzo, Emanuele
Abstract:: This study addresses the occurrence, severity, and extent of hypoxia over the continental shelf of the northern California Current (40–48.5°N latitude) from 1998 to 2012. Clear seasonal trends exist in the timing and duration of hypoxia. The highest bottom-water dissolved oxygen concentrations occurred from November to March, and levels below...
Resource Type:: Article
Full Text:: in oceanography. Plenum. REIMERS, C. E., H. T. OZKAN-HALLER, P. BERG, A. DEVOL, K. MCCANN-GROSVENOR

Rip spacing and persistence on an embayed beach

Creator:: Holman, Robert A., Symonds, G., Thornton, E. B., and Ranasinghe, R.
Abstract:: Four years of daily time exposure images from an embayed beach were examined to study the spacing, persistence, and location preferences of rips in a natural rip channel system. A total of 5271 rip channels was observed on 782 days. Occurrence statistics showed no evidence of the preferred location pattern...
Resource Type:: Article
Full Text:: Experienced Investigators and an Objective Statistica ti H 2/cos(q) GS ET RR RH 15 Feb 1996 X X 18 March

2012 Spring OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other

2018 Summer OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other

2019 Summer OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other

2020 Summer OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other

Model Predictive Control of a Nonlinear 2-Body Point Absorber Wave Energy Converter With Estimated State Feedback

Creator:: Amann, Kai Uwe, Magaña, Mario E., and Sawodny, Oliver
Abstract:: Ocean wave energy has the potential to significantly contribute to sustainable power generation in coastal regions. Much of the research effort has gone into developing time domain state space models of point absorber wave energy converters (WECs) and subsequently into model-based optimal control to efficiently harvest the maximum possible amount...
Resource Type:: Article
Full Text:: Machine Theory, vol. 46, pp. 1411-1424, 2011. [4] Oskamp J. A. and Ozkan-Haller, H. T., "Power

2013 Fall OSU Corvallis Campus schedule of classes

Creator:: Oregon State University
Resource Type:: Other
Full Text:: : ACTG 319 Huang, H. STRATEGIC COST MANAGEMENT 422 001 18074 4 MW 1400-1550 9/30/13-12/6/13

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