Index Catalog // ScholarsArchive@OSU

Normal-Mode Instabilities of a Time-Dependent Coastal Upwelling Jet

Creator:: Durski, S. M., Samelson, R. M., and Allen, J. S.
Abstract:: The linear stability of a nearly time-periodic, nonlinear, coastal upwelling–downwelling circulation, over alongshore-uniform topography, driven by a time-periodic wind stress is investigated using numerical methods. The near-periodic alongshore-uniform basic flow is obtained by forcing a primitive equation numerical model of coastal ocean circulation with periodic wind stress. Disturbance growth on...
Resource Type:: Article
Full Text:: Jet S. M. DURSKI, R. M. SAMELSON, J. S. ALLEN, AND G. D. EGBERT College of Oceanic and Atmospheric

Coastal Wind-Driven Circulation in the Vicinity of a Bank. Part II: Modeling Flow over the Heceta Bank Complex on the Oregon Coast

Creator:: Whitney, Michael M. and Allen, J. S.
Abstract:: This study investigates wind-driven circulation in the vicinity of the Heceta Bank complex along the Oregon shelf. Numerical experiments forced with steady winds (0.1 Pa) are conducted; upwelling and downwelling cases are compared. The asymmetric bank bathymetry is the only configurational difference from the symmetric bank runs analyzed in Part...
Resource Type:: Article
Full Text:: at a 100-m interval. 1308 J O U R N A L O F P H Y S I C A L O C E A N O G R A P H Y VOLUME 39

Coastal Wind-Driven Circulation in the Vicinity of a Bank. Part I: Modeling Flow over Idealized Symmetric Banks

Creator:: Whitney, Michael M. and Allen, J. S.
Abstract:: This study examines how coastal banks influence wind-driven circulation along stratified continental shelves. Numerical experiments are conducted for idealized symmetric banks; the standard bank (200 km long and 50 km wide) has dimensions similar to the Heceta Bank complex along the Oregon shelf. Model runs are forced with 10 days...
Resource Type:: Article
Full Text:: hc 5 10 m, u 5 5, and b 5 1. This s-coordinate configuration allows for better resolu- tion near the

Internal‐tide generation and destruction by shoaling internal tides

Creator:: Kelly, S. M. and Nash, J. D.
Abstract:: Internal‐tide generation is usually predicted from local topography, surface tides, and stratification. However, internal tides are often observed to be unrelated to local spring‐neap forcing, appearing intermittently in 3–5 day bursts. Here we suggest a source of this intermittency by illustrating how remotely‐generated shoaling internal tides induce first‐order changes in...
Resource Type:: Article
Full Text:: shoaling internal tides S. M. Kelly1 and J. D. Nash1 Received 22 September 2010; revised 20 October 2010

A Modeling Study of Eulerian and Lagrangian Aspects of Shelf Circulation off Duck, North Carolina

Creator:: Kuebel Cervantes, B. T., Allen, J. S., and Samelson, R. M.
Abstract:: The effects of wind-forced upwelling and downwelling on the continental shelf off Duck, North Carolina, are studied through experiments with a two-dimensional numerical primitive equation model. Moored and shipboard measurements obtained during August–November 1994 as part of the Coastal Ocean Processes (CoOP) Inner Shelf Study (ISS) are used for model–data...
Resource Type:: Article
Full Text:: used in x with a resolution of 250 m and in s with 30 s levels. The horizontal kinematic eddy viscosity

Internal‐tide energy over topography

Creator:: Kelly, S. M., Nash, J. D., and Kunze, E.
Abstract:: The method used to separate surface and internal tides ultimately defines properties such as internal‐tide generation and the depth structure of internal‐tide energy flux. Here, we provide a detailed analysis of several surface‐/internal‐tide decompositions over arbitrary topography. In all decompositions, surface‐tide velocity is expressed as the depth average of total...
Resource Type:: Article
Full Text:: energy over topography S. M. Kelly,1 J. D. Nash,1 and E. Kunze2 Received 6 July 2009; revised 24

Riverine input of macronutrients, iron, and organic matter to the coastal ocean off Oregon, U.S.A., during the winter

Creator:: Wetz, Michael S., Hales, Burke, Chase, Zanna, Wheeler, Patricia A., and Whitney, Michael M.
Abstract:: Three cross‐shelf transects were conducted off northern Oregon in February, 2003, coincident with flooding of Coast Range rivers, to assess the riverine impact on coastal ocean biogeochemistry. During downwelling conditions, low salinity river‐influenced water was located in a narrow band near the coast and contained elevated macronutrient, iron, and organic...
Resource Type:: Article
Full Text:: winter Michael S. Wetz,1 Burke Hales, Zanna Chase, Patricia A. Wheeler, and Michael M. Whitney 2 College

Cross-shore transport variability in the California Current: Ekman upwelling vs. eddy dynamics

Creator:: Combes, V., Chenillat, F., Di Lorenzo, E., Riviere, P., Ohman, M. D., and Bograd, S. J.
Abstract:: The low-frequency dynamics of coastal upwelling and cross-shelf transport in the Central and Southern California Current System (CCS) are investigated using the Regional Ocean Modeling System (ROMS) over the period 1965-2008. An ensemble of passive tracers released in the numerical model is used to characterize the effects of linear (Ekman...
Resource Type:: Article
Full Text:: c e g i Fig. 6. Surface composite maps of vorticity (c–d, (s�1)), SSH (e–f, (m)), and surface

SeaSoar CTD observations from the central Oregon shelf, cruise W9907C : 13-31 July 1999 : a component of the Prediction of Wind-Driven Coastal Circulation Project

Creator:: Barth, John A., O'Malley. R., Erofeev, A. Y., Fleischbein, Jane, Pierce, S. D., and Kosro, P. M.
Abstract:: The primary objectives of R/V Wecoma cruise W9907C were to: 1) collect threedimensional fields of temperature, salinity, and light absorption and attenuation using the towed, undulating vehicle SeaSoar; 2) collect 3-D fields of velocity using shipboard ADCP; 3) to make turbulence profiles along a single cross-shelf transect; and 4) locate,...
Resource Type:: Technical Report

Observing biogeochemical cycles at global scales with profiling floats and gliders: Prospects for a global array

Creator:: Johnson, Kenneth S., Berelson, William M., Boss, Emmanuel S., Chase, Zanna, Claustre, Herve, Emerson, Steven R., Gruber, Nicolas, Kortzinger, Arne, Perry, Mary Jane, and Riser, Stephen C.
Abstract:: Chemical and biological sensor technologies have advanced rapidly in the past five years. Sensors that require low power and operate for multiple years are now available for oxygen, nitrate, and a variety of bio-optional properties that serve as proxies for important components of the carbon cycle (e.g., particulate organic carbon)....
Resource Type:: Article
Full Text:: at u R e B y K e N N e t h s . J o h N s o N , W I l l I a m m . B e R e l s o N , e m m a N

ScholarsArchive@OSU

Normal-Mode Instabilities of a Time-Dependent Coastal Upwelling Jet

Coastal Wind-Driven Circulation in the Vicinity of a Bank. Part II: Modeling Flow over the Heceta Bank Complex on the Oregon Coast

Coastal Wind-Driven Circulation in the Vicinity of a Bank. Part I: Modeling Flow over Idealized Symmetric Banks

Internal‐tide generation and destruction by shoaling internal tides

A Modeling Study of Eulerian and Lagrangian Aspects of Shelf Circulation off Duck, North Carolina

Internal‐tide energy over topography

Riverine input of macronutrients, iron, and organic matter to the coastal ocean off Oregon, U.S.A., during the winter

Cross-shore transport variability in the California Current: Ekman upwelling vs. eddy dynamics

SeaSoar CTD observations from the central Oregon shelf, cruise W9907C : 13-31 July 1999 : a component of the Prediction of Wind-Driven Coastal Circulation Project

Observing biogeochemical cycles at global scales with profiling floats and gliders: Prospects for a global array

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