From April 2009 to February 2010, coupons of materials which could be used in the rotor, drive train, or foundation of tidal energy devices were deployed in-situ on the seabed at a prospective tidal energy site to screen for biofouling and corrosion. Materials include glass and carbon fiber composites, stainless...
This report summarizes the outcomes of a March 22-25, 2010, workshop in Seattle, Washington, on the environmental effects of tidal energy development. The workshop focused on building capabilities to evaluate the environmental effects of tidal energy from turbines placed in the water column throughout the United States. However, it did...
The motion of floating objects are of importance to engineers and scientists in a
range of applications. For example, in the design of ships and wave energy convertors
and the study of debris mobilized by tsunamis. Measuring the movement of floating
objects in the laboratory can be challenging. Six degrees...
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.
This presentation was given as part of Oregon State University's College of Oceanographic and Atmospheric Sciences graduate student seminar series. Sherman describes the concept of marine spatial planning and then applies to the Oregon nearshore environment. The updating of Oregon's Territorial Sea plan requires new information about uses of the...
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...
Increasingly diverse interests in commercial and recreational use of marine resources are creating new challenges for coastal ocean management. One concern of increased offshore use and development off the Oregon coast is the potential impact on marine bird populations. We summarized the primary surveys of seabird breeding colonies and at-sea...
In this report we present results of a sound propagation modeling study off the coast of Newport, OR. Preliminary acoustic experimental data was also collected by an underwater glider equipped with a hydrophone to measure sound levels in a short transect perpendicular to the coast and away from a sound...
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....
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...
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...
Reference Model #1 is a tidal turbine operating in a narrow, tidal channel. The site is a generalized version of Tacoma Narrows, Puget Sound, Washington. The resource is a mixed, mainly semidiurnal tidal regime with two ebbs and floods each day of unequal strength (i.e., a diurnal inequality in which...
Hypothetical power dissipation by a tidal in‐stream energy conversion device was calculated for Admiralty Inlet, Washington, a highly energetic entrance channel to Puget Sound and currently a candidate for tidal energy development. Power dissipation was calculated for a device of a given capacity as a function of hub height above...
The first wave energy test at the Northwest National Marine Renewable Energy Center’s (NNMREC) North Energy Test Site (NETS) off the coast of Newport, OR took place in 2012 with the deployment of the WET-NZ wave energy conversion (WEC) device and the Ocean Sentinel instrumentation buoy. The WET-NZ and Ocean...
This study was conducted to determine whether a low-powered sound source could be effective at deterring gray whales from areas that may prove harmful to them. With increased interest in the development of marine renewal energy along the Oregon coast the concern that such development may pose a collision or...
The North Energy Test Site (NETS) is PMEC’s non-grid connected, open ocean test site located approximately 4.6 km (2.5 nautical miles) off Yaquina Head, north of Newport, Oregon. The site is about 3.4 km2 (1 square nautical mile) and ranges in depth from 45 - 55 meters. It has a...
The North Energy Test Site (NETS) is PMEC’s non-grid connected, open ocean test site located approximately 4.6 km (2.5 nautical miles) off Yaquina Head, north of Newport, Oregon. The site is about 3.4 km2 (1 square nautical mile) and ranges in depth from 45 - 55 meters. It has a...
Soil‐structure interaction has been an area of active research since the 19th century and has evolved significantly over the past 150 years (Kausel, 2010). Previous soil‐structure interaction studies have been based on numerical simulations (e.g., Costantino et al. 1976; Jensen et al. 1999; Jensen, Edil et al. 2001; Jensen, Plesha...
This document presents the results from discrete element method (DEM) simulations of interface shear compared to previously published data from similar physical experiments. Rough shafts emplaced in granular assemblies are subjected to monotonic and cyclic loading and the results evaluated. The granular‐continuum interface behavior for different anchor surface roughnesses is...
Abstract— A highly idealized model of an ocean-fjord system, in which the tide is forced astronomically by the gravitational force of the moon, is used to study effects of localized tidal energy extraction on regional and global tides. The modeled system is energetically complete in the sense that the model...