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ScholarsArchive at Oregon State University
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The oceanic tidal angular momentum (OTAM) has
Been demonstrated to be the primary cause for the diurnal and
semidiurnal variations in the Earth's rotational rate, or ∆UT1.
Three ocean tide models derived from the Topex/Poseidon
altimetry mission...
1995-08-01 (iso8601)
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Tidal energy dissipation is estimated for eight semidiurnal
and diurnal constituents using a global inverse
solution constrained by TOPEX/Poseidon altimeter data.
Very similar spatial patterns are obtained for all semidiurnal
constituents, with...
2003 (iso8601)
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Most of the tidal energy dissipation in the ocean occurs in shallow seas, as had long been recognized. However, recent work has suggested that a significant fraction of the dissipation, perhaps 1 TW or more, occurs in the deep ocean. This paper...
2001-10-15 (iso8601)
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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...
2009-12 (iso8601)
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Magnetotelluric (MT) data from two sites 150 and
300 km southeast of San Francisco, California (geomagnetic
dipole latitude: 43 degrees, L approximately 1.9) show that
the usual MT assumption of spatially uniform external magnetic
fields is...
2000-01-01 (iso8601)
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Altimetric data from the TOPEX/POSEIDON mission will be used for studies of global ocean circulation and marine geophysics. However, it is first necessary to remove the ocean tides, which are aliased in the raw data. The tides are constrained by...
1994-12-15 (iso8601)
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A hydrodynamic model incorporating a self-consistent treatment of ocean selfattraction
and loading (SAL), and a physically based parameterization of internal tide (IT)
drag, is used to assess how accurately barotropic tides can be modeled without...
2004 (iso8601)
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Measurements of tidal currents on the central Oregon shelf are available from several
sources, including recent high frequency (HF) coastal radar and Acoustic Doppler
Profiler (ADP) deployments, and historical current moorings. In this paper we...
2003 (iso8601)
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In conjunction with the USArray component of
EarthScope, long period magnetotelluric (MT) data are
being acquired in a series of arrays across the continental US.
Initial deployments in 2006 and 2007 acquired data (10–
10,000 s) at 110 sites...
2008 (iso8601)
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How and where the ocean tides dissipate
their energy are longstanding questions with both
oceanographic and astronomical implications. Two
decades ago, Doake suggested that flexing of Antarctic
ice shelves by the underlying ocean tide is an...
1997-03-01 (iso8601)
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The most accurate determinations of the global ocean tides are currently based on altimeter measurements made by the Topex/Poseidon satellite. The error spectrum corresponding to the M₂ tidal solution is here estimated, primarily by inverse...
2001-01-01 (iso8601)
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Tidal phenomena in the Indonesian
seas are among the most complex in the
world. Complicated coastal geometries
with narrow straits and myriad small islands,
rugged bottom topography next to
wide shelves of shallow water, and large
quantities of...
2005 (iso8601)
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Over 20 global ocean tide models have been developed since 1994, primarily as a
consequence of analysis of the precise altimetric measurements from TOPEX/POSEIDON and as a result of parallel developments numerical tidal modeling and data...
1997-11-15 (iso8601)
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Air–sea coupling during coastal upwelling was examined through idealized three-dimensional numerical simulations with a coupled atmosphere–ocean mesoscale model. Geometry, topography, and initial and
boundary conditions were chosen to be...
2007-08 (iso8601)
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The Vizcaino block is an anomalously shallow region of the western U.S continental margin located southwest of the Mendocino triple junction. It originated as part of the accretionary prism of the North America plate and was transferred to the...
1998-10-10 (iso8601)
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In spite of an order of magnitude increase over the past 15 years in spatial sampling of the wavefield, a major uncertainty in the analysis of active source seismic data remains phase identification. This uncertainty results in part from the wide...
1997-12-15 (iso8601)
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A simultaneous inversion for velocity and attenuation structure using multiple seismic attributes has been applied to refraction data from the 1986 GLIMPCE Lake Superior experiment. The seismic attributes considered include envelope amplitude,...
1997-05-10 (iso8601)
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Loss of wetlands within Oregon has led to strong interest in restoring wetlands that once existed. Restoration practitioners are currently using knowledge they have gained from many years of working with wetlands to design and carry out...
2010-05-10T18:05:27Z (iso8601)
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Tourism is an ever-growing economic force across the world, the United States, Oregon, and on the Oregon Coast. In Oregon alone, the tourism industry had an economic impact in the state of $7.9 billion in 2006, up from $6.9 billion in 2004 (OTC,...
2010-05-10T18:21:25Z (iso8601)
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Recent observational programs to understand the coastal ocean, like the Oregon Coastal Ocean Observing System (OrCOOS) are under development (www.orcoos.org). A challenge in facing observing systems is achieving spatial and temporal coverage at...
2010-05-10T18:18:35Z (iso8601)
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This project examined a watershed council sponsored volunteer estuary water quality monitoring program, from initial implementation to program status five years later. In addition, literature research and interviews with estuarine experts were...
2010-05-10T18:16:12Z (iso8601)
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The Queen Charlotte Fault is a transpressive transform plate boundary between the Pacific and North American plates offshore western Canada. Previous models for the accommodation of transpression include internal deformation of both plates...
2000-04-10 (iso8601)
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Log and core data document gas saturations as high as
90% in a coarse-grained turbidite sequence beneath the gas
hydrate stability zone (GHSZ) at south Hydrate Ridge, in the
Cascadia accretionary complex. The geometry of this gas-saturated
bed is...
2004-12-14 (iso8601)
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In 1989, we conducted an onshore/offshore seismic experiment to image the crustal structure of the Cascadia forearc. In this paper, we discuss the processing and interpretation of a multichannel seismic reflection profile across the continental...
1995-08-10 (iso8601)
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Seismic data and seafloor samples indicate the presence of free gas, gas hydrate, and
fluid seeps south of the Gorda Escarpment, a topographic feature that marks the eastern
end of the Gorda/Pacific transform plate boundary southwest of Cape...
2003-05-21 (iso8601)
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