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ScholarsArchive at Oregon State University
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A marine seismic refraction study, conducted in August 1976 by personnel
from Oregon State University and the University of Connecticut between Cape
Simpson and Prudhoe Bay, Alaska, provides data for analysis which yields a
subsurface structural...
1979-01-12 (iso8601)
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Gravity and seismic data obtained by the geophysical group at
Oregon State University on the R/V YAQUINA during 1969, 1971, and
1973 plus other available data over the area just west of Nicaragua
and Costa Rica indicate the tectonic complexity of...
1975-09-24 (iso8601)
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Three seismic refraction profiles obtained between 42°N and
43°N along the median valley of the Gorda Ridge, an active spreading
center, allow the computation of the velocity structure underlying the
valley. Wide angle reflections which appear on...
1977-08-10 (iso8601)
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A free-air gravity anomaly map of the area between 10°-17°N and
90°-101°W shows distinctive positive and negative anomalies which
parallel the Tehuatepec Ridge. The positive anomaly approximately
overlies the topographic expression of the ridge....
1975-07-17 (iso8601)
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Seismic refraction data collected in 1985 by the USGS were used in
this study to derive the P and S velocity structure of the crust beneath the
Gulf of Maine. The data quality differs among instruments and is affected
by surficial lateral...
1990-10-04 (iso8601)
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Geophysical data collected in 1975 and 1976 reveal major
crustal and tectonic elements of the continental margin of southern
Baja California. Gravity, magnetic, seismic reflection and bathymetric data show seaward extension of the islands...
1977-04-28 (iso8601)
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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...
2012-02-10 (iso8601)
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We developed a hybrid cellular automata (CA) modelling approach to explore the dynamics of a key predator–prey interaction in a marine system; our study is motivated by the quest for better understanding of the scale and heterogeneity-related...
2012-02 (iso8601)
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Geophysical surveys in the Gulf of California provided
the data to construct contour maps of bathymetry, free-air
anomalies and total field magnetic anomalies for the area
north of 27° N. Major faults such as the Ballenas-
Salsipuedes, Tiburón,...
1988-05-02 (iso8601)
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Experimental work at the 1982 Dry Deposition Intercomparison
Experiment (DDIEx) involved the use of optical particle counters for
covariance estimates of dry deposition velocities of accumulation mode
aerosols. Meteorological and particle flux...
1984-06-12 (iso8601)
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The WSR-57 weather radar operated by the National
Weather Service at Sacramento, California, plus a network
of precipitation gages provided data for this comparison
of radar reflectivity with precipitation rates. Located
in a valley with mountains...
1975-06-30 (iso8601)
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Four buoyant plumes were produced within a laboratory convectively
mixed layer from a source height of about z[subscript s] = 0.15 h,
where h is the height of the convectively mixed layer. The
projected images of these plumes in the X-Z plane were...
1984-08-30 (iso8601)
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Low-temperature hydrothermal activity in Iceland is
apparently mostly controlled by dikes and fractures.
Conventional methods of production data analysis are not
readily applicable in cases of heterogeneous/anisotropic
fracture dominated...
1985-06-06 (iso8601)
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Crustal and upper mantle structures in the West Philippine Basin,
along 17-18°N, have been determined using explosions as sources and
ocean bottom seismometers to measure refracted compressional waves.
Seismic refraction profiles out to nearly 500...
1983-04-15 (iso8601)
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The Gorda Basin is a young oceanic plate which comes in direct
contact with the convergent margin of western North America. Two long
sonobuoy refraction profiles crossing the basin provide nearly continuous
data for computing the velocity...
1980-12-05 (iso8601)
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Gravity measurements made during 1979 and 1980, combined with
existing gravity measurements, provide data for the interpretation
of upper crustal structures relevant to the assessment of the geothermal
potential of south-central Oregon.
West of...
1981-07-02 (iso8601)
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The displacement of the free liquid surface in geothermal and
hydrologic reservoirs is an important capacitance factor. An
iterative approach to determining the drawdown of the free liquid
surface for a single sink region in a homogeneous,...
1981-04-30 (iso8601)
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High seismic activity occurs along the Caribbean and the North
American Plate boundary beneath the eastern part of Hispaniola. A
large number of intermediate to deep earthquakes are clustered between
the Puerto Rico Trench to the north and the...
1989-11-03 (iso8601)
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We have determined the seismic crustal structure of the
northern part of the Gorda Ridge using signals generated by
explosive charges and recorded on Ocean Bottom Seismometers. The
shot pattern forms two parallel lines, one on the east flank and...
1984-09-28 (iso8601)
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The numerical analysis of thermal convection in porous media,
heated from below, and assuming Darcy flow conditions, involves the
solving of a set of non-linear equations for the temperature and flow
fields. The condition of criticality...
1979-04-26 (iso8601)
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A time-dependent, spectral, barotropic model and a similar
two-layer primitive equation model are developed to investigate the
planetary-scale wave responses to various types of large-scale
forcing: vorticity and heat sources, and sea surface...
1984-03-27 (iso8601)
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The Roza flow of the Columbia River Basalt group in
Washington State U.S.A. extruded at about 15 Ma during
intermediate geomagnetic polarity. The Roza is underlain
by normal polarity flows and overlain by reversed units.
The Roza is an extensive...
1989-07-06 (iso8601)
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Using gravity, magnetic, bathymetric and seismic
refraction data, I have constructed a geophysical cross-section
of the central part of the northern Gulf of California. The
section exhibits a crustal thickness of 18 km and features an
anomalous...
1989-06-09 (iso8601)
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