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ScholarsArchive at Oregon State University
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Based on the principle that the history of a discipline is important to the discipline itself, this thesis devotes two chapters to ROBERT HOOKE AND THE FOUNDATION OF GEOLOGY and two chapters to modern geology, viz. THE TECTONIC EVOLUTION OF THE...
1981-03-04 (iso8601)
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The claw shuddering display of the shore crab Hemigrapsus oregonensis was explored with acoustic and behavioral observations. Male H.
oreqonensis stridulate during claw shuddering display. The stridulatory apparatus is present only on the males....
1977-08-25 (iso8601)
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The Antarctic Ocean during the Cenozoic experienced four periods of increased surface productivity: the Middle Eocene; the beginning of the Miocene; the Middle Miocene; and near the Miocene-Pliocene boundary. The fourth increase in productivity...
1977-04-21 (iso8601)
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Over fishing, by-catch of non-target fish species, marine mammals, seabirds, and damage to benthic habitats remain serious problems in fisheries management. Management methods based on traditional command and control (CAC) approaches may meet with...
2008-08-12T18:23:55Z (iso8601)
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This article considers the evolutionary pressures that have brought us to our present state and how these forces will likely change, with a focus on U.S. institutional structures.
2008-09 (iso8601)
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Seafloor lithologic maps have been widely used to identify conservation sites. In this study, a lithologic interpretation of Oregon's territorial seafloor was created as an interim product in response to the need for a comprehensive lithologic map...
2008-09-26T19:02:24Z (iso8601)
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Olympia oysters, “Ostrea conchaphila,” were once common along the west coast of North America. A popular delicacy, native oyster populations began to decline in the late 1800’s due to over‐harvest, degraded water quality, and habitat loss....
2008-08-06 (iso8601)
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Northern sea lions (Eumetopias lubatus) were studied at three sites (Rogue Reef, Oregon, Marmot Island, Alaska, and T.Ugamak Island,
Alaska) during the 1982, 1983, 1985, and 1986 breeding seasons. Data were collected on female activity budgets,...
1987-05-28 (iso8601)
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Coastal communities in the Pacific Northwest are looking for ways to increase the diversity of their economies in order to reduce the negative impacts of cyclic economic swings. The economic base of many coastal communities is directly tied to...
2008-12-30T15:00:29Z (iso8601)
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Light plays an important role in ecological processes in the ocean both day and night. While relatively inexpensive, off the shelf instruments are available to measure Photosynthetically Active Radiation or PAR during the day, efforts to quantify...
2008-12-00 (iso8601)
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We sharpen our view of an eastern boundary current region during
the upwelling season through the analysis of several data sets.
We focus on the mesoscale flow field off of northern California,
observed during the Coastal Transition Zone (CTZ)...
1998-05-06 (iso8601)
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Plankton and surface sediment samples from the Gulf of California
were analyzed to determine the present geographic distribution of silicoflagellate
species in this area. Variations in the composition of the
silicoflagellate assemblage are related...
1982-02-24 (iso8601)
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A benthic microbial fuel cell (BMFC) is an electrochemical device that
generates current from the redox gradient at the sediment-water interface. Early
prototypes had anodes buried in anoxic sediments and cathodes in overlying water.
The BMFCs...
2009-01-20T17:14:51Z (iso8601)
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An experiment on solitary wave impact on a vertical cylinder was conducted in
the three-dimensional wave basin at the Oregon State University Hinsdale Wave
Research Laboratory. The cylinder was designed using mechanic principles and finite element...
2009-02-13 (iso8601)
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We investigate, theoretically and experimentally, the problem of modeling depth-integrated (2DH) surf zone circulation on an alongshore-nonuniform natural beach, with waves approaching from an arbitrary angle. An approximate theoretical model is...
2009-04-01T23:23:21Z (iso8601)
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Recent works have investigated use of the hydrogen isotopic composition of C₃₇ alkenones (δD[subscript K37s]), lipid biomarkers of certain haptophyte microalgae, as an independent paleosalinity proxy. I discuss herein the factors impeding such an...
2009-06-15T21:08:27Z (iso8601)
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The distribution of barite (BaSO₄) in marine sediments has long been studied as a proxy for paleoproductivity. While pure barite is known to be a stable mineral in oxic sediments, it is also known that variations in the Sr/Ba ratio influence its...
2009-06-26T17:27:24Z (iso8601)
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