Euphotic zone depth, z[subscript]1%, reflects the depth where photosynthetic available radiation
(PAR) is 1% of its surface value. The value of z[subscript]1% is a measure of water clarity, which is
an important parameter regarding ecosystems. Based on the Case-1 water assumption,
z[subscript]1% can be estimated empirically from the remotely derived...
The Oregon Coastal Transition Zone (OCTZ) extends several hundred
kilometers offshore where shelf flows interact with the northern California Current. A
primitive-equation numerical ocean model is used to study the upwelling circulation in this
region from 1 May to 1 November 2001. This OCTZ model obtains initial and boundary
conditions...
We investigated 32 net primary productivity (NPP) models by assessing skills to reproduce integrated NPP in the Arctic Ocean. The models were provided with two sources each of surface chlorophyll-a concentration (chlorophyll), photosynthetically available radiation (PAR), sea surface temperature (SST), and mixed-layer depth (MLD). The models were most sensitive to...
Oomycetes form a deep lineage of eukaryotic organisms that includes a large number of plant pathogens which threaten natural and managed ecosystems. We undertook a survey to query the community for their ranking of plant-pathogenic oomycete species based on scientific and economic importance. In total, we received 263 votes from...
THE ROLE OF THE OCEANS in Earth systems ecology, and the effects of climate variability on the ocean and its ecosystems, can be understood only by observing, describing, and ultimately predicting the state of the ocean as a physically forced ecological and biogeochemical system. This is a daunting but exciting...
This report describes the accomplishments in the second and final year of a project to develop a
set of measures to monitor the socio-economic effects on the local community of the stream
restoration efforts on the upper Middle Fork John Day River. A panel of Grant County residents
helped develop...
The thesis area includes 44 square miles of the Centennial
Range in Beaverhead County, Montana, and Clark County, Idaho.
The rocks exposed in the area range in age from Precambrian
to Recent and have been divided into 23 mapped units. Pre-Belt
metamorphic basement rocks are overlain unconformably by 3,433
feet...
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, Centennial range, Montana-Idaho
AN ABSTRACT OF THE THESIS OF
JOHN LEE MORAN for the MASTER OF SCIENCE
Connectivity and larval dispersal is explored off the Oregon coast during the summer upwelling season of 2001 using numerical ocean circulation simulations. The study region, with strong wind-driven currents and variable topography, is modeled using the Regional Ocean Modeling System (ROMS) forced by the Coupled Ocean Atmosphere Mesoscale Prediction System....
This is a Biological Assessment (BA) addressing the potential effects on aquatic species currently listed or proposed for listing under the Federal Endangered Species Act (ESA) from the construction of the National Oceanic and Atmospheric Administration’s (NOAA) Marine Operations Center – Pacific (MOC-P) in Newport, Oregon. The MOC-P is proposed...
Optical variability occurs in the near-surface and upper ocean on very short time and space scales (e.g., milliseconds and millimeters and less) as well as greater scales. This variability is caused by solar, meteorological, and other physical forcing as well as biological and chemical processes that affect optical properties and...
This article presents Oregon State University’s experience launching an innovative Open Textbook initiative in spring 2014. The partners, Open Oregon State and the Oregon State University Libraries and Press, aimed to reduce the cost of course materials for students while ensuring the content created was peer-reviewed and employed multimedia capabilities....
Revised February 1962. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The Messenger magazine is published twice annually by Oregon State University Libraries. In this issue: Celebrating our 10th anniversary of the Valley Library remodel
Revised February 1962. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Satellite along-track sea surface height (SSH) and multisatellite sea surface temperature (SST) maps are assimilated in a coastal ocean circulation model off Oregon. The study period is June–October 2005, featuring intensive separation of the coastal upwelling jets in the eddy-dominated coastal transition zone (CTZ). The data assimilation (DA) system combines...
The Jefferson Mountain area, located at the eastern end of
the Centennial Mountains in Fremont County, Idaho and Beaverhead
County, Montana, is approximately 42 square miles in size. The
area contains exposed metamorphic, sedimentary, and volcanic
rocks ranging in age from Precambrian to Tertiary. Approximately
2,500 feet of Paleozoic and...
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were found in the field. Fossils are, generally
rare in the Jefferson owing to dolomitization. Kindle
Oregon Biography Index is intended to serve primarily as a starting point in locating biographies of Oregonians. We have indexed 47 historical volumes which are either entirely devoted to biographies or have large self-contained biographical sections. The profiles in the books vary widely in accuracy and detail. Birth dates of...
Current meter moorings maintained over the Oregon continental shelf in 1973 and 1975 clearly show the difference between winter and spring oceanographic regimes and the rapid transition between the regimes. In winter the mean alongshore current is northward at all depths and strongest near shore; there is no mean vertical...
River Influences on Shelf Ecosystems (RISE) is the first comprehensive
interdisciplinary study of the rates and dynamics governing the mixing of river and coastal
waters in an eastern boundary current system, as well as the effects of the resultant plume
on phytoplankton standing stocks, growth and grazing rates, and community...
Designed to help ranchers recognize common rabbit diseases. Diseases are classified according to major cause-bacterial, viral, nutritional, hereditary, fungal, and miscellaneous (including poisoning, tumors, and vices). For each disease, the symptoms and treatment are described. Provides advice on packing and shipping specimens for laboratory diagnosis as well. Includes black-and-white photographs...
A 1-km-horizontal-resolution model based on the Regional Ocean Modeling System is implemented along the Oregon coast to study average characteristics and intermittency of the M₂ internal tide during summer upwelling. Wind-driven and tidally driven flows are simulated in combination, using realistic bathymetry, atmospheric forcing, and boundary conditions. The study period...
The predictability of coastal ocean circulation over the central Oregon shelf, a region of strong wind-driven
currents and variable topography, is studied using ensembles of 50-day primitive equation ocean model
simulations with realistic topography, simplified lateral boundary conditions, and forcing from both idealized
and observed wind time series representative of...
The Devonian Simonson and Guilmette Formations provide examples of
Cordilleran miogeosynclinal inner and middle shelf carbonate deposition
that act in response to changes in eustasy, sedimentation, and
tectonics. The Simonson Dolomite consists of four members that
collectively record three distinct transgressive-regressive cycles.
The Coarse Crystalline dolomudstone lithofacies represents restricted
upper...
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three zones, at Dutch John Mountain, based on brachiopod and coral
assemblages.
Kellogg (1960, p. 192
Upper Cambrian through Middle Devonian carbonate andclastic sequences of the northern part of the Fish Creek Rangerepresent shallow-shelf sedimentation in the Cordilleranmiogeosyncline. The lower and middle Paleozoic section exposedin the northern Fish Creek Range fits well within regional facies patterns and paleogeographic reconstructions.The Upper Cambrian Dunderberg Shale was deposited in...
The thesis area consists of 42 square miles located
in Madison and Gallatin counties, Montana, in the southern
part of the Madison Range. The strata exposed in the
area range in age from Precambrian to Quaternary and have
an aggregate thickness of more than 7,600 feet.
The Paleozoic rocks, about...
Wild life in Oregon : being a stirring recital of actual scenes of daring and peril among the gigantic forests and terrific rapids of the Columbia River (the Mississippi of the Pacific slope). And giving life-like pictures of terrific encounters with savages ... Including a full, fair and reliable history...
Mankind is facing the spectre of a planet stripped of the resources necessary to sustain the human populations that currently exist-not to mention those unborn multitudes which seem certain to he added in the coming decades. Time is rapidly running out for scientists and engineers to find new resources to...
The group of scientists that make up the Intergovernmental Panel on Climate Change found in 2007 that the warming of Earth’s climate is unequivocal and largely due to human activity. Earth’s climate has changed in the past, though the recent magnitude and pace of changes are unprecedented in human existence....