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226 - 250 of 881 Items << < 5 6 7 8 9 10 11 12 13 14 > >>
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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...
2009-08 (iso8601)
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Antarctic Ice Sheet mass balance and, hence, sea level change is affected by the floating extensions of outlet glaciers and ice streams that take up about 44% of the coastline (Drewry et al., 1982) and are referred to as "ice shelves". Ice sheet...
2014-05-16 (iso8601)
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The relative influences of stand structure and topographic
variation on volume growth, photosynthetic surface area,
and stem growth efficiency were determined for six 17 to
23 year old well stocked stands in the central Oregon
Coast Range. Plots...
1986-05-30 (iso8601)
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This study examined the relationships between the frequency of occurrence and severity of Douglas-fir dwarf mistletoe (Arceuthobium douglasii Engelmann), environmental and stand conditions, and plant communities in the Southern Oregon Cascade...
1995-06-08 (iso8601)
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58 x 46 cm., on sheet 85 x 83 cm., fold. in envelope 30 x 24 cm. Relief shown by contours and spot heights. "Contour interval 20 feet." "Prepared in cooperation with the U.S. Atomic Energy Commission." "Geology mapped in 1961. Contours on...
1967-04-25
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'May 1, 1940.' 'F-225.' Relief shown by contours.
1940-05-01
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published accounts of these trips consist mainly of personal experiences, much geographical knowledge was accumulated, for he persisted in going beyond well known routes into new areas, and notes were made on archeological sites. On the 1921...
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Other examples would include the influence of land-use practices and of vegetation modification on the hydrologic regimen; the drought tolerance of various species of phreatophytes; the relation between depth of water table and consumptive use by...
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TABLE OF CONTENTS PART I INTRODUCTION 18 - 11 History and ethnology 18 Irrigated area table 19 Cultural geography 19 General physiographic features 262e . .3 Physiographic areas and farming 1d CLIMATE 182 - 18 Climatic table, Sprague River,...
2024-04-25
2005-05-06 2004-10-20 |
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Title from cover; "May 1991"
1991-04-25
2004-10-21 2004-06-16 |
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The lecturer at the Government's West Vista House displays a topographic model of the foundation upon which the dam rests.
2024-04-25
2024-04-25 |
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Monitoring geomorphic changes in response to river restoration interventions through the use of repeat topographic surveying is becoming more common in long-term monitoring programs. Repeat montitoring surveys are often preformed before and...
2009-04-01
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Numerous field and analytical methods exist to assist in the quantification of the quantity and quality of in-stream habitat for salmonids. These methods range from field sketches or 'tape and stick' ground-based surveys, through to spatially...
2011-03-01
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Digital elevation models (DEMs) derived from ground-based topographic surveys have become ubiquitous in the field of fluvial geomorphology. Their wide application in spatially explicit analysis includes hydraulic modeling, habitat modeling, and...
2014-06-01
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Map of Cache County Utah, April 1931. Map shows entire county, with township and range grid and detailed topographical features such as elevation, rivers, cities, county boundaries, roads (by type), canals, pumping plants, and railroads. Drawn by...
1931-04-01
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The Sumner G. Margetts and Company records (1949-1987) contain documents, books, catalogues, job files, financial records, drawings, and maps pertaining to the Utah Engineering firm that existed throughout the 20th century. Margetts was a civil...
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Although climate acts as a fundamental constraint on the distribution of
organisms, understanding how this relationship between climate and distribution varies over a
species’ range is critical for addressing the potential impacts of accelerated...
2013-06 (iso8601)
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While bubble plumes have been acoustically imaged in the water column above marine gas
hydrate deposits in many studies, little is known about the temporal variation in plume intensity. In
July 2008, we conducted surveys using 3.5 and 12 kHz...
2013-04-15 (iso8601)
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Grazing on the mountainous forested ranges of the Camp Creek
Unit, Malhuer National Forest, was typified by irregular distribution
of free-ranging cattle. A combination of management and physical,
topographic constraints caused cattle to...
1979-08-24 (iso8601)
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This project hypothesizes that the use of multiple ground-based remote sensing methods can collectively characterize the geophysical signatures of four marked human burials at the Confederated Tribes of Siletz Indians historic period cemetery. If...
2001-03-20 (iso8601)
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Dead wood patterns and dynamics vary with biophysical factors, disturbance history, ownership, and management practices. Through field and modeling studies, I examined the current and potential future amounts of dead wood in two landscapes and...
2005-06-01 (iso8601)
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Using historical maps and tools provided by GJS, the spatial patterns of
pre-logging forest conditions were quantified for three landscapes in western
Oregon. The spatial coincidence between forest patches and topographic
features was determined...
1996-07-30 (iso8601)
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This study was conducted to determine how the size and orientation of large
wood placed in streams in combination with peak flows, substrate and channel gradient
affect pool volume, surface area and maximum depth in two coastal Oregon streams....
1997-05-12 (iso8601)
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