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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Utilization of inorganic and organic nitrogen by phytoplankton off the Washington and Oregon coasts

Kokkinakis, Steven Andon 31 July 1986 (has links)
Graduation date: 1987
32

A complex distribution of water masses and related circulation off northern California in July 1981

Olivera, Ricardo Martin 17 December 1982 (has links)
Graduation date: 1983
33

Ecological interactions of three Littorina (Gastropoda, prosobranchia) along the West coast of North America

Behrens, Sylvia, 1946- 09 1900 (has links)
Thesis, Ph.D., Oregon, Dept. of Biology Vita Bibliography: l. 109-111
34

The development of the Japanese market for Pacific Northwest lumber : a historical survey

Shand, Eden Arthur January 1968 (has links)
This thesis describes the manner in which the Japanese market for Pacific Northwest lumber grew over the last one hundred years. The description attempts to explain why British Columbia, which for many years was the under-dog in the Japanese market, suddenly and irrevocably took the lead from Washington and Oregon in 1961. The answer seemed to lie in B.C.'s marketing philosophy - the international marketing orientation - which geared her in practical terms for the export markets of the world generally and for Japan particularly. Manifestations of this marketing philosophy were first seen around 1934 when H.R. MacMillan, in spite of an ample and virtually guaranteed U.K. market, recognized the importance of keeping one foot in relatively slack markets like Japan. It was a question of increasing B.C.'s market share. Yet it took more than twenty-five years for the Province to bear the fruits of this orientation. There were good reasons for this time lag. Prior to 1961, except for a fifteen year period after the Great Japanese earthquake of 1923, Japan was a modest purchaser of Pacific Northwest lumber. The greater part of these lumber shipments were of large Douglas fir squares which Washington and Oregon were in a better position to supply. In the latter part of the decade of the 1950's, however, when large-sized Douglas fir was needed for the developing Pacific Northwest plywood industry, and when the booming Japanese economy needed more timber, the Japanese had to look for an alternative species. Hemlock was their choice and both British Columbia and the American Northwest had ample supplies of these resources. But whereas B.C., being geared to the export market, could economically cut unusual Japanese specifications, the American Northwest being geared to their domestic market could not. The Japanese bought U.S. logs instead of lumber for cutting to their requirements at home. Thus, by supplying Japan with their large demand for hemlock baby squares, B.C. surpassed Washington and Oregon. In recent retaliation, the Americans have passed legislation restricting the export of logs from their territory with the hope that the Japanese would buy more lumber from them. But this writer predicts that unless the lumbermen of the American Northwest adopt the international marketing orientation expounded upon in this thesis and gear themselves for the export market, then no amount of log export legislation can guarantee them their former ascendancy in the Japanese lumber market. / Business, Sauder School of / Graduate
35

Seasonal and secular variations of sea level with special reference to the Canadian Pacific Coast

Siebenhuener, Hajo Fritz Wilhelm January 1970 (has links)
In the first part of this thesis definitions of sea level are given and causes and effects of its seasonal and secular variations are briefly discussed. The second part deals with the numerical determination of these changes on the coast of British Columbia. Using raw tidal data in the form of monthly means of sea level, seasonal variations are determined as annual oscillations with mean amplitudes between 5 and 12 cm for seven stations on the B.C. coast. The investigation of secular variations is based on (raw) annual means of sea level. These variations are essentially represented by linear trends which are statistically significant at the stations VICTORIA, VANCOUVER, POINT ATKINSON and PRINCE RUPERT, where they indicate submergence. Assuming an eustatic rise of sea level at the rate of 1.0 mm/yr, the influence of land movement on submergence is estimated. For VICTORIA, a probable land uplift since 1909 and for VANCOUVER, POINT ATKINSON and PRINCE RUPERT a definite land subsidence since about 1943 is found. The rates of land subsidence range between 1 and 2 mm/yr. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate
36

The geology of the Floras Creek area, Curry County, Oregon

Bounds, Jon Dudley 01 January 1982 (has links)
The Floras Creek area, east of the town of Langlois, near the southwest Oregon coast, includes Colebrooke Schist (a klippe of metamorphosed pelitic sediments of Jurassic age), Jurassic Otter Point Formation (a melange complex), and lower the middle Eocene Roseburg and Lookingglass Formations, part of a sandstone-shale sequence occurring more extensively in other areas. The Colebrooke Schist occurs in the south-central part of the area, bounded on the Otter Point and Roseburg. The Lookingglass is exposed as a small (1.5 sq. km) block in the north-north-west part of the area. Two major structural trends are found in the Floras Creek area; an older Mesozoic east-west normal fault trend which is truncated by younger serpentinitefilled, north-south shear zones. The younger fault trend was active into the Tertiary as the faults cut the Eocene. Detrital modal analyses of sandstones suggest that the Otter Point is related to the coeval Dothan Formation of the interior Klamath Mountains, in the same way that the Franciscan is related to the Great Valley sequence in California. The detrital modal analysis indicates that the Otter Point is trench-slope deposited sediments as is the Franciscan and the Dothan is forearc basin deposits similar to the Great Valley.
37

Changing communities, changing goals and changing dreams : youth perceptions of present and future possibilities in coastal British Columbia

Harrison, Kathy Lorraine. 10 April 2008 (has links)
No description available.
38

Geology of the continental terrace off the central coast of Oregon

Maloney, Neil Joseph 23 April 1965 (has links)
The continental terrace west of Oregon between 43° 50'N and 44° 40' N latitude is 50 to 55 miles wide. It consists of a continental shelf, 16 to 35 miles wide, and a continental slope, 16 to 37 miles wide. The eastern portion of the shelf is a smooth, sediment covered area that slopes very gently west. The western portion of the shelf contains four rocky bank areas. The banks are topographically irregular and appear to be of structural origin. West of the banks the shelf edge occurs at depths of 71 to 90 fathoms. The continental slope extends from the edge of the shelf to the abyssal plain at depths of 1530 to 1610 fathoms. A smooth upper slope of less than three degrees extending to depths of 117 to 250 fathoms occurs north and south of Heceta Bank. West of Heceta Bank the upper slope is formed by a scarp that slopes 10° to 16° to 560 to 725 fathoms. West of the upper slope there is an area of irregular topography, including benches, hills and scarps, which extends to depths of 380 to 1100 fathoms. The lower part of the slope is formed by a north-striking scarp which is 3000 to 6000 feet high and slopes 04° to 15°. The bathymetry indicates that the continental slope was formed by step-type, block faulting. Sediments form a thin surface layer over much of: the terrace. Detrital sand, similar to the coastal sand, covers the shelf from the shoreline to approximately 50 fathoms. The deeper areas on the shelf and upper part of the slope are covered by glauconitic sands and silts on the topographic highs and olive green, clayey silts in the topographic lows. The intermediate and lower portions of the slope are blanketed with olive-green, clayey silt. In these sediments the sand fraction, which generally comprises less than five percent of the sample, is composed chiefly of diatoms, Foraminifera, Radiolaria, and sponge spicules. Sands are also present on the intermediate and deep portions of the slope. Dredge hauls west of Newport obtained sand composed mainly of detrital grains which may have been derived from an underlying friable sandstone. Thin layers of sand occur in cores from other portions of the slope. These sands may have been derived by down slope movement of sediment from the upper slope and the shelf. Sedimentary rocks of Upper Miocene and Pliocene age crop out on the shelf banks and on the continental slope. The banks consist of a sequence of diatomaceous, clayey siltstones with interbeds and concretions of calcareous siltstones. Glauconite sandstone, gray wacke sandstone, and limestone breccia are exposed along with the siltstone, on the northern end of Heceta Bank. Most of the rocks obtamed from the slope are similar to those from the shelf. Friable, wacke sandstone is exposed on the slope west of Newport. Foraminifera, the sand fraction compositions, and textural analyses all indicate that the sediment forming the siltstones from the shelf were deposited at lower littoral to lower bathyal depths. The sediments forming the rocks were deposited in one or more sedimentary basins during the Miocene and Pliocene. The subsidence continued until the. Late Pliocene when the area began to rise. The area was uplifted as much as 1000 fathoms by the Late Pleistocene when the shelf was eroded by transgressions and regressions resulting from sea level changes. The last rise in sea level resulted in the erosion of the shelf to its present form and the deposition of a thin layer of sediment. Sand is presently being deposited on the shallow areas adjacent to the continent, and silt and clay are being laid down on the slope and the sheltered areas of the outer shelf. / Graduation date: 1965
39

Industry-scientist cooperative research : application to the West Coast groundfish fishery

Harms, John (John Howard) 13 April 1999 (has links)
Declining harvest levels, static agency research budgets, and increasing tension among scientists, managers, and industry members are the legacy of the present research and management institutions in the West Coast groundfish fishery. Cooperative research, the active participation of the commercial fishing industry in scientific research, is receiving increased attention as a potential alternative to current practices. Its strongest attributes are its potential to improve the spatial and temporal coverage of fisheries data collection and its potential to reduce marginal research costs. Despite these potential benefits, there are several obstacles to adopting cooperative research on a large scale including concerns about biased data, compatibility and continuity with current data gathering regimes, and the motivations of the participants. This paper examines the role that attitudes, beliefs, and perceptions play in influencing one's willingness to participate in cooperative research. Six focused discussions were held with industry, scientists, and managers in the West Coast groundfish fishery to define the key issues of cooperative research and to assist in designing a written questionnaire. The questionnaire was mailed to scientists, managers, and industry members in the groundfish fishery to elicit responses on issues including the current science and management process, uncertainty, industry-scientist working relationships, and the costs and benefits of potential cooperative research projects. Analysis of variance (ANOVA) was used to examine response differences among groups, and discriminant analysis was employed to identify characteristics that differentiated among groups formed as a result of their survey responses. Results indicated that both scientists and industry believe cooperative research has potential for improving fisheries science, however there were significant differences between the groups on most other issues. Generally, industry respondents were more critical of the industry-scientist working relationship and scientists' and managers' commitment to cooperation than were the scientists and managers themselves. Scientists tended to be more skeptical than industry about the direct involvement of industry in fisheries science projects such as port interview programs and independent industry scientist research organizations. Both groups demonstrated considerable heterogeneity, although industry tended to hold a greater diversity of opinions and perceptions than did scientists. Significant differences on certain issues were often explained by one's degree of involvement in the management process, state of residence, employer, job description, and gear type. The results of this survey provide useful data for the selection and design of future cooperative research projects and identify areas upon which scientists, managers, and industry need to improve if cooperative research is to play a larger role in fisheries science. / Graduation date: 2000
40

Patterns of benthic macroinvertebrate communities and habitat associations in temperate continental shelf waters of the Pacific Northwest

Lee, Timothy Seung-chul 19 April 2012 (has links)
Macroinvertebrates constitute the backbone of megafaunal communities in benthic ecosystems around the globe. Many macroinvertebrates have vital roles in benthic ecosystems, ranging from enhancing habitat complexity to providing staple food sources for other organisms. Regardless of how familiar macroinvertebrates are to the general public, very few studies have attempted to describe benthic macroinvertebrate assemblages across large spatial scale in the continental shelf waters of the Pacific Northwest. This study describes different subtidal macroinvertebrate assemblages off Washington and Oregon based on species-substrata associations and the key species that distinguish one assemblage from another. Two data sets were used for this study: underwater footage collected by the submersible Delta during 1993-1995 geological surveys, and footage collected by the remotely operated vehicle (ROV) Hammerhead during macroinvertebrate surveys in late summer 2011. Footages from these surveys were used to document species-substrata associations and distinguish different assemblages based on species composition similarities and dissimilarities. In addition, I determined if a specific group of invertebrates, Asteroids (Echinodermata), were useful in explaining different assemblage patterns, after all other environmental parameters were taken into account. Findings of this study can be used not only to shed light on the structure of macroinvertebrate communities in the Pacific Northwest, but also as baseline data for future research on the direct and indirect effects of potential offshore installations on macroinvertebrate communities across the continental shelf waters. / Graduation date: 2012

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