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Filtering by: Alternative title ssim Frequencies of amounts of daily precipitation at North Bend, Oregon Remove constraint Alternative title ssim: Frequencies of amounts of daily precipitation at North Bend, Oregon Decade 1970-1979 Remove constraint Decade: 1970-1979 Degree Field Oceanography Remove constraint Degree Field: Oceanography

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  • A study of the seasonal variation in temperature and salinity along the Oregon - Northern California coast

    Creator:
    Bourke, Robert H.
    Abstract:
    This study examines the seasonal variability in temperature and salinity of the nearshore waters off Oregon and Northern California. Specifically, temperature and salinity variations during summer and winter were ana1yzed from data gathered at shore stations along the coast and from hydrographic data collected within 25 nautical miles of shore....
    Resource Type:
    Dissertation
    Full Text:
    Current and that it may reach a width of 165 miles off Oregon. 1800 I70°W 1600 KUROSHIO ' NORTH

  • Rainfall over coastal waters of the Pacific Northwest

    Creator:
    Reed, Ronald Keith
    Abstract:
    The objective of this study was to ascertain the magnitude and distribution of rainfall over coastal waters of the northwestern United States and to compare values with those at nearby land stations. Precipitation was measured with gauges at Totem, rainfall amounts were assessed from weather reports at lightships off the...
    Resource Type:
    Masters Thesis
    Full Text:
    Astoria. 42 5. 2 Mean monthly frequency (%) of hours with precipitation of all categories at Tatoosh

  • Species specific phytoplankton production rates during a spring diatom bloom in Yaquina Bay, Oregon

    Creator:
    McMurray, Gregory R., 1925-
    Abstract:
    A simplified autoradiographic method for estimating species-specific phytoplankton production rates in mixed natural communities was evaluated in the laboratory and employed in the field. Laboratory experiments were designed to test the reliability and variability of the simplified method. Assays of ¹⁴C uptake by liquid scintillation spectrometry were used to evaluate...
    Resource Type:
    Dissertation
    Full Text:
    Pacific Ocean near the middle of the Oregon coast-line at 47°37' North latitude (Figure 1). The river

  • Shoreline changes due to jetty construction on the Oregon Coast

    Creator:
    Lizarraga Arciniega, Jose Roman
    Abstract:
    Patterns of beach erosion and accretion due to jetty construction are examined for the coast of Oregon. All jetty systems are included with the exception of those on the Columbia River, making a total of nine systems. All evidence indicates that these areas of the Oregon coast are experiencing a...
    Resource Type:
    Masters Thesis
    Full Text:
    Frequency and Velocity of Winds at Two Stations on the Oregon Coast (Cooper, 1958) 22 5 Discharges of the

  • The Erosion of Siletz Spit, Oregon

    Creator:
    Rea, Campbell Cary
    Abstract:
    Siletz Bay is a drowned river valley filled with Holocene alluvial and estuarine sediments and is separated from the ocean by a sand spit 3.8 km in length. Since the area was settled by white man in the 1890's, the bay has apparently experienced rapid siltation, due to increased farming...
    Resource Type:
    Masters Thesis
    Full Text:
    southern sand spit prevailed and the bay mouth was reduced to a narrow opening at the north end of the bay

  • Sediment sources and clay mineral distributions off the Oregon coast : evidence for a poleward slope undercurrent

    Creator:
    Karlin, Robert
    Resource Type:
    Masters Thesis
    Full Text:
    . Kuim Clay mineral analyses of surface sediments from the Oregon continental margin are combined with

  • Harbor dredging and benthic infauna : a case study

    Creator:
    Parr, Robert Alexander
    Abstract:
    This study of the immediate, localized effects of a small dredging operation on the benthic invertebrate community in the shipping channel of Coos Bay, Oregon, was designed: 1) to measure the extent of the physical removal of benthic macro- and meiofauna by hopper dredging; 2) to record the subsequent benthic...
    Resource Type:
    Masters Thesis
    Full Text:
    that contain large amounts of wood chips, Unfortunately, many wood chips remain after sieving at 0

  • The ghost shrimp, Callianassa californiensis Dana, 1854, in Yaquina Bay, Oregon

    Creator:
    McCrow, Lynne Tucker
    Abstract:
    The life cycle of Callianassa californiensis Dana, 1854, was studied in the tidal estuary, Yaquina Bay, Oregon. At this latitude it is largely restricted to intertidal sandy mudflats under predominately marine influence. Salinity and temperature appear to determine its distribution to a greater extent than does sediment type. Vertical movement...
    Resource Type:
    Masters Thesis
    Full Text:
    to very fine sand; the Sally' s Bend flats on the north side display sediments characteristic of the

  • Fine-scale time variations of rainfall

    Creator:
    Trump, Clifford Lyons
    Abstract:
    One-minute rainrates were measured during two winter rainy seasons in western Oregon to gain insights into the time-structure of Oregon rainstorms. The averages of three non-dimensional relative variance statistics were greater on the coast than inland. Rainrate distributions showed that a greater portion of the total rain fell, at higher...
    Resource Type:
    Masters Thesis
    Full Text:
    inserting periods of zero rainfall into a data record. 31 7 Average annual precipitation in western Oregon

  • Prediction of hazardous Columbia River bar conditions

    Creator:
    Enfield, David B.
    Abstract:
    In this study methods were developed for the prediction of wave conditions that are hazardous to navigation at river entrances, with emphasis on applicability to the Columbia River. There are two basic components to the prediction system: (1) a semi-automated spectral method for forecasting the significant height and average period...
    Resource Type:
    Dissertation
    Full Text:
    wave measurements at Newport~ Oregon. The hazard index is based on the probability of wave-breaking