Search Constraints

Start Over
Filtering by: Subject Sediments (Geology) -- Oregon Remove constraint Subject: Sediments (Geology) -- Oregon Academic Affiliation College of Oceanic and Atmospheric Sciences Remove constraint Academic Affiliation: College of Oceanic and Atmospheric Sciences

Search Results

  • Patterns of sediment accumulation in the Siletz River Estuary, Oregon

    Creator:
    Pakenham, Anna
    Abstract:
    Anecdotal evidence suggests many Pacific Northwest estuaries are filling with sediment due to historical logging activities in upstream watersheds. Using the Siletz River estuary as a case study, this research began by analyzing timber harvest and discharge records of the Siletz River watershed, and found that increased timber harvest coincides...
    Resource Type:
    Masters Thesis
    Full Text:
    Patterns of Sediment Accumulation in the Siletz River Estuary, Oregon by Anna Pakenham A

  • Mapping and lithologic interpretation of the Territorial Sea, Oregon

    Creator:
    Agapito, Melinda T.
    Abstract:
    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 that will be used in the identification, evaluation and design of marine reserves...
    Resource Type:
    Masters Thesis
    Full Text:
    Oregon. The largest of these synclines are filled with sediment, and mostly outside the territorial sea

  • Holocene and latest Pleistocene paleoceanography of the northeast Pacific and its relationship to climate change in the Pacific Northwest

    Creator:
    Sabin, Ann Louise
    Abstract:
    Northeast Pacific Ocean sediments were analyzed to determine the past relationship between northeast Pacific sea surface conditions and the climate on the adjacent continent, the Pacific Northwest of North America. Studies of modern ocean-atmosphere interactions demonstrate the significant effect sea surface conditions and atmospheric circulation in the Northeast Pacific Ocean...
    Resource Type:
    Masters Thesis

  • Swash zone sediment suspension and transport

    Creator:
    Puleo, Jack A.
    Abstract:
    Swash zone processes are of significant importance to foreshore morphologic change. This thesis addresses the importance of the uprush and backwash fluid motions and flow duration effects to the resulting sediment transport. The analysis relates the field observations to well known sediment transport formulations as well as investigates the importance...
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Oceanography presented on July 14, 1998 . Title: Swash Zone Sediment Suspension and

  • An X-radiographic study of the October 2000 Po River flood deposit, Italy

    Creator:
    Hunt, Louise
    Abstract:
    During October 2000 the Po River, Italy's largest river, experienced a historically significant flood, producing a deposit on the adjacent prodelta. In December 2000 an event-response study of the deposit was conducted, and during the ensuing 16 months three additional sampling cruises were conducted to study the subsequent evolution of...
    Resource Type:
    Masters Thesis
    Full Text:
    environment allowing immediate deposition of Po River sediment load with little dispersal or resuspension

  • Hydrothermal links between ocean plateau formation and global anoxia at the Cenomanian-Turonian boundary

    Creator:
    Snow, Laura J.
    Abstract:
    The Cretaceous was a period of extreme climatic conditions accompanied by major perturbations in ocean-atmosphere biogeochemical cycles. One of the most intriguing features is the sporadic interruption of normal marine pelagic sediment deposition by organic rich sediments deposited during oxygen-deficient conditions (ocean anoxic events OAEs). A current model for the...
    Resource Type:
    Masters Thesis
    Full Text:
    interruption of normal marine pelagic sediment deposition by organic rich sediments deposited during oxygen

  • A seasonal study of sediment reworking by Neotrypaea californiensis in Yaquina Bay, Oregon

    Creator:
    Fritz, Cara E.
    Abstract:
    A year-long field study was undertaken to investigate the influence of a number of physical and biological factors, specifically temperature, organic carbon content, and shrimp population dynamics on sediment reworking rates by the ghost shrimp Neotrypaea calforniensis. Because of its role as a structuring agent in estuaries along the West...
    Resource Type:
    Masters Thesis
    Full Text:
    Seasonal Study of Sediment Reworking by Neotrvvaea califomiensis in Yaquina Bay, Oregon. Abstract

  • Sediment accumulation and human impacts in Tillamook Bay, Oregon

    Creator:
    Styllas, Michael N.
    Abstract:
    Tillamook Bay is the second largest estuary on the Oregon coast, and concerns have been raised whether human induced impacts have been responsible for the perceived increase in sedimentation rates during the past century. Major land-use practices within the five watersheds of the Bay include logging, forest fires, the construction...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Sediment Accumulation and Human Impacts in Tillamook Bay. Oregon. Abstract approved:. __