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Filtering by: Alt title Beach erosion on Siletz Spit, Oregon Remove constraint Alt title: Beach erosion on Siletz Spit, Oregon Degree Field Oceanography Remove constraint Degree Field: Oceanography

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  • 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:
    ) Title: THE EROSION OF SILETZ SPIT, OREGON Abstract approved: Siletz Bay is a drowned ri;r valley

  • The spring 1976 erosion of Siletz Spit, Oregon, with an analysis of the causative wave and tide conditions

    Creator:
    McKinney, Barbara Ann
    Abstract:
    During the period 1970-76, Siletz Spit on the mid-Oregon coast has suffered foredune erosion. This erosion is associated with high wave conditions along the coast, produced by intense storms in the North Pacific. During the winter of 1972-73 and during January through March 1976 the erosion was particularly severe. The...
    Resource Type:
    Masters Thesis
    Full Text:
    unconsolidated beach and dune sands found chiefly on sand spits. The foredunes on Siletz Spit on the mid-Oregon

  • Coastal landslides in northern Oregon

    Creator:
    North, William Benjamin
    Abstract:
    Landsliding is a significant contributor to continuous erosion of the 150-mile northern Oregon coast. Direct loss of land to the sea by landslides occurs along 47 percent of the coast. The remaining 53 percent has minor shifting of sand along depositional areas such as spits and dunes. These minor movements...
    Resource Type:
    Masters Thesis
    Full Text:
    River. Severe erosion due to a decrease in sand supply on Bayocean Beach has resulted from the

  • Shoreline rhythmicity on a natural beach

    Creator:
    Garrow, Holly C.
    Resource Type:
    Masters Thesis
    Full Text:
    particular interest are the studies of Rea, documenting erosion On Siletz Spit during the winter of 1972-73

  • Beach foreshore response to long-period waves in the swash-zone

    Creator:
    Howd, Peter A.
    Abstract:
    A field experiment designed to test the hypothesis that infragravity and lower frequency waves influence the patterns of erosion and deposition on the beach foreshore has been carried out. The data show coherent fluctuations in the foreshore sediment level which can be related to low frequency wave motions. The fluctuations...
    Resource Type:
    Masters Thesis
    Full Text:
    infragravity and lower frequency waves influence the patterns of erosion and deposition on the beach foreshore

  • Beach profile changes and onshore-offshore sand transport on the Oregon coast

    Creator:
    Aguilar Tunon, Nicolas A.
    Abstract:
    Two beaches with significant differences in grain size and thus in beach profile morphology and response to wave conditions were studied on the Oregon coast. Gleneden Beach, just south of Siletz Spit and Lincoln City, has a median grain size of 0.36 mm (medium sand) and a steep beach face...
    Resource Type:
    Masters Thesis
    Full Text:
    response to wave conditions were studied on the Oregon coast. Gleneden Beach, just south of Siletz Spit

  • Lake level regulation, shoreline erosion and shore protection : Flathead Lake, Montana

    Creator:
    Lorang, Mark
    Abstract:
    Concern regarding increased coastal erosion has heightened amid growing acceptance of global warming and associated sea-level rise. This study examines shoreline erosion in Flathead Lake, Montana due to five decades of artificially elevated lake levels. It provides a model to investigate coastal erosion associated with sea-level rise. The natural water...
    Resource Type:
    Masters Thesis
    Full Text:
    III. CHAPTER THREE: THE VARIABIUTY OF SHORELINE EROSION AND 49 ACCRETION WIThIN A BEACH COMPARTMENT ON

  • Dune erosion models and swash zone kinematics from remote video observations

    Creator:
    Palmsten, Margaret L.
    Abstract:
    The subaerial beach, composed of sand dunes and the foreshore, provides a natural buffer zone between vulnerable land and the dissipation of storm wave energy due to wave breaking. The natural beauty of this region is attractive to people, and as a result, significant investment has been placed in this...
    Resource Type:
    Dissertation
    Full Text:
    . Traditional surveying techniques for measuring dune erosion require access to the beach on foot, and remote

  • Processes of sea-cliff erosion on the Oregon coast : from neotectonics to wave run-up

    Creator:
    Shih, Shyuer-ming
    Abstract:
    Sea-cliff erosion is a significant problem along the Oregon coast in that many communities have been built on terraces affected by bluff retreat. There is considerable coast-wide variability in the rates of cliff erosion. This variability is attributed in part to tectonic activity that is causing differential interseismic uplift along...
    Resource Type:
    Dissertation

  • The sediment response of a dissipative beach to variations in wave climate

    Creator:
    Haxel, Joseph H.
    Abstract:
    Using wave and wind data from nearby buoys and gauges, real time kinematic global positioning system (RTK-GPS) and light detection and ranging (lidar) topographic survey data, and a robust video record, we have quantified the Large Scale Coastal Behavior (LSCB) of a dissipative end member beach in the Pacific Northwest....
    Resource Type:
    Masters Thesis
    Full Text:
    study of Agate Beach from 1992 - 2001 reveals important observations of beach behavior on temporal and