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Filtering by: Alt title Beach erosion on Siletz Spit, Oregon Remove constraint Alt title: Beach erosion on Siletz Spit, Oregon Resource Type Masters Thesis Remove constraint Resource Type: Masters Thesis

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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

  • Analysis of rip current embayments on the Oregon coast

    Creator:
    Dalon, Matthew M.
    Abstract:
    Understanding the past, present, and future behavior of our nation's shorelines is vital for sensible coastal management. Localized areas of erosion, termed "erosional hot spots", can shift the shoreline landward threatening coastal infrastructure (Kraus and Galgano, 2001; Stauble and Gravens, 2004; McNinch, 2004). One specific type of erosional hot spot...
    Resource Type:
    Masters Thesis
    Full Text:
    damage occurred on the Siletz Spit located on the central Oregon coast. During the winter of 1972-73 a

  • 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

  • Seasonal variations [in] tidal dynamics, water quality, and sediments in the Siletz Estuary

    Creator:
    Rauw, Charles Irving
    Abstract:
    The Siletz Estuary was studied in 1973 to determine seasonal variations in tidal dynamics, water quality, and sediments. Tidal ranges and times were measured and compared to predicted values at two positions within the bay. Tidal ranges and times were analyzed to determine the dampening and phasing conditions within the...
    Resource Type:
    Masters Thesis
    Full Text:
    Spit. In 1962, development of the present beach community of Salishan was started. The Siletz Keys

  • 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

  • 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:
    Management presented on June 4, 2009. Title: Patterns of Sediment Accumulation in the Siletz River

  • 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