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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

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

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

Along-coast variations of Oregon beach-sand compositions produced by the mixing of sediments from multiple sources under a transgressing sea

Creator:: Clemens, Karen E.
Abstract:: Heavy mineral compositions of sands from Oregon beaches, rivers and sea cliffs have been determined in order to examine the causes of marked along-coast variations in the beach-sand mineralogy. The study area extends southward from the Columbia River to the Coquille River in southern Oregon. The heavy-mineral compositions were determined...
Resource Type:: Masters Thesis
Full Text:: uplifted beach and dune sands. It is probable that the large headlands on the Oregon coast Figure 1

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:: , the study of Terich and Komar (1973, 1974) of the erosion of Bayocean Spit on the Oregon coast has

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:: _ Paul D. Komar Tillamook Bay is the second largest estuary on the Oregon coast, and concerns have

Laboratory and field investigations on the movement of sand tracer under the influence of water waves : ripple development and longitudinal spreading of tracer material

Creator:: Miller, Martin C.
Resource Type:: Dissertation
Full Text:: Oceanography Oregon State University Corvallis, Oregon 97331 ABSTRACT 2 Laboratory data on the geometry of

Sediment transport beneath an undular hydraulic jump

Creator:: Broome, Robert
Abstract:: Field observations are made of the formation of backwash ripples on the beachface, formed by undular hydraulic jumps generated by backwash down the beach face colliding with wave bores. Measured ripple wavelengths range from set averages of 48 to 70 cm. Within a particular set of ripples there is a...
Resource Type:: Masters Thesis
Full Text:: , Oregon. 2 2 An example of an undular hydraulic jump on a beach. 6 3 The three classes of hydraulic

ScholarsArchive@OSU

The Erosion of Siletz Spit, Oregon

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

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

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

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

Along-coast variations of Oregon beach-sand compositions produced by the mixing of sediments from multiple sources under a transgressing sea

Shoreline changes due to jetty construction on the Oregon Coast

Sediment accumulation and human impacts in Tillamook Bay, Oregon

Laboratory and field investigations on the movement of sand tracer under the influence of water waves : ripple development and longitudinal spreading of tracer material

Sediment transport beneath an undular hydraulic jump

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