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Oregon Coast Shoreline Changes Due To Jetties
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Book Synopsis Shoreline Changes Due to Jetty Construction on the Oregon Coast by : J. R. Lizarraga-Arciniega
Download or read book Shoreline Changes Due to Jetty Construction on the Oregon Coast written by J. R. Lizarraga-Arciniega and published by . This book was released on 1975 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 seasonal reversal in the sand drift, but with a zero or near zero net drift over a several years time span. Thus, shoreline changes resulting from jetty construction are not the usual examples of jetties blocking a net drift as found in southern California and elsewhere. In general, accretion of the shoreline took place adjacent to the jetties following their construction, both to the north and south. This accretion resulted mainly from the embayment formed between the jetty and the pre-jetty shoreline, the embayment becoming filled until the shoreline is straight and again in equilibrium with the waves such that there is a zero net sand drift. In some cases, as at the entrance to Yaquina Bay, the jetties are oblique to the trend of the shoreline and so produced a protected zone from the waves where accretion could occur. Sand for the accretion adjacent to the jetties was derived from beach erosion at greater distances from the jetties. The severity of the erosion depended on the total amount of sand required for the beach accretion to a new equilibrium, and the length of beach that was undergoing erosion. When only a short stretch of beach occurs to one side of the jetties, as at Bayocean Spit, then the resulting erosion was particularly severe, in that case leading to the breaching of the spit. A computer model is developed to simulate the shoreline changes that occurred following construction of the jetties on the Siuslaw River mouth. The model demonstrates deposition next to the jetty to fill the embayment created by the jetty, and erosion at greater distances from the jetty. The shoreline advances of the model agreed closely with the actual shoreline changes found in surveys following jetty construction.
Book Synopsis Oregon Coast Shoreline Changes Due to Jetties by : Paul D. Komar
Download or read book Oregon Coast Shoreline Changes Due to Jetties written by Paul D. Komar and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effectiveness of Spur Jetties at Siuslaw River, Oregon by : Cheryl E. Pollock
Download or read book Effectiveness of Spur Jetties at Siuslaw River, Oregon written by Cheryl E. Pollock and published by . This book was released on 1995 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effectiveness of Spur Jetties at Siuslaw River, Oregon by :
Download or read book Effectiveness of Spur Jetties at Siuslaw River, Oregon written by and published by . This book was released on 1995 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis National Assessment of Shoreline Change by :
Download or read book National Assessment of Shoreline Change written by and published by . This book was released on 2006 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes Due to Jetties at Tillamook Bay, Oregon by : Paul D. Komar
Download or read book Changes Due to Jetties at Tillamook Bay, Oregon written by Paul D. Komar and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oregon's Ever-changing Coastline by : Barbara A. Katz
Download or read book Oregon's Ever-changing Coastline written by Barbara A. Katz and published by . This book was released on 1977 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Impacts of Minor Shoreline Structures on the Coastal Environment by : Beak Consultants (Portland, Or.)
Download or read book Biological Impacts of Minor Shoreline Structures on the Coastal Environment written by Beak Consultants (Portland, Or.) and published by . This book was released on 1980 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Shoreline Changes of the Oregon Coast by : J. E. Stembridge
Download or read book Recent Shoreline Changes of the Oregon Coast written by J. E. Stembridge and published by . This book was released on 1976 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent efforts to determine worldwide patterns of shoreline change have been stimulated by growing property losses from such coastal problems as erosion, flooding, and storm surges. Much of the damage stems directly from the growing intensity of construction and development along coastlines, among the most hazardous of the world's environments. But losses in many locations have been inexplicably large, raising speculation that changing patterns of shoreline erosion may be partially responsible. Although the 500-kilometer-long Oregon coast has been classified as retrograding-submergent and displays landforms deserving of such a classification, measurable retrograding within the past century has been confined to a relatively small part of the shoreline. Comparison of early maps and 1939 air photos with more recent imagery indicates that most of the sandy shore has been stable, with some evidence of isolated prograding.
Book Synopsis Rogue River, Ocean Dredged Material Disposal Site (ODMDS) Designation by :
Download or read book Rogue River, Ocean Dredged Material Disposal Site (ODMDS) Designation written by and published by . This book was released on 1991 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Ecological Characterization of the Pacific Northwest Coastal Region by :
Download or read book An Ecological Characterization of the Pacific Northwest Coastal Region written by and published by . This book was released on 1981 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Ecological Characterization of the Pacific Northwest Coastal Region: Conceptual model by :
Download or read book An Ecological Characterization of the Pacific Northwest Coastal Region: Conceptual model written by and published by . This book was released on 1980 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Models in Geomorphology by : Michael J. Woldenberg
Download or read book Models in Geomorphology written by Michael J. Woldenberg and published by Routledge. This book was released on 2020-05-10 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, first published in 1985, arises from the 14th Binghamton Geomorphology Symposium. The chapters here illustrate the use of models in various areas of research in geomorphology.
Download or read book Technical Report CERC written by and published by . This book was released on 1983 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Memodrandum by : Waterways Experiment Station (U.S.)
Download or read book Technical Memodrandum written by Waterways Experiment Station (U.S.) and published by . This book was released on 1995 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Ecological Characterization of the Pacific Northwest Coastal Region: Characterization atlas-regional synopsis by :
Download or read book An Ecological Characterization of the Pacific Northwest Coastal Region: Characterization atlas-regional synopsis written by and published by . This book was released on 1980 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Ecological Characterization of the Pacific Northwest Coastal Region: Data source appendix by :
Download or read book An Ecological Characterization of the Pacific Northwest Coastal Region: Data source appendix written by and published by . This book was released on 1980 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
