Coastal evolution and sediment budget at the mouth of the Columbia River, USA

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Abstract

The coastal morphology of the Mouth of the Columbia River (MCR) has changed dramatically over the past century. Since the construction of jetties in 1914 and 1917, the inlet deepened and stabilized, the outer ebb delta migrated northward and offshore several kilometers, and the adjacent shorelines to the north and south prograded several hundreds of meters. Recently, high rates of erosion along these adjacent shorelines affecting parklands have raised questions about the cause of the erosion. The purpose of the sediment budget analysis presented here is to address these questions by quantitatively examining the links between the morphology change of the shoreline and the ebb delta and historical changes in local and regional sediment supply.

Study Area

Publication type Conference Paper
Publication Subtype Conference Paper
Title Coastal evolution and sediment budget at the mouth of the Columbia River, USA
DOI 10.1061/40566(260)84
Year Published 2001
Language English
Publisher American Society of Civil Engineers
Contributing office(s) Pacific Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center
Description 10 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Coastal dynamics '01
First page 818
Last page 827
Conference Title Fourth Conference on Coastal Dynamics
Conference Location Lund, Sweden
Conference Date June 11-15, 2001
Country United States
State Oregon, Washington
Other Geospatial Columbia River
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