Offshore sand sources for beach replenishment: Potential borrows on the continental shelf of the Eastern Gulf of Mexico
作者:
CharlesW. Finkl,
SyedM. Khalil,
JeffreyL. Andrews,
期刊:
Marine Georesources & Geotechnology
(Taylor Available online 1997)
卷期:
Volume 15,
issue 2
页码: 155-173
ISSN:1064-119X
年代: 1997
DOI:10.1080/10641199709379942
出版商: Taylor & Francis Group
关键词: bathymetric survey;beach erosion;chirp sonar;geophysical exploration;geotechnical analysis;seismic survey;subsea borrow area;vibrocoring
数据来源: Taylor
摘要:
Erosion of sandy beaches is a worldwide problem that elicits innovative geoengineer‐ing techniques to reduce adverse impacts of shoreline retreat. Beach replenishment has emerged as the “soft”; shore‐stabilization technique of choice for mitigating beach erosion. This method of shore protection involves the addition of sand to the littoral sediment budget for sacrificial purposes. Because inland sand sources are often uneconomical or impractical to use, and known nearshore sources are limited, finding adequate quantities of suitable sand on the inner continental shelf is often vital to beach replenishment projects. The technical studies of survey and materials analysis that identify and delineate usable sand sources are sometimes almost as expensive as small‐project dredging, pumping, and placing the sand on the beach as fill. Inadequate quantity or substandard quality of shelf sand, as well as often‐prohibitive overhead expenses, thus compel shoreline managers to seek suitable sand sources offshore.
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