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Offshore sand-shoal development and evolution of Petit Bois Pass, Mississippi-Alabama Barrier Islands, Mississippi, USA

By:
, , , ,
Edited by:
Julie D. Rosati, Ping Wang, Tiffany M. Roberts
DOI: 10.1142/9789814355537_0163

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Abstract

Assessment of recently collected geophysical and sediment-core data identifies an extensive shoal field located off Dauphin and Petit Bois Islands. The shoals are the product of Pleistocene fluvial deposition and Holocene marine-transgressive processes, and their position and orientation oblique to the modern shoreline has been stable over the past century. The underlying stratigraphy has also influenced the evolution of the barrier platform and inlets. Buried distributary channels bisect the platform, creating erosion hotspots that breach during intense and repeated storms. Inlet growth inhibits littoral transport, and over time, reduces the down-drift sand supply. These relations demonstrate the role of the antecedent geologic framework on morphologic evolution. This study is part of the USGS Northern Gulf of Mexico Ecosystem Change and Hazard Susceptibility Project and the USACE Mississippi Coastal Improvements Program. These projects produced a wealth of information regarding coastal geology, geomorphology, and physical resources; some of the initial results are presented here.

Geospatial Extents

Additional Publication Details

Publication type:
Book
Publication Subtype:
Conference publication
Title:
Offshore sand-shoal development and evolution of Petit Bois Pass, Mississippi-Alabama Barrier Islands, Mississippi, USA
DOI:
10.1142/9789814355537_0163
Year Published:
2011
Language:
English
Publisher:
World Scientific
Contributing office(s):
St. Petersburg Coastal and Marine Science Center
Description:
14 p.
Larger Work Type:
Book
Larger Work Subtype:
Other Government Series
Larger Work Title:
The Proceedings of the Coastal Sediments 2011
First page:
2170
Last page:
2183
Number of Pages:
14
Conference Title:
Coastal Sediments 2011
Conference Location:
Miami, FL
Conference Date:
2011-04-30T00:00:00
Country:
United States
State:
Alabama;Mississippi
Other Geospatial:
Dauphin Island;Gulf Of Mexico;Petit Bois Island;Petit Bois Pass