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Dissertation/Thesis Abstract

Reassessment of Geomorphic Features on the Continental Shelf off of Watch Hill, Fire Island National Sea Shore, NY
by Lashley, Justin Michael, M.S., State University of New York at Stony Brook, 2018, 44; 10842942
Abstract (Summary)

The United States Bureau of Ocean Energy Management (BOEM)’s Sandy Needs Assessment collected geophysical and geotechnical data, related to beach nourishment activities, along the continental shelf south of Long Island between 2015–2017 in an area offshore the Fire Island National Sea Shore, near Watch Hill, NY. This new geological and geophysical data provides evidence of continuous and ongoing sand transport offshore of Fire Island National Sea Shore. New stratigraphic evidence shows the evolution, migration and erosion of shore-oblique sand ridges formed from the reworking of glacial outwash sand consistent with a conceptual process model. Three separate ridge features are related to each other with evidence of direct ridge migration in the region. Outwash fans and deltas likely provided the cores of mesoscale submarine ridges n the study area. Subsequent episodes of ridge erosion remobilized sand to feed the growth of ridges further west. The possibility of natural transport process actively delivering sand to the shore remains, but is not identified, and will require further work before these ridges can be sustainably utilized in nourishment activities.

Indexing (document details)
Advisor: Flood, Roger D.
Commitee: Bokuniewicz, Henry, Wilson, Robert
School: State University of New York at Stony Brook
Department: Marine and Atmospheric Science
School Location: United States -- New York
Source: MAI 58/05M(E), Masters Abstracts International
Subjects: Geophysics, Marine Geology, Sedimentary Geology
Publication Number: 10842942
ISBN: 978-1-392-06190-9
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