"Geological interpretation of a low-backscatter anomaly found on the Ne" by Edward M. Sweeney, James V. Gardner et al.
 

Geological interpretation of a low-backscatter anomaly found on the New Jersey continental margin

Abstract

An enigmatic low-backscatter, acoustic anomaly occurs on the New Jersey continental margin between Hudson and Wilmington Canyon channels. The presence of the low-backscatter anomaly, as seen with 6.5- and 12-kHz data, indicates a change in the physical properties of the seafloor or near sub-surface. Analyses of seafloor and sub-surface acoustic data with previously collected sediment cores suggest the low-backscatter feature corresponds to an outcrop of older strata uncovered by erosion and non-deposition by the Western Boundary Undercurrent (WBUC). The decrease in backscatter strength is enhanced by the presence of gas in the sub-surface sediments found in the buried Chesapeake Drift.

Department

Center for Coastal and Ocean Mapping, Earth Sciences

Publication Date

10-1-2012

Volume

326-328

Journal Title

Marine Geology

Pages

46-54

Publisher

Elsevier

Digital Object Identifier (DOI)

10.1016/j.margeo.2012.08.007

Document Type

Journal Article

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