Title

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.

Publication Date

10-1-2012

Journal or Conference Title

Marine Geology

Volume

326-328

Pages

46-54

Publisher

Elsevier

Digital Object Identifier (DOI)

10.1016/j.margeo.2012.08.007

Document Type

Journal Article