Geological interpretation of a low-backscatter anomaly found on the New Jersey continental margin
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.
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Digital Object Identifier (DOI)
Edward M. Sweeney, James V. Gardner, Joel E. Johnson, Larry A. Mayer, Geological interpretation of a low-backscatter anomaly found on the New Jersey continental margin, Marine Geology, Volumes 326–328, 1 October 2012, Pages 46-54, ISSN 0025-3227, http://dx.doi.org/10.1016/j.margeo.2012.08.007.