Bathymetry of the Historic Area Remediation Site in 1998 (3-m resolution Esri binary grid and 32-bit GeoTIFF, Mercator, WGS 84)

Online link https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_F74B2ZGX/hars1998_3m_meta.faq.html
Description Surveys of the bathymetry and backscatter intensity of the sea floor of the Historic Area Remediation Site (HARS), offshore of New York and New Jersey, were carried out in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The objective of the multiple echosounder surveys was to map the bathymetry and surficial sediments over time as dredged material was placed in the HARS to remediate contaminated sediments. Maps derived from the multibeam surveys show sea-floor bathymetry, shaded-relief bathymetry, and backscatter intensity (a measure of sea-floor texture and roughness) at a spatial resolution of 3 meters. The area was mapped by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers and with support from the Canadian Hydrographic Service and the University of New Brunswick. [More]
Originators U.S. Geological Survey; U.S. Army Corps of Engineers; Butman, Bradford; Danforth, William W.; Hughes Clark, John E.; and Signell, Richard P.
Field activities 1998-015-FA

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Browse graphic of the conceptual model of the karst subterranean estuary in an unconfined coastal aquifer setting (top). Mixing between freshwater and marine-derived saline groundwater occurs within the aquifer’s porous geologic setting, including its sinkholes and cave conduits. Mixing zones were accessed through flooded cave networks to obtain high-resolution vertical profiles of chemical parameters (bottom box). Samples were collected with 12-cm spacing in (a) January 2015 and (b) January 2016, as well as with the 2.5-cm spacing (c) in January 2016. The blue line is the sulfate to chloride ratio (0.0515) of the regional seawater.
Browse graphic of the bathymetry data.
Browse graphic of the bathymetry data.