Tracklines of a multibeam survey of the sea floor in the Historic Area Remediation Site in 1998 (polyline shapefile, geographic, WGS 84)

• Main Authors: U.S. Geological Survey, U.S. Army Corps of Engineers
• Format: Dataset
• Language: unknown
• Published: USGS Science Data Catalog 2017
• Subjects: tracklines; navigation; polyline shapefile; multibeam; sea floor; sea floor mapping; Simrad EM1000; Canadian Coast Guard ship (CCGS) Frederick G. Creed; WHCMSC field activity 1998-015-FA; Woods Hole Coastal and Marine Science Center (WHCMSC); Coastal and Marine Geology Program (CMGP); U.S. Geological Survey (USGS); Canadian Hydrographic Service (CHS); University of New Brunswick (UNB); U.S. Army Corps of Engineers (USACE); Open-File Report 00-503; oceans; location; Historic Area Remediation Site (HARS); Hudson Shelf Valley; New York Bight; Middle Atlantic Bight; New York; New Jersey; North Atlantic Ocean; Hudson; North Atlantic
• Online Access: https://search.dataone.org/view/aeeea8a4-fcc5-4230-be3d-bc33e808e570

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.