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Tracklines of a multibeam survey of the sea floor in the Historic Area Remediation Site in 1996 (polyline shapefile, geographic, WGS 84)

Dates

Publication Date
Start Date
1996-11-23
End Date
1996-11-27

Citation

Butman, Bradford, Danforth, W.W., Clarke, J.E.H., and Signell, R.P., 2017, Bathymetry and backscatter intensity of the sea floor of the Historic Area Remediation Site in 1996, 1998, and 2000: U.S. Geological Survey data release, https://doi.org/10.5066/F74B2ZGX.

Summary

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 [...]

Contacts

Attached Files

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Hars1996Nav_browse.jpg
“Browse graphic of data.”
thumbnail 205.08 KB
Hars1996Nav.zip
“Download of data and metadata.”
228.51 KB

Purpose

The navigation polyline shapefile records the trackline followed by the Canadian Coast Guard ship Frederick G. Creed in the 1996 survey of the Historic Area Remediation Site. The tracklines can be used to identify line spacing, trackline orientation, and the location of data collection. The 1996 survey was carried out along tracklines running north-south and spaced about 100 m apart. The attributes record the latitude, longitude, date, and time at the start of each line.

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