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Tracklines of a multibeam survey of the sea floor southwest of Montauk Point, New York, in 1998 (polyline shapefile, geographic, WGS 84)

Dates

Publication Date
Start Date
1998-11-07
End Date
1998-11-08

Citation

Butman, Bradford, Danforth, W.W., Clark, J.E.H., Signell, R.P., and Schwab, W.C., 2016, Bathymetry and backscatter intensity of the sea floor south of Long Island, New York: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F7Z899GG.

Summary

Surveys of the bathymetry and backscatter intensity of the sea floor south of Long Island, New York, were carried out in November 1998 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to explore the bathymetry and backscatter intensity of the sea floor in several areas off the southern coast of Long Island along the 20-meter isobath. Survey areas offshore of Fire Island Inlet, Moriches Inlet, Shinnecock Inlet, and southwest of Montauk Point were about 1 kilometer (km) wide and 10 km long. The area was mapped by the U.S. Geological Survey with support from the Canadian Hydrographic Service and the University of New Brunswick.

Contacts

Attached Files

Click on title to download individual files attached to this item.

mont_nav_browse.jpg
“Browse graphic of trackline navigation.”
thumbnail 268.93 KB image/jpeg
mont_nav.zip
“Download of data and metadata.”
666.05 KB application/zip

Purpose

This data release makes multibeam echosounder data from the 1998 survey of the sea floor southwest of Montauk Point, New York, available in digital form. The navigation shapefile shows how the survey was carried out along tracklines running northeast-southwest approximately parallel to the local bathymetry and spaced about 100 m apart. The tracklines also can be used to identify data collected directly below the ship (at nadir).

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