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Summary Information for Field Activity 1981-032-FA

Area of Operations: Block Island Sound, Rhode Island, Connecticut, Long Island Sound, United States, North America, North Atlantic

Dates: September 10, 1981 to September 18, 1981

Chief scientist: Sally Needell

   Ralph Lewis - CT DEP, LISRC

Objectives: Define the geology and shallow structure of Block Island Sound and eastern Long Island Sound; determine the geologic framework and Quaternary development of Block Island Sound; identify and map potential geologic hazards; and complement a similar study in Rhode Island Sound.

Type of Activity: Seismic profiling; Sea floor mapping;Sea floor mapping

Information to be derived: Sea floor map; Morphology;

Summary: High-resolution seismic reflection profiling: 702 km; Sidescan sonar recording: 402 km.

Contact: Sally Needell ()

InfoBank: uses the identifier A-2-81-RI. Visit this site for more information.

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Click to get Google Software - Download 81032.kml to view this field activity in Google Earth

Platform Info:

Publications resulting from these data

Poppe, L.J., Paskevich, V.F., Lewis, R.S., and DiGiacomo-Cohen, M.L.,2002, Geological framework data from Long Island Sound, 1981-1990; a digital data release: U.S. Geological Survey Open-File Report 02-002, DVD-ROM. (Also available at

Needell, Sally W., and Lewis, Ralph S.,1982, High-resolution seismic-reflection profiles and sidescan-sonar records collected on Block Island Sound by U.S. Geological Survey, R/V ASTERIAS Cruise AST 81-2: U.S. Geological Survey Open-File Report 82-322, 2 p.. (Available as a PDF version)

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