Other ID: UCONN 84-1
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: western Long Island Sound, Connecticut, United States, North America, North Atlantic;
Principal Investigator(s): Stephen Colman
Affiliate Investigator(s): Ralph S. Lewis - CT Geological and Natural History Survey
Data Type(s): Seismics: Boomer, Seismics: Air Gun / Water Gun, Seismics: Bubble Gun, Seismics: Sparker, Seismics: Sub Bottom Profiler, Sonar: Sidescan, Location-Elevation: Navigation
Scientific Purpose/Goals: (1) Define geology and shallow structure of western Long Island Sound; (2) determine geologic framework and Quaternary development of study area; (3) identify and map potential geologic hazards; and (4) simultaneously use and compare two types of hydrophone/amplifier/graphic recorder systems to determine which system is most suitable for this type of survey.
Start Date: 1984-05-16
Start Port/Location: New Haven, CT
End Date: 1984-05-25
End Port/Location: New Haven, CT
Equipment Used: EG&G 234, Innerspace Technology 25-element hydrophone, Edo Western Sidescan and 2.5 kHz sub-bottom system, Loran-C
Information to be Derived: Morphology;
Summary of Activity and Data Gathered: Calm seas and few emergency course alterations allowed for consistent, well documented high-res seismic reflection data. In addition, the excellent resolution and penetration of the Innerspace hydrophone system, except in areas where gas deposits obscured the acoustic signal, produced clear, well-defined records from which the geology of western Long Island Sound can be ascertained. Original cruise plans called for the implementation of EDO Western sidescan sonar system to obtain sea-floor imagery. Unfortunately, the system malfunctioned the first sea day and was discontinued. Uniboom: 634 km.
Staff: David Mason, David Nichols, Stephen Colman, Gerald Edwards
Notes: Original Center People field contained: Steve Colman, geologist (May 16-17); Gerald Edwards, geologist (May 21-25); Dave Nichols, ET (May 16-25); David Mason, mech. tech. (May 16-25).
Poppe, L.J., McMullen, K. Y., Williams, S. J., Crocker, J. M., and Doran, E. F., 2008, Estuarine sediment transport by gravity-driven movement of the nepheloid layer, Long Island Sound: Geo-Marine Letters, v. 28 no. 4, doi: 10.1007/s00367-008-0118-2.
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, URL: http://woodshole.er.usgs.gov/openfile/of02-002/.