Other ID: 94-18
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Principal Investigator(s): David Twichell
Affiliate Investigator(s): Neal W. Driscoll - Lamont-Doherty Earth Observatory
Data Type(s): Sampling: Biology, Sampling: Geology, Imagery: Photo, Location-Elevation: Navigation, Sonar: Sidescan, Seismics: Sub Bottom Profiler, Sonar: Single Beam
Scientific Purpose/Goals: Re-survey a sidescan sonar survey from 1991 to document changes inflicted by Hurricane Bob and 2 major winter storms; build a sonar mosaic; obtain camera tows, box cores and grab samples.
Start Date: 1994-07-29
Start Port/Location: Block Island, RI
End Date: 1994-08-08
End Port/Location: Block Island, RI
Equipment Used: Box corer, Camera- deep sea, DGPS, Klein 531 sidescan, Q-MIPS sidescan sonar system, ORE 140 transceiver/1036 transducer sub-bottom profiler, ODOM 200 kHz depth recorder, Grab sampler - Van Veen
Information to be Derived: Sea floor map;
Summary of Activity and Data Gathered: Sidescan sonar: 124 km sq; 3.5 kHz sub-bottom: 884 km; Digital bathymetry: 884 km (Contact USGS); Camera tows: 12; 35 mm slides; Box cores: 23; Van Veen grabs: 211.
Staff: Barry Irwin, David Nichols, David Twichell, Eric A. Schmuck
Block Island Sound, Rhode Island, United States, North America, North Atlantic;