Center Principal and Affiliate Principal:
(if any)
Sally Wood Needell
Ralph Lewis - CT DEP
Area of Operations:
Eastern Long Island Sound, Block Island Sound
Bounding Coordinates:
North:
41.20
South:
41.0
West:
-72.75
East:
-71.5
Start and End Dates:
Sept 8, 1982 to Sep 18, 1982
Start and End Ports:
from Woods Hole, MA to Block
Island, RI
Number of Days at Sea:
11
Cruise Objectives:
Define the geology and shallow structure of eastern Long Island
Sound
Determine the geologic framework and Quaternary development of the study
area
Identify and map potential geologic hazards
Test the 300 J pressurized minisparker across Block Island Sound and compare records with Uniboom records from ASTERIAS 81-2 Block Island Sound cruise, September 1982.
Scientific Party (USGS):
Sally Needell - Chief Scientist
Jack Connell - ET
Scientific Party (affiliate):
Ralph Lewis - CT DEP, geologist
Scientific Equipment:
EG&G Uniboom seismic profiling system
EPC recorder model 4603 (and EPC 4100
spare)
300 J pressurized minisparker
Hewlett-Packard Instrumentation recorder, (Uniboom and minisparker
only)
Texas Instruments Silent 700 ASP terminal
Northstar LORAN-C navigation system
EDO Western sidescan sonar system.
Navigation techniques used:
Loran-C
Cruise Funding Source:
Project Title:
New England Coastal Geology
Contract:
Remarks:
Summary - Despite numerous equipment failures during the first 4 days of the survey, the Uniboom data were very good (excellent resolution and good penetration) except in areas underlain by gas which attenuated the signal. Sidescan sonar records were satisfactory. Records collected in Block Island Sound using the minisparker system were compared to former Uniboom records. The sparker records were found to be inferior in resolution and penetration.
Cruise
Report
