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Summary for Field Activity Number 1985-022-FA

Alternate Leg ID: AST 85-10

Area of Operations: Delaware Bay, Delaware, New Jersey, United States, North America, North Atlantic

Dates: July 07, 1985 to July 20, 1985

Objectives: To collect high-resolution seismic reflection profiles and sidescan sonar records to define the geologic and geophysical characteristics of the bottom and sub-bottom sediments in lower Delaware Bay. By analyzing these data we hope to determine (1) the shallow sub-bottom stratigraphy and the Holocene and pre-Holocene depositional history of the bay; (2) the types of bottom morphology; and (3) possible areas of sediment accumulation and erosion.

Type of Activity:

Information to be derived:

Summary: R/V ASTERIAS left Woods Hole, MA for Lewes, DE on July 7 with Dick Colburn and Ken Parolski aboard. Harley Knebel and Ron Circe drove to Lewes, DE on July 8, meeting ASTERIAS at the University of Delaware Marine Science Facility in the evening. Surveying within Delaware Bay began on July 9 and continued each day through July 18. During the survey, equipment malfunctions were few and of short duration, and only about 1.5 days were lost because of inclement weather. The ship returned each night to Lewes, DE where berthing space and other logistical support were graciously provided by the University of Delaware Marine Science Facility. On the evening of July 12, Harley Knebel got off ASTERIAS, turning the Chief Scientists duties over to Ron Circe. Visitors aboard the boat during the survey included: Tom Pickett and Dick Benson, Delaware Geological Survey (July 11); Jeff Williams, USGS, and S.R. Khan, Bangladesh (July 15); and David Hall, New Jersey Geological Survey (July 16). Wayne Newell and Byron Stone, USGS, visited the boat and USGS personnel on the evening of July 9. On July 19, ASTERIAS departed for Woods Hole with Dick Colburn and Ron Circe aboard; Ken Parolski returned to Woods Hole by car. The ASTERIAS arrived in Woods Hole on the morning of July 20. Uniboom records: 592 line km; Klein sidescan sonar data: 592 line km.

USGS Project Number: 9470-02421

Contact: Ron Circe ()

InfoBank: uses the identifier A-10-85-DL. Visit this site for more information.

Map for Area of Operations :

Map of field activity boundary.

Platform Info:
photo of ASTERIAS
ASTERIAS

The following materials for this field activity are available in the Information Archives:

Paper seismic/sidescan bottom profiles:

Inventory #LinesFolderStart TimeEnd TimeProfile TypeRemarks
019001-3 00108:05 07/09/198518:20 07/09/1985 UNI-
019014-7 00207:47 07/10/198516:45 07/11/1985 UNI-
019028-13 00308:48 07/12/198516:00 07/13/1985 UNI-
0190314-17 00408:52 07/14/198514:16 07/15/1985 UNI-
0190418-22 00508:20 07/16/198512:27 07/18/1985 UNI-
019051,1A,1B,2 00109:36 07/09/198513:00 07/09/1985 SSS-
019062,3 00213:03 07/09/198518:20 07/09/1985 SSS-
019074 00307:47 07/10/198512:11 07/10/1985 SSS-
019085,6 00412:30 07/10/198510:40 07/11/1985 SSS-
019096 00510:44 07/11/198516:10 07/11/1985 SSS-
019107,8 00616:13 07/11/198512:47 07/12/1985 SSS-
019119-11 00712:53 07/12/198510:15 07/13/1985 SSS-
0191211-13 00810:17 07/13/198514:55 07/13/1985 SSS-
0191313,14A 00915:35 07/13/198514:58 07/14/1985 SSS-
0191414A,15 01013:00 07/14/198516:58 07/14/1985 SSS-
0191516,17 01107:54 07/14/198512:20 07/15/1985 SSS-
0191617,18 01212:30 07/15/198510:30 07/16/1985 SSS-
0191718,19 01310:32 07/16/198514:35 07/16/1985 SSS-
0191821,22 01407:14 07/18/198510:40 07/18/1985 SSS-
0191922 01510:45 07/18/198512:27 07/18/1985 SSS-
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