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Summary for Field Activity Number 1990-026-FA

Alternate Leg ID: OC222

Area of Operations: Continental Slope off New Jersey, Deep Water Dump Site DWDS 106, southern flank of Georges Bank, United States, North America, North Atlantic

Dates: August 02, 1990 to August 07, 1990

Objectives: Recover two subsurface moorings from the dump site which were deployed in September 1989. Collect sediment samples for studies of benthic infauna, microbiology, heavy metal and organic geochemistry. Overall objective of the sampling is to extend our study (initial survey on ATLANTIS cruise 122) of the sea floor to determine where particles from sewage sludge are being deposited as a result of discharge in the dump site (2,250-2,750 m water depth). Samples were also taken in control sites to the northeast of Hudson Canyon at about 2,500 m water depth. Reoccupied two sites on the southern flank of Georges Bank for coring and grab sampling.

Type of Activity: Sampling
Mooring work
Seismic profiling

Information to be derived: Time series data
Samples and Chemical Analysis
Grain size analysis
Suspended Sediment Concentrations

Summary: Moorings recovered: 2 (#336 and 337, deployed FA 89027 ATL2 AII222 Sep. 15-26, 1989). Box cores: 15; Van Veen grab samples: 6; Hydraulically-damped gravity cores: 6; Piston cores: 3.

USGS Project Number: 9470-30131

Contact: Mike Bothner (mbothner@usgs.gov)

InfoBank: uses the identifier O-22-90-NJ. Visit this site for more information.

Click to get Google Software - Download 90026.kml to view this field activity in Google Earth

Map for Area of Operations :

Map of field activity boundary.

Platform Info:

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

Paper seismic/sidescan bottom profiles:

Inventory #LinesFolderStart TimeEnd TimeProfile TypeRemarks
04520 001: 08//1990: 08//1990 12K-
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