USGS Woods Hole, MA Field Activity Report for 89027

Alternate number:

AII 122

Platform:

ATLANTIS II

ALVIN

Submersible:

ALVIN

Owner-Operator:

WHOI, Woods Hole, MA

Captain:

Gary B. Chiljean-WHOI, Master

Center Principal:

Michael Bothner

Affiliate Principal
(if any):

J. Fred Grassle, Rutgers University

Area of Operations:

Continental Rise offshore New Jersey, New York, DWDS 106, United States, North America, North Atlantic

Bounding Coordinates

North:

South:

38.5

West:

-72.5

East:

-70.5

Start and End Dates:

September 16, 1989 to September 26, 1989

Start and End Ports:

from Woods Hole, MA to Woods Hole, MA

Days at Sea:

Project Number:

Project Title:

Cruise Funding Source:

NOAA, support funding from USGS for part of program

Contract:

Type of Activity:

Sampling
Mooring work
Seafloor mapping

Objectives:

To test the hypothesis that particles from municipal sewage sludge disposal at Deep-water dumpsite 106 can be detected on the deep-sea floor in the vicinity of this dump site (2250-2750 m water depth). USGS objectives were to construct a detailed bathymetric map using Sea Beam (URI), deploy instruments to moniter currents and sediment transport, and to collect samples to evaluate rates of sediment mixing and accumulation and levels of chemical contaminants in surficial sediments. Data aCquired include a Sea Beam bathymetric map and digitally recorded depth data from a survey area of about 520 nmi2, (or about 1750 km2), sediment samples from gravity cores and Alvin-manipulated cores (some cores were subsampled at sea), the usual video, camera, and audio descriptive data generated by ALVIN. Current-meter and sediment-trap data retrieval tentatively scheduled for OCEANUS cruise in May 1990.

Information to be derived:

Times series data
Samples and Chemical Analysis
Grain size analysis
Suspended Sediment Concentrations
Sea Floor Map
Bathymetric Maps

Data Types (and Media) Produced:

Scientific Party
(USGS):

Michael Bothner, Adam Brown, Ginger Fry, Richard Rendigs, James Robb, William Strahle;

Scientific Party
(affiliate):

Fred Grassle, RoseMARIE Petrecca, Hovey Clifford, Paul Snelgrove, Michael Moore-all WHOI,Bob Whitlatch- UCONN, Russel Hill and Ivor Knight-Univ. of MD, Walter Sullivan- New York Times, Michael DeLuca-NOAA, Joyce Miller and Peter Lemmond-URI Seabeam group.

Data Curator:

Scientific Equipment:

4 current meters with transmissometers, 4 Anderson-type and 7 tube-type sediment traps, gravity corer (4 in pvc barrels, system provided by J. Broda-WHOI), suspended sediment
DSRV Alvin and support equipment, Seabeam and acquisition and processing equipment (WHOI and URI)

Navigation techniques used:

Loran C, bottom tranponder nets for Alvin nav.

Summary of Results:

Moorings deployed: 2(#336,337 recovered #90026 OCEANUS 222 Aug 2-7, 1990.)

Number of Stations Occupied:

Station Description:

Number of Submersible Dives:

Continuous Data (in Km):

Seismic Line Descriptions:

Track Plot:

Related Web Sites:

Remarks:

Contact:

Michael Bothner (mbothner@usgs.gov)

Post Field Activity Information for 89027

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