USGS Woods Hole, MA Field Activity Report for 81009

Alternate number:

OC95

Platform:

OCEANUS

Submersible:

Owner-Operator:

WHOI, Woods Hole, MA

Captain:

Paul C. Howland - Master, WHOI

Center Principal:

Brad Butman

Affiliate Principal
(if any):

Area of Operations:

Georges Bank, Lydonia Canyon, United States, North America, North Atlantic

Bounding Coordinates

North:

41.5177777777778

South:

40.1225

West:

-70.8847222222222

East:

-67.4113888888889

Start and End Dates:

April 23, 1981 to May 6, 1981

Start and End Ports:

from Woods Hole, MA to Woods Hole, MA

Days at Sea:

Project Number:

Project Title:

Sediment Dynamics

Cruise Funding Source:

NSF/USGS

Contract:

14-08-0001-18920

Type of Activity:

Objectives:

Recover 16 moorings, 3 tripods, and 5 buoys; deploy 4 moorings and 2 tripods; recover buoys GKQ unrecovered Oct. and Nov. 1980, OCNS 88, 90 cruises. Collect XBT, CTD and bathymetry data in and around Lydonia Canyon. Obtain surface grab samples at Stations A, K, Q, and LCA.

Information to be derived:

Time series data
Samples and Chemical Analysis
Grain size analysis

Data Types (and Media) Produced:

Scientific Party
(USGS):

Brad Butman, Chief Scientist; Michael Bothner, David Brewster, John Larson, Greg Miller, Frank Musialowski, Marlene Noble, Carol Parmenter, Richard Rendigs, Polly Shoukimas

Scientific Party
(affiliate):

Andy Eliason - Eliason Data Services; Rose Petrecca - WHOI

Data Curator:

Scientific Equipment:

Northstar Loran-C 6000, Gifft E/S, XBT, Neil Brown CTD and rosette sampler, AMF acoustic system, Van Veen grab, mooring hardware and recovery equipment.

Navigation techniques used:

Northstar Loran-C

Summary of Results:

All current moorings, tripods and surface buoys were recovered as planned, except the surface mooring at LCL and the subsurface mooring of LCE. Three (of 3) shallow tripods, 3 (of 4) deep tripods, 18 (of 21) sediment traps and 32 (of 34) VACMs were recovered. Preliminary indications are that the data return from the instruments and sediment traps was good. A minimum of nutrient and suspended sediment profiling was conducted due to time spent dragging for the two tripods and the mooring at LCE. A mooring with current meter and two sediment traps was deployed at LCE to obtain information where the mooring was not recovered. Moorings deployed: 6 (#223, 224, 225, 226, 227, and 228 all recovered FA 81034 OCEANUS 104 Sep. 25 - Oct. 2, 1981). Moorings recovered: 18 (#203, 204, 210, 212, and 213, deployed FA 80030 OCEANUS 88 Oct. 23-31,1980; #205, 207, 208, 209, 211 (partial), 214, 215, 216, 217, 218, 219, and 220 deployed FA 80034 OCEANUS 90 Nov. 24 - Dec. 3, 1980; and #221 and 222 deployed FA 81002 OCEANUS 91 Jan. 16-22, 1981). Surface buoys recovered: 6; CTD stations: 27; XBT stations: 41; Grab samples: 72; Bathymetric surveys: 4 (Sites C, D, F, and G).

Number of Stations Occupied:

Station Description:

Number of Submersible Dives:

Continuous Data (in Km):

Seismic Line Descriptions:

Track Plot:

Related Web Sites:

Remarks:

Moorings at LCE and LCL unrecovered.

Contact:

Brad Butman (bbutman@usgs.gov)

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