Summary for Field Activity Number 1980-009-FA

Alternate Leg ID: 81

Area of Operations: Mid-Atlantic Shelf, Great South Channel, southern flank Georges Bank, Oceanographer Canyon, Lydonia Canyon, Atlantic Continental Shelf, United States, North America, North Atlantic

Dates: May 23, 1980 to June 01, 1980

Objectives: Recover 5 tripods and 4 current moorings; deploy 3 tripods and 3 current moorings; replace surface buoys; conduct CTDs and XBTs; obtain box cores and surface grabs; conduct preliminary sidescan surveys at Georges Bank sandwave area and head of Lydonia Canyon; conduct hydrographic and suspended sediment transects; and collect bathymetry in Lydonia and Oceanographer Canyons.

Type of Activity: Sampling
Mooring work

Information to be derived: Samples and chemical analysis
Grain size analysis
Suspended sediment concentrations
Time series data

Summary: CTD Stations: 43; XBTs: 49; Surface Salinity samples: 93; Navigation: 4 tapes; Box cores: 10; Grab samples: 6; Surface samples: 17. Moorings recovered: 9 (#183, 184, 185, 186, 187, 189, 190, and 192, deployed FA 79035 OCEANUS 77 Dec. 13-20, 1979; and #191, deployed FA 80001 WHITEFOOT Jan. 3-23, 1980). Moorings deployed: 6 (#193, 194, 196, 197, and 198 all recovered FA 80030 OCEANUS 88 Oct. 23-31, 1980; and #195 recovered FA 80034 OCEANUS 90 Nov. 24 - Dec. 3, 1980).

USGS Project Number:

Contact: Brad Butman (bbutman@usgs.gov)