Summary for Field Activity Number 79021

Alternate Leg ID: 67

Area of Operations: Mid-Atlantic Shelf, Mud Patch, Georges Bank, Georges Shoal, Little Georges, Great South Channel, United States, North America, North Atlantic

Dates: August 6, 1979 to August 13, 1979

Chief scientist: Brad Butman
   

Objectives: This cruise was part of a continuing study of currents and sediment transport on the United States East Coast Continental Shelf. Objectives were to: recover 1 tripod and 3 current moorings; deploy 4 tripods and 3 current moorings; repair/replace surface buoys; obtain grab samples at mooring locations, obtain gravity cores at selected sites; conduct temperature/salinity surveys and collect suspended matter samples for talc analyses; conduct a sidescan survey of large-scale bedforms on Georges Bank.

Type of Activity: Sampling
Mooring work
Seafloor mapping

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

Summary: Moorings recovered: 4; Georges Bank: #171 (deployed FA 79002 OCEANUS 56 Mar. 6-15, 1979); 174 and 175 (both deployed FA 79004 OCEANUS 58 Mar. 27-29, 1979); Mid-Atlantic: #172 (deployed FA 79002 OCEANUS 056 Mar. 6-15, 1979). Moorings deployed: 7; Georges Bank: #176 (recovered FA 79035 OCEANUS 77 Dec. 13-20, 1979); 178 (recovered FA 80001 WHITEFOOT Jan. 3-23, 1980); 181 and 182 (both recovered FA 79035 OCEANUS 77 Dec. 13-20, 1979); Mid-Atlantic: #177 (recovered FA 80001 WHITEFOOT Jan. 3-23, 1980), 179 (recovered FA 79035 OCEANUS 77 Dec. 13-20, 1979), 180 (recovered FA 80001 WHITEFOOT Jan. 3-23, 1980, surface buoy gone, mooring lost). Klein Sidescan, Uniboom survey: Georges Shoal, Little Georges, Great South Channel; Hydrographic stations: 59; XBT: 28; CTD: 23; Surface salinity: 47; Grab samples: 12; Gravity cores: 3; Suspended matter (talc): 15.

USGS Project Number:

Contact: Stephanie Pfirman ()

InfoBank: uses the identifier O-67-79-NA. Visit this site for more information.