Other ID: I-10-90-AT; AMASSEDS CRUISE III, CI9004
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: Amazon Shelf, Brazil, South America, South Atlantic;
Principal Investigator(s): William J. Strahle
Affiliate Investigator(s): Richard Sternberg, Univ. WA
Data Type(s): Visual Identification: Ground Truthing, Sampling: Chemistry, Sampling: Geology, Sampling: Biology
Scientific Purpose/Goals: To study the movement of sediment particles in the water column, the accumulation of sediment particles on the sea bed, and the effects that sediment particles have on geochemical processes in the water column and sea bed. On this leg of cruise, recover moorings deployed during Leg 2, February 1990.
Start Date: 1990-06-16
Start Port/Location: Belem, Brazil
End Date: 1990-06-24
End Port/Location: Belem, Brazil
Equipment Used: Mooring tripod, GEOPROBE, Gill Nets
Information to be Derived:
Summary of Activity and Data Gathered: The mooring at site M-1 was recovered first with all instruments except for one Datawell Waverider which apparently broke free and drifted out of the study. All instruments were recovered from site M-3 with no complications. At site M-2 the instrumented mooring had to be dragged for with grappling hooks because all surface buoys deployed at M-2 had broken free. All instruments on the mooring were recovered by dragging except for one which was subsequently found and returned by Brazilian fishermen. The instrumented tripod, GEOPROBE, was recovered using a trawling net. The instruments on the tripod were recovered undamaged and with data preserved.
Staff: William J. Strahle
Notes: Information derived from schedule and InfoBank.