1. Coastal and Marine Hazards and Resources
2. Geoscience Data System

Field Activity 1990-010-FA

Identifier	1990-010-FA
Alternate names	I-10-90-AT; AMASSEDS CRUISE III, CI9004
Purpose	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.
Location	Amazon Shelf, Brazil, South America, South Atlantic;
Summary	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.
Comments	Information derived from schedule and InfoBank.
Platform	Columbus Iselin Length 155 feet
Itinerary	Start Belem, Brazil 1990-06-16 End Belem, Brazil 1990-06-24 Days in the field 12
Bounds	West -59.75 East -29.75 North 19.75 South -9.75 Show or hide mapHide layers