The objective of the program is to make long-term measurements of currents and sediment transport in the vicinity of the proposed ocean outfall in Massachusetts Bay. The purpose of this cruise was to recover and redeploy the instrumented moorings. Samples of bottom sediments are collected on each cruise required to service the instruments. This was the second in a series of six cruises during the 2 year period of the present Joint Funding Agreement between the Massachusetts Water Resources Authority and the USGS.
Location
Massachusetts Bay, Massachusetts, United States, North America, North Atlantic,
Summary
This cruise was extended to 3 days in order to recover the tripod which would not release its float on command. Using careful acoustic ranging and highly accurate triangulation, the position of the instrument was pinpointed. On the second day of the cruise (Mar. 28), divers from WHOI were placed within 50 ft. of the instrument and attached a retrieval line. All our equipment was recovered without damage. The divers reported that the recovery rope canister was detached from the tripod. A piece of fishing net remained on the tripod suggesting how the rope canister might have been damaged. Moorings deployed: 2 (#340 and 341, recovered FA 90016 WHITE HEATH July 10-11, 1990). Moorings recovered: 2 (#338 and 339, deployed FA 89035 WHITE HEATH Dec. 5-6, 1989).
Info derived
Time series data; Samples and chemical analysis; Suspended sediment concentrations;
Comments
Original Center People field contained: Barbanti - mooring work, sampling; Dann Blackwood - mooring work, sampling; Mike Bothner - mooring work, sampling; Brad Butman - mooring work; Richard Rendigs - mooring work, sampling; William Strahle - mooring work; Adam Brown - sampling; Carol Parmenter - sampling.
Project = Circulation, Pollutant Transport - MA Coastal Water, Circulation, Pollutant Transport - MA Coastal Water
Information from Foghorn: Mooring gear: Butman Tripod, subsurface array, and VMCM;Van Veen grab sampler;Hydraulically damped gravity corer;
Chief Scientist's cruise report including personnel, purpose, equipment, tabulated information, brief summary, location map, mooring schematic, bottom cores and grab samples collected with coordinates and analyses, and log for video camera that photographed sampling operation.
