Continued effort for Georges Bank Monitoring Program. Samples collected to determine the distribution of barium (a component of drilling mud) around the Bank and with depth in sediments. Samples were also collected to continue the monitoring of benthic infauna.
Location
Franklin Basin, Georges Bank, Gulf of Maine, United States, North America, North Atlantic;
Summary
This cruise continued the effort started 5 years ago for the Georges Bank Monitoring Program. Samples were collected to determine the distribution of barium (a component of drilling mud) around the Bank and with depth in sediments. Samples were also collected to continue the monitoring of benthic infauna. Bathymetry, near-bottom water samples, cores and grabs were also collected in Franklin Basin, just north of Georges Bank. This work investigated the anoxic sediments of this region. The hydraulically damped corer recovered excellent samples on the Bank operating through the stern A-frame using the trawl winch. Part of the success was due to the exceptionally calm seas for the first 2 days of the cruise. In anything but calm seas, it would be wise to use this equipment off the starboard side of the ship using the Marky winch and the power davit recently installed. At this position on the ship, equipment is subjected to much less heave while on station. Bathymetry: 912 km; Oxygen/nutrient water samples: 5; Salinity samples: 19; XBTs: 9; Gravity cores: 5; Grabs: 100; Hydraulically damped cores: 31.
Info derived
Time series data; Samples and chemical analysis;
Comments
Original Center People field contained: Mike Bothner, Chief Scientist; Gregory DiLisio; George Harrison; Steven Mateus; John Moody; Carol Parmenter; Richard Rendigs; Mary Polly Shoukimas; William Strahle; William Winters.
Project = Geochemistry of offshore marine sediments, Geochemistry of offshore marine sediments
Information from Foghorn: Epsco plotter;Northstar 7000, interfaced with Apple Computer (Eliason);Hydraulically damped gravity corer;Gravity corer with 4 inch plastic pipe (Broda);XBTs;Niskin bottles for salinty, oxygen, and nutrients;
Chief Scientist's report including personnel, purpose, equipment, and brief summary and comments. Also includes a trackmap and sample location and information.
Chief Scientist's pre-cruise report detailing cruise objectives, equipment, personnel, and track plan, plus watchstanders' cruise narrative with ship movement, station descriptions and sample collection notes.
