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USGS Participates in Sediment-Transport Cruise in the Adriatic Sea
Chris Sherwood, Joanne Ferreira, Dave Rubin, Jonathan Borden, and Hank Chezar traveled to Italy in October, and after spending long days prepping gear at the well-equipped marine facility at Istituto de Geologia Marina (and long dinners in the restaurants of Bologna), they deployed tripods and moorings in the Adriatic Sea. The deployment cruise went almost exactly as planned, which is remarkable, considering that North American scientists were working in Italian waters on a Spanish ship. The officers and crew of the research vessel Garcia del Cid, from the Instituto de Ci�ncies del Mar (ICM) in Barcelona, proved outstanding mariners, and all the coring, mooring, tripod, and water-column work went perfectly. The USGS gear had been prepared at the USGS' Marine Facility (MARFAC) in Redwood City, CA, by Dave Hogg, Dave Gonzales, Kevin O'Toole, and Hal Williams and at the USGS' Marine Operations Facility (MOF) in Woods Hole, MA, by Marinna Martini and Andree Ramsey. It arrived in Italy and breezed through customs in perfect condition.
A nearby tripod, prepped by Chris, Paul, and Joanne, will measure waves, currents, turbulence, and suspended sediment near the bottom with acoustic technology, as well as turbidity, temperature, and salinity. The tripods are protected by three guard buoys, provided by the Woods Hole Oceanographic Institution (WHOI) and the University of Washington, that support near-surface instruments to measure temperature, salinity, and turbidity. The USGS also deployed a GEOPROBE tripod at 20-m water depth, which will measure near-bottom flow and sediment transport. USGS emeritus scientist Dave Cacchione (Menlo Park, CA) collaborated with Pere Puig (ICM, Barcelona) to deploy an instrumented mooring off the Pescara River to measure internal waves. The USGS deployments are part of a larger measurement program with seven tripods, two trawl-resistant bottommounts, an instrumented subsurface mooring, and a dozen guard buoys, some with instruments. The array extends from the Po River to the Gargano Peninsula and will remain in the water until May 2003. A February refurbishing cruise and the May recovery cruise will take place on the Seaward Johnson II, from Harbor Branch Oceanographic Institute. Extensive coring, bottom sampling, and hydrographic surveys are being conducted. If all goes as planned, the PASTA study will provide one of the most comprehensive data sets ever for process studies of sediment transport and deposition in a coastal environment. This winter, the Adriatic Sea is the site of an unprecedented number of major and complementary studies, in addition to the PASTA study:
EuroSTRATAFORM, which is funded by the Office of Naval Research, expands process studies of continental-margin sediment transport and formation of sedimentary strata to geographic regions in the Adriatic Sea and the Gulf du Lyons and to continental-slope regions off Spain and Norway. The October-November cruise was a collaborative effort, with
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in this issue:
cover story: Adriatic Sea Sediment-Transport Cruise Assateague Island Vegetation Mapping Field-Testing New Portable Drilling System Woods Hole Field Center Open House St. Petersburg Field Center Open House Fourth-Graders Tour St. Petersburg Field Center Effects of Fishing Activities on Benthic Habitats Planning Gas-Hydrates Research Science and Politics in Ecosystem Decisions Louisiana Coastal-Restoration Advisory Board |