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The Subduction experiment : cruise report RRS Charles Darwin cruise number 73 subduction 3 mooring deployment and recovery cruise, 30 September-26 October 1992

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dc.contributor.author Trask, Richard P.
dc.contributor.author Jenkins, William J.
dc.contributor.author Sherman, Jeffrey
dc.contributor.author McPhee, Neil M.
dc.contributor.author Ostrom, William M.
dc.contributor.author Payne, Richard E.
dc.coverage.spatial 18°N, 34°W
dc.coverage.spatial 18°N, 22°W
dc.coverage.spatial 25.5°N, 29°W
dc.coverage.spatial 33°N, 22°W
dc.coverage.spatial 33°N, 34°W
dc.date.accessioned 2006-02-28T15:40:12Z
dc.date.available 2006-02-28T15:40:12Z
dc.date.issued 1993-03
dc.identifier.uri http://hdl.handle.net/1912/622
dc.description.abstract Subduction is the mechanism by which water masses formed in the mixed layer and near the surface of the ocean find their way into the upper thermocline. The subduction process and its underlying mechanisms were studied through a combination of Eulerian and Langrangian measurements of velocity, measurements of tracer distrbutions and hydrographic properties and modeling. An array of five surface moorings carrying meteorological and oceanographic instrumentation were deployed for a period of two years beginning in June 1991 as part of an Office of Naval Research (ONR) funded Subduction experiment. Three eight month deployments were planned. The moorings were deployed at 18°N 34°W, 18°N 22°W, 25.5°N 29°W, 33°N 22°W and 33°N 34°W. A Vector Averaging Wind Recorder (VAWR) and an Improved Meteorological Recorder (IMET) collected wind speed and wind direction, sea surface temperature, air temperature, short wave radiation, barometric pressure and relative humidity. The IMET also measured precipitation. The moorings were heavily instrumented below the surface with Vector Measuring Current Meters (VMCM), and single point temperature recorders. Expendable bathythermograph (XBT) data were collected and meteorological observations were made while transitting between mooring locations. In addition a series of 59 cm stations were made and water samples taken to be analyzed for tritium levels, salinity and dissolved oxygen content. This report describes the work that took place during RRS Charles Darwin cruise number 73 which was the third scheduled Subduction mooring cruise. During this cruise the second setting of the moorings were recovered and redeployed for a third eight month period. This report includes a description of the instrumentation that was deployed and recovered, has information about the underway measurements (XBT and meteorological observations) that were made including plots of the data, includes a description of the work conducted in conjunction with the tracer/hydrography program and presents a chronology of the cruise events. en
dc.description.sponsorship Funding was provided by the Office of Naval Research under contract N00014-90-J-1490. en
dc.format.extent 4133014 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Woods Hole Oceanographic Institution en
dc.relation.ispartofseries WHOI Technical Reports en
dc.relation.ispartofseries WHOI-93-18 en
dc.relation.ispartofseries Upper Ocean Processes Group en
dc.relation.ispartofseries UOP-93-03 en
dc.subject Air-sea interaction en
dc.subject Moored instruments en
dc.subject Subduction en
dc.title The Subduction experiment : cruise report RRS Charles Darwin cruise number 73 subduction 3 mooring deployment and recovery cruise, 30 September-26 October 1992 en
dc.type Technical Report en
dc.identifier.doi 10.1575/1912/622


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