Beaufort Gyre Freshwater Experiment : deployment operations and technology 2003
Ostrom, William M.
Kemp, John N.
Krishfield, Richard A.
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KeywordArctic operations; Mooring deployments; Beaufort Gyre Freshwater Experiment; Louis S. St. Laurent (Ship) Cruise JWACS
The Beaufort Gyre Freshwater Experiment (BGFE) observational program was designed to measure the freshwater content of the upper ocean and sea ice in the Beaufort Gyre of the Arctic Ocean using bottom-tethered moorings, drifting buoys, and hydrographic stations. The mooring program required the development of a safe and efficient deployment method by which the subsurface system could be deployed in waters surrounded by sea ice. This report documents the mooring procedure used to deploy the three BGFE moorings from the CCGS Louis S. St- Laurent, during the Joint Western Arctic Climate Study – 2003 (August 6 – September 7). The technical details of the instrumentation attached to each mooring and the specific deployment parameters are described. Specifics pertaining to the deployment of four surface-tethered drifters in the ice are also documented.
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Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle Krishfield, Richard A.; Proshutinsky, Andrey; Tateyama, K.; Williams, William J.; Carmack, Eddy C.; McLaughlin, Fiona A.; Timmermans, Mary-Louise (John Wiley & Sons, 2014-02-22)Time series of ice draft from 2003 to 2012 from moored sonar data are used to investigate variability and describe the reduction of the perennial sea ice cover in the Beaufort Gyre (BG), culminating in the extreme minimum ...
Proshutinsky, Andrey; Krishfield, Richard A.; Timmermans, Mary-Louise; Toole, John M.; Carmack, Eddy C.; McLaughlin, Fiona A.; Williams, William J.; Zimmermann, Sarah; Itoh, Motoyo; Shimada, Koji (American Geophysical Union, 2009-06-24)We investigate basin-scale mechanisms regulating anomalies in freshwater content (FWC) in the Beaufort Gyre (BG) of the Arctic Ocean using historical observations and data collected in 2003–2007. Specifically, the mean ...
Kemp, John N.; Newhall, Kris; Ostrom, William M.; Krishfield, Richard A.; Proshutinsky, Andrey (Woods Hole Oceanographic Institution, 2005-05)Situated beneath the Arctic perennial ice pack, the principal components of the Beaufort Gyre Observing System are three deep-ocean bottom-tethered moorings with CTD and velocity profilers, upward looking sonars for ice ...