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http://hdl.handle.net/1956/597
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| Title: | Circulation and water masses beneath the northern Ronne Ice Shelf, Antarctica |
| Authors: | Nicholls, Keith W.
Makinson, Keith
Østerhus, Svein |
| Issue Date: | 14-Dec-2004 |
| Publisher: | American Geophysical Union |
| Series/Report no.: | Journal of Geophysical Research;109(2004) C12 |
| Abstract: | We present oceanographic data from beneath the northern Ronne Ice Shelf. The data were collected during the austral summer of 2002–2003 from four sites located near the ice front in the Ronne Depression. They consist of conductivity-temperature-depth (CTD) profiles and time series from moored instruments that vary in length from 9 to 20 weeks. A strong, tidally modulated inflow of relatively fresh water was found at the eastern margin of the Ronne Depression. This low-density inflow powers high basal melt rates that are responsible for a substantially thinned area of ice shelf. A northward flow of Ice Shelf Water along the western margin of the depression (the Antarctic Peninsula coast) was inferred from the CTD data. From the new CTD and current meter data, and from published results from cruises along the ice front, we suggest that the flows at the margins of the Ronne Depression establish east-west density gradients that drive an anticyclonic circulation within the depression. The b... |
| URI: | http://hdl.handle.net/1956/597 |
| Appears in Collections: | Eprints by the Geophysical Institute
Eprints by the Bjerknes Centre for Climate Research (BCCR)
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| Osterhus4.pdf | 550Kb | Adobe PDF | View/Open |
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