Darelius, Elin; Fer, Ilker; Sallée, Jean-Baptiste (2017): Physical oceanography from mooring SA in the Weddell Sea [dataset publication series]. Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, PANGAEA, https://doi.org/10.1594/PANGAEA.883905, Supplement to: Darelius, Elin; Sallée, Jean Baptiste (2018): Seasonal Outflow of Ice Shelf Water Across the Front of the Filchner Ice Shelf, Weddell Sea, Antarctica. Geophysical Research Letters, 45(8), 3577-3585, https://doi.org/10.1002/2017GL076320
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Abstract:
The ice shelf water (ISW) found in the Filchner Trough, located in the southern Weddell Sea, Antarctica, is climatically important; it descends into the deep Weddell Sea contributing to bottom water formation, and it blocks warm off‐shelf waters from accessing the Filchner ice shelf cavity. Yet the circulation of ISW within the Filchner Trough and the processes determining its exchange across the ice shelf front are to a large degree unknown. Here mooring records from the ice shelf front are presented, the longest of which is 4 years long. They show that the coldest (Θ =− 2.3∘C) ISW, which originates from the Ronne Trough in the west, exits the cavity across the western part of the ice shelf front during late austral summer and early autumn. The supercooled ISW escaping the cavity flows northward with a velocity of about 0.03 m/s. During the rest of the year, there is no outflow at the western site: the current is directed eastward, parallel to the ice shelf front, and the temperatures at the mooring site are slightly higher (Θ =− 2.0∘C). The eastern records show a more persistent outflow of ISW.
Related to:
Darelius, Elin; Fer, Ilker (2015): Physical oceanography and current measurements in the Filchner Depression (Weddell Sea, Antarctica) during Ernest Shackleton cruise ES060. PANGAEA, https://doi.org/10.1594/PANGAEA.845032
Darelius, Elin; Fer, Ilker (2017): Physical oceanography from mooring SB, SC, SD and SE in the Weddell Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.870518
Further details:
Darelius, Elin (2017): Mooring SA - Data processing. Geophysical Institute, University of Bergen, 3 pp, hdl:10013/epic.52031.d001
Darelius, Elin; Fer, Ilker (2013): Cruise Report - Cruise ES060 with R.R.S ERNEST SHACKLETON - 10 December 2012 - 28 January 2013. Geophysical Institute, University of Bergen, 27 pp, hdl:10013/epic.45259.d001
Sallée, Jean-Baptiste (2017): Cruise Report JR16004 24 Jan - 13 Mar 2017, James Clark Ross. 331 pp, hdl:10013/epic.52041.d001
Coverage:
Latitude: -77.917700 * Longitude: -42.157600
Date/Time Start: 2013-01-04T11:00:00 * Date/Time End: 2017-02-26T23:55:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets
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Datasets listed in this publication series
- Darelius, E; Fer, I; Sallée, J-B (2017): Temperature and pressure measurements from 2013 from mooring SA in the Weddell Sea. https://doi.org/10.1594/PANGAEA.883899
- Darelius, E; Fer, I; Sallée, J-B (2017): Temperature and pressure measurements from 2014 from mooring SA in the Weddell Sea. https://doi.org/10.1594/PANGAEA.883902
- Darelius, E; Fer, I; Sallée, J-B (2017): Temperature and pressure measurements from 2015 from mooring SA in the Weddell Sea. https://doi.org/10.1594/PANGAEA.883901
- Darelius, E; Fer, I; Sallée, J-B (2017): Temperature and pressure measurements from 2016 from mooring SA in the Weddell Sea. https://doi.org/10.1594/PANGAEA.883900
- Darelius, E; Fer, I; Sallée, J-B (2017): Current measurements from mooring SA in the Weddell Sea. https://doi.org/10.1594/PANGAEA.883780