Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Hellmer, Hartmut H; Huhn, Oliver; Gomis, Damià; Timmermann, Ralph (2011): Physical oceanography from the northwestern Weddell Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.761004, Supplement to: Hellmer, HH et al. (2011): On the freshening of the northwestern Weddell Sea continental shelf. Ocean Science, 7(3), 305-316, https://doi.org/10.5194/os-7-305-2011

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2011-05-23 • DOI registered: 2011-06-21

RIS CitationBibTeX Citation ShareShow MapGoogle Earth

Abstract:
We analyzed hydrographic data from the northwestern Weddell Sea continental shelf of the three austral winters 1989, 1997, and 2006 and two summers following the last winter cruise. During summer a thermal front exists at ~64° S separating cold southern waters from warm northern waters that have similar characteristics as the deep waters of the central basin of the Bransfield Strait. In winter, the whole continental shelf exhibits southern characteristics with high Neon (Ne) concentrations, indicating a significant input of glacial melt water. The comparison of the winter data from the shallow shelf off the tip of the Antarctic Peninsula, spanning a period of 17 yr, shows a salinity decrease of 0.09 for the whole water column, which has a residence time of <1 yr. We interpret this freshening as being caused by a combination of reduced salt input due to a southward sea ice retreat and higher precipitation during the late 20th century on the western Weddell Sea continental shelf. However, less salinification might also result from a delicate interplay between enhanced salt input due to sea ice formation in coastal areas formerly occupied by Larsen A and B ice shelves and increased Larsen C ice loss.
Project(s):
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: -58.607187 * Median Longitude: -22.293824 * South-bound Latitude: -71.115000 * West-bound Longitude: -66.282000 * North-bound Latitude: -37.016600 * East-bound Longitude: 38.996800
Date/Time Start: 1989-09-10T07:28:00 * Date/Time End: 2009-02-26T21:59:00
Event(s):
ATOS2/20-1 * Latitude: -63.823800 * Longitude: -52.003700 * Date/Time: 2009-02-01T21:37:00 * Elevation: -1254.0 m * Location: Weddell Sea * Campaign: ATOS2 * Basis: Hespérides * Method/Device: CTD/Rosette (CTD-RO)
ATOS2/22-1 * Latitude: -63.885700 * Longitude: -53.941200 * Date/Time: 2009-02-02T19:46:00 * Elevation: -465.0 m * Location: Weddell Sea * Campaign: ATOS2 * Basis: Hespérides * Method/Device: CTD/Rosette (CTD-RO)
ATOS2/23-1 * Latitude: -63.863800 * Longitude: -54.520000 * Date/Time: 2009-02-02T22:25:00 * Elevation: -375.0 m * Location: Weddell Sea * Campaign: ATOS2 * Basis: Hespérides * Method/Device: CTD/Rosette (CTD-RO)
Comment:
See additional datasets from other publicationsANT-XXIII/8 - doi:10.1594/PANGAEA.735531; ANT-XXII/2 (ISPOL) - doi:10.1594/PANGAEA.742627; NBP97-05 - doi:10.1594/PANGAEA.761002
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
8 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Fahrbach, E; Rohardt, G (1991): Physical oceanography during POLARSTERN cruise ANT-IX/2 on section SR04. https://doi.org/10.1594/PANGAEA.735277
  2. Fahrbach, E; Rohardt, G (1990): Physical oceanography during POLARSTERN cruise ANT-VIII/2 (WWGS) on section SR02 and SR04. https://doi.org/10.1594/PANGAEA.742580
  3. Fahrbach, E; Rohardt, G (1993): Physical oceanography during POLARSTERN cruise ANT-X/7 on section SR04. https://doi.org/10.1594/PANGAEA.742651
  4. Fahrbach, E; Rohardt, G (1996): Physical oceanography during POLARSTERN cruise ANT-XIII/4 on section S04A. https://doi.org/10.1594/PANGAEA.738489
  5. Fahrbach, E; Rohardt, G (1998): Physical oceanography during POLARSTERN cruise ANT-XV/4 (DOVETAIL) on section SR04. https://doi.org/10.1594/PANGAEA.742626
  6. Fahrbach, E; Rohardt, G (2007): Physical oceanography during POLARSTERN cruise ANT-XXIII/7 (WWOS). https://doi.org/10.1594/PANGAEA.733423
  7. Fahrbach, E; Rohardt, G (2008): Physical oceanography during POLARSTERN cruise ANT-XXIV/3. https://doi.org/10.1594/PANGAEA.733414
  8. Hellmer, HH; Huhn, O; Gomis, D et al. (2011): Physical oceanography during Hespérides cruise ATOS2. https://doi.org/10.1594/PANGAEA.761001