Journal cover Journal topic
Earth System Science Data The Data Publishing Journal
Earth Syst. Sci. Data, 9, 589-600, 2017
https://doi.org/10.5194/essd-9-589-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Review article
18 Aug 2017
Multibeam bathymetry and CTD measurements in two fjord systems in southeastern Greenland
Kristian Kjellerup Kjeldsen1,2,3, Reimer Wilhelm Weinrebe4, Jørgen Bendtsen5,6, Anders Anker Bjørk1,7,8, and Kurt Henrik Kjær1 1Centre for GeoGenetics, Natural History Museum, University of Copenhagen, 1350 Copenhagen K, Denmark
2Department of Earth Sciences, University of Ottawa, Ottawa, K1N 6N5, Canada
3DTU Space – National Space Institute, Technical University of Denmark, Department of Geodesy, 2800 Kgs. Lyngby, Denmark
4GEOMAR, Helmholtz-Zentrum für Ozeanforschung, 24148 Kiel, Germany
5Arctic Research Centre, Aarhus University, 8000 Aarhus, Denmark
6ClimateLab, Symbion Science Park, Fruebjergvej 3, 2100 Copenhagen Ø, Denmark
7Department of Earth System Science, University of California, Irvine, CA 92697, USA
8NASA Jet Propulsion Laboratory, Pasadena, CA 91109, USA
Abstract.

We present bathymetry and hydrological observations collected in the summer of 2014 from two fjord systems in southeastern Greenland with a multibeam sonar system. Our results provide a detailed bathymetric map of the fjord complex around the island of Skjoldungen in Skjoldungen Fjord and the outer part of Timmiarmiut Fjord and show far greater depths compared to the International Bathymetric Chart of the Arctic Ocean. The hydrography collected shows different properties in the fjords with the bottom water masses below 240 m in Timmiarmiut Fjord being 1–2 °C warmer than in the two fjords around Skjoldungen, but data also illustrate the influence of sills on the exchange of deeper water masses within fjords. Moreover, evidence of subglacial discharge in Timmiarmiut Fjord, which is consistent with satellite observations of ice mélange set into motion, adds to our increasing understanding of the distribution of subglacial meltwater. Data are available through the PANGAEA website at https://doi.pangaea.de/10.1594/PANGAEA.860627.



Citation: Kjeldsen, K. K., Weinrebe, R. W., Bendtsen, J., Bjørk, A. A., and Kjær, K. H.: Multibeam bathymetry and CTD measurements in two fjord systems in southeastern Greenland, Earth Syst. Sci. Data, 9, 589-600, https://doi.org/10.5194/essd-9-589-2017, 2017.
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Short summary
Here we present bathymetric and hydrographic measurements from two fjords in southeastern Greenland surveyed in 2014, leading to improved knowledge of the fjord morphology and an assessment of the variability in water masses in the fjords systems. Data were collected as part of a larger field campaign in which we targeted marine and terrestrial observations to assess the long-term behavior of the Greenland ice sheet and provide linkages to modern observations.
Here we present bathymetric and hydrographic measurements from two fjords in southeastern...
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