Multibeam bathymetry and CTD measurements in two fjord systems in southeastern Greenland

Kristian Kjellerup Kjeldsen; Reimer Wilhelm Weinrebe; Jørgen Bendtsen; Anders Anker Bjørk; Kurt H. Kjær

doi:10.5194/essd-9-589-2017

Multibeam bathymetry and CTD measurements in two fjord systems in southeastern Greenland

Kristian Kjellerup Kjeldsen, Reimer Wilhelm Weinrebe, Jørgen Bendtsen, Anders Anker Bjørk, Kurt H. Kjær

6 Citationer (Scopus)

125 Downloads (Pure)

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.

Originalsprog	Engelsk
Tidsskrift	Earth System Science Data
Vol/bind	9
Sider (fra-til)	589-600
Antal sider	12
ISSN	1866-3508
DOI	https://doi.org/10.5194/essd-9-589-2017
Status	Udgivet - 18 aug. 2017

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10.5194/essd-9-589-2017Licens: CC BY

Kjeldsen_2017_Multibeam_bathymetryForlagets udgivne version, 7,82 MBLicens: CC BY

Citationsformater

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title = "Multibeam bathymetry and CTD measurements in two fjord systems in southeastern Greenland",

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 m{\'e}lange 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.",

author = "Kjeldsen, {Kristian Kjellerup} and Weinrebe, {Reimer Wilhelm} and J{\o}rgen Bendtsen and Bj{\o}rk, {Anders Anker} and Kj{\ae}r, {Kurt H.}",

year = "2017",

month = aug,

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doi = "10.5194/essd-9-589-2017",

language = "English",

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TY - JOUR

T1 - Multibeam bathymetry and CTD measurements in two fjord systems in southeastern Greenland

AU - Kjeldsen, Kristian Kjellerup

AU - Weinrebe, Reimer Wilhelm

AU - Bendtsen, Jørgen

AU - Bjørk, Anders Anker

AU - Kjær, Kurt H.

PY - 2017/8/18

Y1 - 2017/8/18

N2 - 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.

AB - 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.

U2 - 10.5194/essd-9-589-2017

DO - 10.5194/essd-9-589-2017

M3 - Journal article

SN - 1866-3508

VL - 9

SP - 589

EP - 600

JO - Earth System Science Data

JF - Earth System Science Data

ER -

Multibeam bathymetry and CTD measurements in two fjord systems in southeastern Greenland

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