Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard
In this study, we combine remote sensing, in situ and model-derived datasets from 1966 to 2014 to calculate the mass-balance components of Kronebreen, a fast-flowing tidewater glacier in Svalbard. For the well-surveyed period 2009–2014, we are able to close the glacier mass budget within the prescri...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/408378 2023-12-03T10:23:08+01:00 Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard Deschamps-Berger, Cesar Nuth, Christopher van Pelt, W.J.J. Berthier, Etienne Kohler, Jack Altena, B. Sub Dynamics Meteorology Marine and Atmospheric Research 2019-01-24 application/pdf https://dspace.library.uu.nl/handle/1874/408378 en eng 0022-1430 https://dspace.library.uu.nl/handle/1874/408378 info:eu-repo/semantics/OpenAccess Article 2019 ftunivutrecht 2023-11-08T23:18:50Z In this study, we combine remote sensing, in situ and model-derived datasets from 1966 to 2014 to calculate the mass-balance components of Kronebreen, a fast-flowing tidewater glacier in Svalbard. For the well-surveyed period 2009–2014, we are able to close the glacier mass budget within the prescribed errors. During these 5 years, the glacier geodetic mass balance was −0.69 ± 0.12 m w.e. a−1, while the mass budget method led to a total mass balance of −0.92 ± 0.16 m w.e. a−1, as a consequence of a strong frontal ablation (−0.78 ± 0.11 m w.e. a−1), and a slightly negative climatic mass balance (−0.14 ± 0.11 m w.e. a−1). The trend towards more negative climatic mass balance between 1966–1990 (+0.20 ± 0.05 m w.e. a−1) and 2009–2014 is not reflected in the geodetic mass balance trend. Therefore, we suspect a reduction in ice-discharge in the most recent period. Yet, these multidecadal changes in ice-discharge cannot be measured from the available observations and thus are only estimated with relatively large errors as a residual of the mass continuity equation. Our study presents the multidecadal evolution of the dynamics and mass balance of a tidewater glacier and illustrates the errors introduced by inferring one unmeasured mass-balance component from the others. Article in Journal/Newspaper glacier Svalbard Tidewater Utrecht University Repository Kronebreen ENVELOPE(13.333,13.333,78.833,78.833) Svalbard |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
In this study, we combine remote sensing, in situ and model-derived datasets from 1966 to 2014 to calculate the mass-balance components of Kronebreen, a fast-flowing tidewater glacier in Svalbard. For the well-surveyed period 2009–2014, we are able to close the glacier mass budget within the prescribed errors. During these 5 years, the glacier geodetic mass balance was −0.69 ± 0.12 m w.e. a−1, while the mass budget method led to a total mass balance of −0.92 ± 0.16 m w.e. a−1, as a consequence of a strong frontal ablation (−0.78 ± 0.11 m w.e. a−1), and a slightly negative climatic mass balance (−0.14 ± 0.11 m w.e. a−1). The trend towards more negative climatic mass balance between 1966–1990 (+0.20 ± 0.05 m w.e. a−1) and 2009–2014 is not reflected in the geodetic mass balance trend. Therefore, we suspect a reduction in ice-discharge in the most recent period. Yet, these multidecadal changes in ice-discharge cannot be measured from the available observations and thus are only estimated with relatively large errors as a residual of the mass continuity equation. Our study presents the multidecadal evolution of the dynamics and mass balance of a tidewater glacier and illustrates the errors introduced by inferring one unmeasured mass-balance component from the others. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
Deschamps-Berger, Cesar Nuth, Christopher van Pelt, W.J.J. Berthier, Etienne Kohler, Jack Altena, B. |
spellingShingle |
Deschamps-Berger, Cesar Nuth, Christopher van Pelt, W.J.J. Berthier, Etienne Kohler, Jack Altena, B. Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard |
author_facet |
Deschamps-Berger, Cesar Nuth, Christopher van Pelt, W.J.J. Berthier, Etienne Kohler, Jack Altena, B. |
author_sort |
Deschamps-Berger, Cesar |
title |
Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard |
title_short |
Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard |
title_full |
Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard |
title_fullStr |
Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard |
title_full_unstemmed |
Closing the mass budget of a tidewater glacier: the example of Kronebreen, Svalbard |
title_sort |
closing the mass budget of a tidewater glacier: the example of kronebreen, svalbard |
publishDate |
2019 |
url |
https://dspace.library.uu.nl/handle/1874/408378 |
long_lat |
ENVELOPE(13.333,13.333,78.833,78.833) |
geographic |
Kronebreen Svalbard |
geographic_facet |
Kronebreen Svalbard |
genre |
glacier Svalbard Tidewater |
genre_facet |
glacier Svalbard Tidewater |
op_relation |
0022-1430 https://dspace.library.uu.nl/handle/1874/408378 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1784271180317851648 |