Details
| Original language | English |
|---|---|
| Pages (from-to) | 83-91 |
| Number of pages | 9 |
| Journal | Earth, moon and planets |
| Volume | 94 |
| Issue number | 1-2 |
| Publication status | Published - 5 Nov 2005 |
| Externally published | Yes |
Abstract
An overview of advances in ice research which can be expected from future satellite gravity missions is given. We compare present and expected future accuracies of the ice mass balance of Antarctica which might be constrained to 0.1-0.3 mm/year of sea level equivalent by satellite gravity data. A key issue for the understanding of ice mass balance is the separation of secular and interannual variations. For this aim, one would strongly benefit from longer uninterrupted time series of gravity field variations (10 years or more). An accuracy of 0.01 mm/year for geoid time variability with a spatial resolution of 100 km would improve the separability of ice mass balance from mass change due to glacial isostatic adjustment and enable the determination of regional variations in ice mass balance within the ice sheets. Thereby the determination of ice compaction is critical for the exploitation of such high accuracy data. A further benefit of improved gravity field models from future satellite missions would be the improvement of the height reference in the polar areas, which is important for the study of coastal ice processes. Sea ice thickness determination and modelling of ice bottom topography could be improved as well.
Keywords
- Geoid time variation, Ice mass balance, Ice thickness, Satellite gravity missions, Sea level change
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Earth and Planetary Sciences (miscellaneous)
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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In: Earth, moon and planets, Vol. 94, No. 1-2, 05.11.2005, p. 83-91.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - Ice mass balance and ice dynamics from satellite gravity missions
AU - Flury, J.
N1 - Funding Information: This work was funded in part by Deutsches Zentrum für Luft-und Raum-fahrt (DLR) which is gratefully acknowledged.
PY - 2005/11/5
Y1 - 2005/11/5
N2 - An overview of advances in ice research which can be expected from future satellite gravity missions is given. We compare present and expected future accuracies of the ice mass balance of Antarctica which might be constrained to 0.1-0.3 mm/year of sea level equivalent by satellite gravity data. A key issue for the understanding of ice mass balance is the separation of secular and interannual variations. For this aim, one would strongly benefit from longer uninterrupted time series of gravity field variations (10 years or more). An accuracy of 0.01 mm/year for geoid time variability with a spatial resolution of 100 km would improve the separability of ice mass balance from mass change due to glacial isostatic adjustment and enable the determination of regional variations in ice mass balance within the ice sheets. Thereby the determination of ice compaction is critical for the exploitation of such high accuracy data. A further benefit of improved gravity field models from future satellite missions would be the improvement of the height reference in the polar areas, which is important for the study of coastal ice processes. Sea ice thickness determination and modelling of ice bottom topography could be improved as well.
AB - An overview of advances in ice research which can be expected from future satellite gravity missions is given. We compare present and expected future accuracies of the ice mass balance of Antarctica which might be constrained to 0.1-0.3 mm/year of sea level equivalent by satellite gravity data. A key issue for the understanding of ice mass balance is the separation of secular and interannual variations. For this aim, one would strongly benefit from longer uninterrupted time series of gravity field variations (10 years or more). An accuracy of 0.01 mm/year for geoid time variability with a spatial resolution of 100 km would improve the separability of ice mass balance from mass change due to glacial isostatic adjustment and enable the determination of regional variations in ice mass balance within the ice sheets. Thereby the determination of ice compaction is critical for the exploitation of such high accuracy data. A further benefit of improved gravity field models from future satellite missions would be the improvement of the height reference in the polar areas, which is important for the study of coastal ice processes. Sea ice thickness determination and modelling of ice bottom topography could be improved as well.
KW - Geoid time variation
KW - Ice mass balance
KW - Ice thickness
KW - Satellite gravity missions
KW - Sea level change
UR - http://www.scopus.com/inward/record.url?scp=30344463851&partnerID=8YFLogxK
U2 - 10.1007/s11038-004-8213-5
DO - 10.1007/s11038-004-8213-5
M3 - Review article
AN - SCOPUS:30344463851
VL - 94
SP - 83
EP - 91
JO - Earth, moon and planets
JF - Earth, moon and planets
SN - 0167-9295
IS - 1-2
ER -