Satellite gravity gradiometry: Secular gravity field change over polar regions
The ESA Gravity and steady state Ocean and Circulation Explorer, GOCE, mission will utilise the principle of satellite gravity gradiometry to measure the long to medium wavelengths in the static gravity field. Previous studies have demonstrated the low sensitivity of GOCE to ocean tides and to tempo...
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ftunivtasecite:oai:ecite.utas.edu.au:82149 2023-05-15T14:02:31+02:00 Satellite gravity gradiometry: Secular gravity field change over polar regions Moore, P King, MA 2010 https://doi.org/10.1016/j.jog.2010.01.007 http://ecite.utas.edu.au/82149 en eng x http://dx.doi.org/10.1016/j.jog.2010.01.007 Moore, P and King, MA, Satellite gravity gradiometry: Secular gravity field change over polar regions, Journal of Geodynamics, 49, (5) pp. 247-253. ISSN 0264-3707 (2010) [Refereed Article] http://ecite.utas.edu.au/82149 Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified Refereed Article PeerReviewed 2010 ftunivtasecite https://doi.org/10.1016/j.jog.2010.01.007 2019-12-13T21:47:03Z The ESA Gravity and steady state Ocean and Circulation Explorer, GOCE, mission will utilise the principle of satellite gravity gradiometry to measure the long to medium wavelengths in the static gravity field. Previous studies have demonstrated the low sensitivity of GOCE to ocean tides and to temporal gravity field variations at the seasonal scale. In this study we investigate the sensitivity of satellite gradiometry missions such as GOCE to secular signals due to ice-mass change observed in Greenland and Antarctica. We show that unaccounted ice-mass change signal is likely to increase GOCE-related noise but that the expected present-day polar ice-mass change is below the GOCE sensitivity for an 18-month mission. Furthermore, 2-3 orders of magnitude improvement in the gradiometry in future gradiometer missions is necessary to detect ice-mass change with sufficient accuracy at the spatial resolution of interest. 2010 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Antarc* Antarctica Greenland eCite UTAS (University of Tasmania) Greenland Journal of Geodynamics 49 5 247 253 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
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English |
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Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified |
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Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified Moore, P King, MA Satellite gravity gradiometry: Secular gravity field change over polar regions |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified |
description |
The ESA Gravity and steady state Ocean and Circulation Explorer, GOCE, mission will utilise the principle of satellite gravity gradiometry to measure the long to medium wavelengths in the static gravity field. Previous studies have demonstrated the low sensitivity of GOCE to ocean tides and to temporal gravity field variations at the seasonal scale. In this study we investigate the sensitivity of satellite gradiometry missions such as GOCE to secular signals due to ice-mass change observed in Greenland and Antarctica. We show that unaccounted ice-mass change signal is likely to increase GOCE-related noise but that the expected present-day polar ice-mass change is below the GOCE sensitivity for an 18-month mission. Furthermore, 2-3 orders of magnitude improvement in the gradiometry in future gradiometer missions is necessary to detect ice-mass change with sufficient accuracy at the spatial resolution of interest. 2010 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Moore, P King, MA |
author_facet |
Moore, P King, MA |
author_sort |
Moore, P |
title |
Satellite gravity gradiometry: Secular gravity field change over polar regions |
title_short |
Satellite gravity gradiometry: Secular gravity field change over polar regions |
title_full |
Satellite gravity gradiometry: Secular gravity field change over polar regions |
title_fullStr |
Satellite gravity gradiometry: Secular gravity field change over polar regions |
title_full_unstemmed |
Satellite gravity gradiometry: Secular gravity field change over polar regions |
title_sort |
satellite gravity gradiometry: secular gravity field change over polar regions |
publisher |
x |
publishDate |
2010 |
url |
https://doi.org/10.1016/j.jog.2010.01.007 http://ecite.utas.edu.au/82149 |
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Greenland |
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Greenland |
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Antarc* Antarctica Greenland |
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Antarc* Antarctica Greenland |
op_relation |
http://dx.doi.org/10.1016/j.jog.2010.01.007 Moore, P and King, MA, Satellite gravity gradiometry: Secular gravity field change over polar regions, Journal of Geodynamics, 49, (5) pp. 247-253. ISSN 0264-3707 (2010) [Refereed Article] http://ecite.utas.edu.au/82149 |
op_doi |
https://doi.org/10.1016/j.jog.2010.01.007 |
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Journal of Geodynamics |
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49 |
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5 |
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247 |
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253 |
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1766272817889804288 |