Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings
Present-day glacial activities and the current variability of the Antarctic ice volume can cause variations in the long-wavelength gravity field as a consequence of transient viscoelastic responses in the mantle. The azimuthal dependence of the secular variations of the gravitational potential are s...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19870064213 2023-05-15T14:01:08+02:00 Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings Yuen, David A. Gasperini, Paolo Sabadini, Roberto Boschi, Enzo Unclassified, Unlimited, Publicly available Aug 1, 1987 http://ntrs.nasa.gov/search.jsp?R=19870064213 unknown http://ntrs.nasa.gov/search.jsp?R=19870064213 Accession ID: 87A51487 Copyright Other Sources 46 Geophysical Research Letters; 14; 812-815 1987 ftnasantrs 2012-02-15T17:18:08Z Present-day glacial activities and the current variability of the Antarctic ice volume can cause variations in the long-wavelength gravity field as a consequence of transient viscoelastic responses in the mantle. The azimuthal dependence of the secular variations of the gravitational potential are studied and it is found that the nonaxisymmetric contributions are more important for recent glacial retreats than for Pleistocene deglaciation. Changes in land-based ice covering Antarctica can be detected by monitoring satellite orbits and their sensitivity to variations in gravitational harmonic for degree l greater than 3. Resonances in satellite orbits may be useful for detecting these azimuthally-dependent gravity signals. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
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NASA Technical Reports Server (NTRS) |
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46 |
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46 Yuen, David A. Gasperini, Paolo Sabadini, Roberto Boschi, Enzo Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings |
topic_facet |
46 |
description |
Present-day glacial activities and the current variability of the Antarctic ice volume can cause variations in the long-wavelength gravity field as a consequence of transient viscoelastic responses in the mantle. The azimuthal dependence of the secular variations of the gravitational potential are studied and it is found that the nonaxisymmetric contributions are more important for recent glacial retreats than for Pleistocene deglaciation. Changes in land-based ice covering Antarctica can be detected by monitoring satellite orbits and their sensitivity to variations in gravitational harmonic for degree l greater than 3. Resonances in satellite orbits may be useful for detecting these azimuthally-dependent gravity signals. |
format |
Other/Unknown Material |
author |
Yuen, David A. Gasperini, Paolo Sabadini, Roberto Boschi, Enzo |
author_facet |
Yuen, David A. Gasperini, Paolo Sabadini, Roberto Boschi, Enzo |
author_sort |
Yuen, David A. |
title |
Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings |
title_short |
Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings |
title_full |
Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings |
title_fullStr |
Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings |
title_full_unstemmed |
Azimuthal dependence in the gravity field induced by recent and past cryospheric forcings |
title_sort |
azimuthal dependence in the gravity field induced by recent and past cryospheric forcings |
publishDate |
1987 |
url |
http://ntrs.nasa.gov/search.jsp?R=19870064213 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19870064213 Accession ID: 87A51487 |
op_rights |
Copyright |
_version_ |
1766270738081251328 |