Predictions of vertical uplift caused by changing polar ice volumes on a viscoelastic earth

Details Predictions of vertical uplift caused by changing polar ice volumes on a viscoelastic earth Predictions of vertical uplift caused by changing polar ice volumes on a viscoelastic earth

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..977w&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 8, p. 977-980

Physics

53

Antarctic Regions, Displacement Measurement, Earth Crust, Greenland, Ice, Ice Environments, Vertical Motion, Accumulations, Evaporation, Viscoelasticity

Scientific paper

Measurements of crustal uplift from bedrock around the edges of Antarctica or Greenland could help constrain the mass balance of those ice caps. Present-day changes in ice could cause vertical displacement rates of several mm/yr around Antarctica and up to 10-15 mm/yr around Greenland. Horizontal displacement rates are likely to be about 1/3 the vertical rates. The viscoelastic response of the earth to past changes in ice could cause uplift rates that are several times larger. By measuring both gravity and vertical displacements, it is possible to remove the viscoelastic effects, so that the observations can be used to constrain present-day thickness changes.

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