Material versus local incompressibility and its influence on glacial-isostatic adjustment
نویسندگان
چکیده
منابع مشابه
Glacial isostatic adjustment in the static gravity field of Fennoscandia
In the central part of Fennoscandia, the crust is currently rising, because of the delayed response of the viscous mantle to melting of the Late Pleistocene ice sheet. This process, called Glacial Isostatic Adjustment (GIA), causes a negative anomaly in the present-day static gravity field as isostatic equilibrium has not been reached yet. Several studies have tried to use this anomaly as a con...
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The glacial isostatic adjustment of the UK region has been considered in a number of recent studies. We have revisited this problem in order to: (i) highlight some key issues with regard to limitations in the ice modelling approach adopted in these studies and (ii) consider the constraints provided from observations of crustal motion available via continuous global positioning system monitoring...
متن کاملIsostatic compensation on a continental scale: local versus regional mechanisms
Using the techniques of linear and quadratic programming, it can be shown that the isostatic response function for the continental United States, computed by Lewis & Dorman (1970), is incompatible with any local compensation model that involves only negative density contrasts beneath topographic loads. We interpret the need for positive densities as indicating that compensation is regional rath...
متن کاملGlacial isostatic adjustment and the radial viscosity profile from inverse modeling
[1] A formal inverse procedure is used to infer radial mantle viscosity profiles from several observations related to the glacial isostatic adjustment process. The data sets consist of Late Pleistocene and Holocene sea level data from Scandinavia, the Barents Sea, Central Europe, Canada, and the far field, as well as observations of changes in the Earth’s rotation and gravitational field, and p...
متن کاملGlacial isostatic adjustment model with composite 3-D Earth rheology for Fennoscandia
Wouter van der Wal,1 Auke Barnhoorn,2 Paolo Stocchi,3,4 Sofie Gradmann,5 Patrick Wu,6 Martyn Drury7 and Bert Vermeersen1,3 1Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands. E-mail: [email protected] 2Faculty of Civil Engineering and Geosciences, Delft University of Technology, The Netherlands 3NIOZ Royal Netherlands Institute ...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2001
ISSN: 0956-540X,1365-246X
DOI: 10.1046/j.1365-246x.2001.01230.x