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Postglacial rebound and transient rheology
Author(s) -
Peltier W. R.,
Yuen D. A.,
Wu P.
Publication year - 1980
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl007i010p00733
Subject(s) - rheology , transient (computer programming) , viscosity , geology , post glacial rebound , mantle (geology) , creep , geophysics , relaxation (psychology) , mechanics , thermodynamics , physics , glacial period , geomorphology , computer science , psychology , social psychology , operating system
We consider the possibility that significant effects due to transient creep might conceivably contaminate the measurement of mantle viscosity which one obtains from postglacial rebound data. A time domain mapping is employed which allows us to consider Maxwell and standard linear solids in which the viscosity is time dependent. This technique is used to investigate the impact which either of two recently proposed transient rheologies would have upon inferences of viscosity from isostatic adjustment data. The free decay regime relaxation data from a site near the center of the Laurentide depression (Richmond Gulf) are invoked to show that transient effects, if they exist at all, are most probably weak.