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On transient rheology and glacial isostasyThe effect of transient creep on the inference of long-term mantle viscosity is investigated using theoretical predictions from self-gravitating, layered earth models with Maxwell, Burgers' body, and standard linear solid rheologies. The interaction between transient and steady-state rheologies is studied. The responses of the standard linear solid and Burgers' body models to transient creep in the entire mantle, and of the Burgers' body and Maxwell models to creep in the lower mantle are described. The models' responses are examined in terms of the surface displacement, free air gravity anomaly, wander of the rotation pole, and the secular variation of the degree 2 zonal coefficient of the earth's gravitational potential field. The data reveal that transient creep cannot operate throughout the entire mantle.
Document ID
19870033573
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Yuen, David A.
(Colorado, University; Cooperative Institute for Research in the Environmental Sciences, Boulder, United States)
Sabadini, Roberto C. A.
(Bologna, Universita Italy)
Gasperini, Paolo
(Istituto Nazionale di Geofisica Rome, Italy)
Boschi, Enzo
(Istituto Nazionale di Geofisica, Rome; Bologna, Universita Italy)
Date Acquired
August 13, 2013
Publication Date
October 1, 1986
Publication Information
Publication: Journal of Geophysical Research
Volume: 91
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
87A20847
Funding Number(s)
CONTRACT_GRANT: CNR-PSN-84,09
CONTRACT_GRANT: NAG5-400
CONTRACT_GRANT: NSF EAR-85-11200
CONTRACT_GRANT: NSF EAR-82-14094
Distribution Limits
Public
Copyright
Other

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