Premium
The influence of a ductile crustal zone on glacial isostatic adjustment: Geodetic observables along the U.S. East Coast
Author(s) -
Di Donato G.,
Mitrovica J. X.,
Sabadini R.,
Vermeersen L. L. A.
Publication year - 2000
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 - 10.1029/2000gl011390
Subject(s) - post glacial rebound , geology , lithosphere , geodetic datum , tide gauge , glacial period , sea level , residual , east coast , seismology , geodesy , oceanography , geomorphology , tectonics , algorithm , computer science
We consider the influence of a 15 km thick ductile crustal layer of viscosity 10 18 Pa s embedded in an elastic 80 km lithosphere on predictions of on‐going glacial isostatic adjustment (henceforth ‘GIA’) along the U.S. east coast. Crustal velocities are perturbed by 0.5 mm/yr, or more, by the inclusion of the ductile layer. Furthermore, perturbations in predictions of sea‐level rates along the U.S. east coast due to the ductile layer have a geographic pattern that is similar to residual trends evident in previous GIA corrections of tide gauge records along this coast.