The influence of a ductile crustal zone on glacial isostatic adjustment: Geodetic observables along the US east coast

Authors
Di Donato, G Mitrovica, JX Sabadini, R Vermeersen, LLA
Citation
G. Di Donato et al., The influence of a ductile crustal zone on glacial isostatic adjustment: Geodetic observables along the US east coast, GEOPHYS R L, 27(18), 2000, pp. 3017-3020
Citations number
12
Categorie Soggetti
Earth Sciences
Journal title
GEOPHYSICAL RESEARCH LETTERS
ISSN journal
00948276 → ACNP
Volume
27
Issue
18
Year of publication
2000
Pages
3017 - 3020
Database
ISI
SICI code
0094-8276(20000915)27:18<3017:TIOADC>2.0.ZU;2-Y
Abstract
We consider the influence of a 15 km thick ductile crustal layer of viscosi ty 10(18) Pa s embedded in an elastic 80 km lithosphere on predictions of o ngoing glacial isostatic adjustment (henceforth 'GIA') along the U.S. east coast. Crustal velocities are perturbed by 0.5 mm/yr, or more, by the inclu sion 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 geog raphic pattern that is similar to residual trends evident in previous GIA c orrections of tide gauge records along this coast.