Post-seismic mantle relaxation in the Central Nevada seismic belt detected by InSAR: Implication for Basin and range dynamics

N. Gourmelen, F. Amelung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Acceleration of deformation during the Holocene and post-seismic deformation have been the two favored mechanisms to explain the high present-day deformation rate in the Central Nevada Seismic Belt (CNSB). Discriminating between the two mechanisms is critical to understand the dynamics of the Basin and Range lithosphere. Interferometric Synthetic Aperture radar data (InSAR) acquired between 1992 and 2000 detect a broad area of uplift at a rate of 2-3 mm/yr in the CNSB. The observed uplift can be explained by a model of post-seismic relaxation following the 1915-1954. Deformation is caused by flow in the mantle underlying an elastic crust. The results lead to a broad agreement between geologic and geodetic strain indicators for this portion of the Basin and Range and support the simple tectonic picture in which the Central Basin and Range between the CNSB and the Wasatch fault behaves as a rigid block. The results do no support an elevated seismic potential for the CNSB.

Original languageEnglish (US)
Title of host publicationProceedings of Fringe 2005 Workshop
Edition610
StatePublished - Feb 1 2006
EventFringe 2005 Workshop - Frascati, Italy
Duration: Nov 28 2005Dec 2 2005

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
Number610
ISSN (Print)0379-6566

Other

OtherFringe 2005 Workshop
CountryItaly
CityFrascati
Period11/28/0512/2/05

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science

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