Detection of postseismic fault-zone collapse following the Landers earthquake
Article Abstract:
Maps of the postseismic deformation field after the Landers earthquake on Jun. 28, 1992 reveal that two distinct deformations have occurred as a result of the earthquake. These deformations include afterslip at depth on the fault that ruptured in the earthquake, and shortening normal to the fault zone. The latter deformation suggests the closure of dilatant cracks and fluid expulsion from a temporarily over-pressured fault zone. Satellite radar interferometry aids mapping of the postseismic deformation field and understanding of lithospheric relaxation processes.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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The displacement field of the Landers earthquake mapped by radar interferometry
Article Abstract:
The observations of the earth movements by synthetic aperture radar (SAR) interferometry, after the 1992 earthquake in Landers, California, was combined with topographic information obtained by the ERS-1 satellite prior to and succeeding the earthquake, to understand the changes in the topography. The SAR interferometry is an effective geodetic tool for denser spatial sampling (100 m per pixel) and more accurate than previous surveying procedures and space imaging techniques.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Deflation of Mount Etna monitored by spaceborne radar interferometry
Article Abstract:
Spaceborne radar interferometry is used to determine the long-term volcano- wide surface deformation and the related volume change. Volcanic eruptions are preceded by volcano-wide deflation explained by a simple model of pressure change in a sphere lying in an elastic half-space. With time the modelled deformation increases until the end of the eruptions. Data from Mount Etna is analysed validating the technique for volcano monitoring.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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