Crustal deformation at Long Valley Caldera, eastern California, 1992-1996 inferred from satellite radar interferometry

被引：24

作者：

Thatcher, W ^{[1
]}

Massonnet, D ^{[1
]}

机构：

[1] CTR NATL ETUD SPATIALES,F-31400 TOULOUSE,FRANCE

来源：

GEOPHYSICAL RESEARCH LETTERS | 1997年 / 24卷 / 20期

关键词：

D O I：

10.1029/97GL02597

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Satellite radar interferometric images of Long Valley caldera show a pattern of surface deformation that resembles that expected from analysis of an extensive suite of ground-based geodetic data. Images from 2 and 4 year intervals respectively are consistent with uniform movement rates determined from leveling surveys. Synthetic interferograms generated from ellipsoidal-inclusion source models based on inversion of the ground-based data show generally good agreement with the observed images. Two interferograms show evidence for a magmatic source southwest of the caldera in a region not covered by ground measurements. Poorer image quality in the 4 year interferogram indicates that temporal decorrelation of surface radar reflectors is progressively degrading the fringe pattern in the Long Valley region.

引用

页码：2519 / 2522

页数：4

共 8 条

[1] SURFACE DEFORMATION DUE TO INFLATION OF AN ARBITRARILY ORIENTED TRIAXIAL ELLIPSOIDAL CAVITY IN AN ELASTIC HALF-SPACE, WITH REFERENCE TO KILAUEA VOLCANO, HAWAII [J].