منابع مشابه
Time-dependent Seismic Tomography of Geothermal Systems
Temporal changes in seismic wave speeds in the Earth’s crust have been measured at several geothermal areas, notably The Geysers in California, in studies that used three-dimensional seismic tomography. These studies used conventional tomography methods to invert seismic-wave arrival time data sets for different epochs independently and assumed that any differences in the derived structures ref...
متن کاملTravel Time Inversion in Seismic Tomography
The word tomography finds its origins in the two Greek words tomos, meaning section, and graphy, which translates as drawing. There are many different types of tomography used in many sciences such as medicine, biology, materials science and geology. The basic idea of tomography in all of its uses is to obtain a cross-section of an object which will then be used to infer various facts regarding...
متن کاملSeismic Tomography
The inversion of seismic travel-time data for radially varying media was initially investigated by Herglotz, Wiechert, and Bateman (the HWB method) in the early part of the 20th century [1]. Tomographic inversions for laterally varying media began in seismology starting in the 1970's. This included early work by Aki, Christoffersson, and Husebye who developed an inversion technique for estimati...
متن کاملTime-dependent Seismic Tomography and Its Application to the Coso Geothermal Area, 1996-2006
Measurements of temporal changes in Earth structure are commonly determined using localearthquake tomography computer programs that invert multiple seismic-wave arrival time data sets separately and assume that any differences in the structural results arise from real temporal variations. This assumption is dangerous because the results of repeated tomography experiments would differ even if th...
متن کاملTime-resolved seismic tomography detects magma intrusions at Mount Etna.
The continuous volcanic and seismic activity at Mount Etna makes this volcano an important laboratory for seismological and geophysical studies. We used repeated three-dimensional tomography to detect variations in elastic parameters during different volcanic cycles, before and during the October 2002-January 2003 flank eruption. Well-defined anomalous low P- to S-wave velocity ratio volumes we...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2010
ISSN: 0956-540X
DOI: 10.1111/j.1365-246x.2010.04668.x