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Teleseismic tomography of the compressional wave velocity structure beneath the Long Valley region, California

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Teleseismic tomography of the compressional wave velocity structure beneath the Long Valley region, California; 1990; Article; Journal; Journal of Geophysical Research; Dawson, P. B.; Evans, J. R.; Iyer, H. M.

Summary

In 1982 and 1984 the US Geological Survey used several seismic networks, totaling over 90 stations, to record teleseismic P waves and measure travel time residuals in an area centered on the Long Valley caldera. The travel time residuals have been inverted to obtain a three-dimensional image of the velocity structure with resolution of 5-6 km to depths of 70 km beneath the array. Direct inversion of these data indicates that the 2- to 4-km-thick low-velocity caldera fill contaminates the signal from any midcrustal velocity anomalies beneath the caldera. Two methods were used to strip the effects of the upper crust from the travel time residuals and the resulting "stripped' models show two well-resolved midcrustal low-velocity bodies [...]

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Type Scheme Key
local-index unknown 70016377
local-pk unknown 70016377
series unknown Journal of Geophysical Research

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journalJournal of Geophysical Research
parts
typevolume
value95
typeissue
valueB7
languageEnglish
citationTypeArticle

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