Numerical experiments for seismic tomography using the Singular Value Decomposition (SVD) technique

Megumi Nakamura, Tomohiro Hayashida, Hiroshi Takenaka, Hiroshi Shimizu, Sadaomi Suzuki

Research output: Contribution to journalArticle

Abstract

The purpose of this study is to learn how to consider setting the borehole and arrangement of the measuring instruments for seismic tomography. For this purpose we made an underground structure model of Unzen Volcano based on the results of previous studies, and simulated the seismic tomography identifying this model with the true structure because one of some plans in "Scientific drilling project at Unzen Volcano" is seismic tomography by using a borehole approaching conduit" We located sources and receivers along the borehole and at the surface, and calculated synthetic seismograms at the receiver positions by a 2-D finite difference method. We measured the first P arrival time in the synthetic seismograms, and constructed the observational equation for seismic tomography. We investigated the solution of this equation by the Singular Value Decomposition (SVD) technique. We found we can consider borehole location and arrangement of sources and receivers through such a simulation by Singular values and eigenvalue that got in this way.

Original languageEnglish
Pages (from-to)9-18
Number of pages10
JournalScience Reports of the Kyushu University, Department of Earth and Planetary Sciences
Volume21
Issue number1
Publication statusPublished - Dec 2000
Externally publishedYes

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seismic tomography
boreholes
borehole
tomography
decomposition
receivers
synthetic seismogram
seismograms
volcanoes
volcano
experiment
underground structures
eigenvalue
finite difference method
arrival time
drilling
arrivals
eigenvalues
simulation

ASJC Scopus subject areas

  • Geology

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Numerical experiments for seismic tomography using the Singular Value Decomposition (SVD) technique. / Nakamura, Megumi; Hayashida, Tomohiro; Takenaka, Hiroshi; Shimizu, Hiroshi; Suzuki, Sadaomi.

In: Science Reports of the Kyushu University, Department of Earth and Planetary Sciences, Vol. 21, No. 1, 12.2000, p. 9-18.

Research output: Contribution to journalArticle

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