An imaging technique for subsurface faults using teleseismic-wave records II

Improvement in the detectability of subsurface faults

Takumi Murakoshi, Hiroshi Takenaka, Daisuke Suetsugu

Research output: Contribution to journalArticle

Abstract

We have developed an imaging algorithm for subsurface faults on the basis of the steepest descent method in our previous paper. In this paper we introduce two new techniques, the multi-event stacking and multi-master stacking, to improve detectability for subsurface faults. The multi-event stacking is a technique using data from plural earthquakes with different incident angles. The multi-master stacking is a technique using data of a single earthquake, in which the images obtained by employing different master receiver are stacked. We examined the feasibility of our approach using several trial models and synthetic data with different signal to noise ratios, different pulse durations and different incident angles in the two dimensional SH cases. In the numerical experiments, we could recover the image of the subsurface fault for all the trial models used, which indicates our method has a potential for sensing real subsurface faults.

Original languageEnglish
Pages (from-to)3-11
Number of pages9
JournalEarth, Planets and Space
Volume52
Issue number1
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

teleseismic wave
stacking
imaging techniques
earthquakes
steepest descent method
pulse duration
signal to noise ratios
receivers
earthquake
signal-to-noise ratio
experiment
method
trial

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

An imaging technique for subsurface faults using teleseismic-wave records II : Improvement in the detectability of subsurface faults. / Murakoshi, Takumi; Takenaka, Hiroshi; Suetsugu, Daisuke.

In: Earth, Planets and Space, Vol. 52, No. 1, 2000, p. 3-11.

Research output: Contribution to journalArticle

@article{26022ae4fd4c48d2ba46b2e9941454f9,
title = "An imaging technique for subsurface faults using teleseismic-wave records II: Improvement in the detectability of subsurface faults",
abstract = "We have developed an imaging algorithm for subsurface faults on the basis of the steepest descent method in our previous paper. In this paper we introduce two new techniques, the multi-event stacking and multi-master stacking, to improve detectability for subsurface faults. The multi-event stacking is a technique using data from plural earthquakes with different incident angles. The multi-master stacking is a technique using data of a single earthquake, in which the images obtained by employing different master receiver are stacked. We examined the feasibility of our approach using several trial models and synthetic data with different signal to noise ratios, different pulse durations and different incident angles in the two dimensional SH cases. In the numerical experiments, we could recover the image of the subsurface fault for all the trial models used, which indicates our method has a potential for sensing real subsurface faults.",
author = "Takumi Murakoshi and Hiroshi Takenaka and Daisuke Suetsugu",
year = "2000",
language = "English",
volume = "52",
pages = "3--11",
journal = "Earth, Planets and Space",
issn = "1880-5981",
publisher = "Terra Scientific Publishing Company",
number = "1",

}

TY - JOUR

T1 - An imaging technique for subsurface faults using teleseismic-wave records II

T2 - Improvement in the detectability of subsurface faults

AU - Murakoshi, Takumi

AU - Takenaka, Hiroshi

AU - Suetsugu, Daisuke

PY - 2000

Y1 - 2000

N2 - We have developed an imaging algorithm for subsurface faults on the basis of the steepest descent method in our previous paper. In this paper we introduce two new techniques, the multi-event stacking and multi-master stacking, to improve detectability for subsurface faults. The multi-event stacking is a technique using data from plural earthquakes with different incident angles. The multi-master stacking is a technique using data of a single earthquake, in which the images obtained by employing different master receiver are stacked. We examined the feasibility of our approach using several trial models and synthetic data with different signal to noise ratios, different pulse durations and different incident angles in the two dimensional SH cases. In the numerical experiments, we could recover the image of the subsurface fault for all the trial models used, which indicates our method has a potential for sensing real subsurface faults.

AB - We have developed an imaging algorithm for subsurface faults on the basis of the steepest descent method in our previous paper. In this paper we introduce two new techniques, the multi-event stacking and multi-master stacking, to improve detectability for subsurface faults. The multi-event stacking is a technique using data from plural earthquakes with different incident angles. The multi-master stacking is a technique using data of a single earthquake, in which the images obtained by employing different master receiver are stacked. We examined the feasibility of our approach using several trial models and synthetic data with different signal to noise ratios, different pulse durations and different incident angles in the two dimensional SH cases. In the numerical experiments, we could recover the image of the subsurface fault for all the trial models used, which indicates our method has a potential for sensing real subsurface faults.

UR - http://www.scopus.com/inward/record.url?scp=0034022231&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034022231&partnerID=8YFLogxK

M3 - Article

VL - 52

SP - 3

EP - 11

JO - Earth, Planets and Space

JF - Earth, Planets and Space

SN - 1880-5981

IS - 1

ER -