Estimating local Vp/Vs ratios within similar earthquake clusters

Guoqing Lin, Peter Shearer

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

We develop and test a method to estimate local Vp/Vs, ratios for compact similar earthquake clusters using the precise P and S differential times obtained using waveform cross-correlation. We demonstrate how our technique works using synthetic data and evaluate likely errors arising from near-source takeoff angle differences between P and S waves. We use a robust misfit function method to compute Vp/Vs ratios for both synthetic data sets and several similar event clusters in southern California, and use a bootstrap resampling approach to estimate standard errors for real data. Our technique has higher resolution for near-source Vp/Vs ratios than typical tomographic inversion methods and provides constraints on near-fault rock properties.

Original languageEnglish (US)
Pages (from-to)379-388
Number of pages10
JournalBulletin of the Seismological Society of America
Volume97
Issue number2
DOIs
StatePublished - Apr 2007
Externally publishedYes

Fingerprint

Earthquakes
estimating
earthquakes
earthquake
Southern California
takeoff
Takeoff
estimates
P waves
cross correlation
S waves
waveforms
Rocks
rock property
rocks
inversions
P-wave
S-wave
high resolution
method

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Estimating local Vp/Vs ratios within similar earthquake clusters. / Lin, Guoqing; Shearer, Peter.

In: Bulletin of the Seismological Society of America, Vol. 97, No. 2, 04.2007, p. 379-388.

Research output: Contribution to journalArticle

@article{48129591efea4e39b462d958809c843f,
title = "Estimating local Vp/Vs ratios within similar earthquake clusters",
abstract = "We develop and test a method to estimate local Vp/Vs, ratios for compact similar earthquake clusters using the precise P and S differential times obtained using waveform cross-correlation. We demonstrate how our technique works using synthetic data and evaluate likely errors arising from near-source takeoff angle differences between P and S waves. We use a robust misfit function method to compute Vp/Vs ratios for both synthetic data sets and several similar event clusters in southern California, and use a bootstrap resampling approach to estimate standard errors for real data. Our technique has higher resolution for near-source Vp/Vs ratios than typical tomographic inversion methods and provides constraints on near-fault rock properties.",
author = "Guoqing Lin and Peter Shearer",
year = "2007",
month = "4",
doi = "10.1785/0120060115",
language = "English (US)",
volume = "97",
pages = "379--388",
journal = "Bulletin of the Seismological Society of America",
issn = "0037-1106",
publisher = "Seismological Society of America",
number = "2",

}

TY - JOUR

T1 - Estimating local Vp/Vs ratios within similar earthquake clusters

AU - Lin, Guoqing

AU - Shearer, Peter

PY - 2007/4

Y1 - 2007/4

N2 - We develop and test a method to estimate local Vp/Vs, ratios for compact similar earthquake clusters using the precise P and S differential times obtained using waveform cross-correlation. We demonstrate how our technique works using synthetic data and evaluate likely errors arising from near-source takeoff angle differences between P and S waves. We use a robust misfit function method to compute Vp/Vs ratios for both synthetic data sets and several similar event clusters in southern California, and use a bootstrap resampling approach to estimate standard errors for real data. Our technique has higher resolution for near-source Vp/Vs ratios than typical tomographic inversion methods and provides constraints on near-fault rock properties.

AB - We develop and test a method to estimate local Vp/Vs, ratios for compact similar earthquake clusters using the precise P and S differential times obtained using waveform cross-correlation. We demonstrate how our technique works using synthetic data and evaluate likely errors arising from near-source takeoff angle differences between P and S waves. We use a robust misfit function method to compute Vp/Vs ratios for both synthetic data sets and several similar event clusters in southern California, and use a bootstrap resampling approach to estimate standard errors for real data. Our technique has higher resolution for near-source Vp/Vs ratios than typical tomographic inversion methods and provides constraints on near-fault rock properties.

UR - http://www.scopus.com/inward/record.url?scp=34547530025&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547530025&partnerID=8YFLogxK

U2 - 10.1785/0120060115

DO - 10.1785/0120060115

M3 - Article

AN - SCOPUS:34547530025

VL - 97

SP - 379

EP - 388

JO - Bulletin of the Seismological Society of America

JF - Bulletin of the Seismological Society of America

SN - 0037-1106

IS - 2

ER -