Location

San Diego, California

Session Start Date

3-26-2001

Session End Date

3-31-2001

Abstract

The paper attempts to illustrate the potential application of simulation techniques for interpretation and characterization of microtremors. Simulations are performed with two types of source distribution models, both involving a large number of Dirac wave type sources randomly activated on the surface of a horizontally layered ground underlain by the half-space. Attempt is made to utilize the technique for the interpretation of microtremors at KASAI site in Chiba prefecture (Japan). The site has a deep base layer and weak impedance contrast. The parameter RF, defined as the ratio between horizontal and vertical input forces at the source, is used as a measure of the proportion of Love wave components in combination with Rayleigh waves contained in simulated microtremors. The microtremor records at KASAI seem to correspond to the simulation with RF =O. 1, indicating predominance of the Rayleigh wave components.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-26-2001

Document Version

Final Version

Rights

© 2001 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Mar 26th, 12:00 AM Mar 31st, 12:00 AM

Characterization of Microtremor Records Using Simulated Microtremors

San Diego, California

The paper attempts to illustrate the potential application of simulation techniques for interpretation and characterization of microtremors. Simulations are performed with two types of source distribution models, both involving a large number of Dirac wave type sources randomly activated on the surface of a horizontally layered ground underlain by the half-space. Attempt is made to utilize the technique for the interpretation of microtremors at KASAI site in Chiba prefecture (Japan). The site has a deep base layer and weak impedance contrast. The parameter RF, defined as the ratio between horizontal and vertical input forces at the source, is used as a measure of the proportion of Love wave components in combination with Rayleigh waves contained in simulated microtremors. The microtremor records at KASAI seem to correspond to the simulation with RF =O. 1, indicating predominance of the Rayleigh wave components.