The Earth’s Free Spherical Oscillations of the Chile Earthquake-Reference-Cited by-同舟云学术

The Earth’s Free Spherical Oscillations of the Chile Earthquake

Published:2012-12 Issue: Volume:622-623 Page:1674-1681
ISSN:1662-8985
Container-title:Advanced Materials Research
language:
Short-container-title:AMR

Author:

Wu Ye¹,Yang Shu²,Ding Liang¹

Affiliation:

1. Institute of Disaster-Prevention Science and Technology

2. North China Institute of Science and Technology

Abstract

An M8.8 earthquake struck Chile on February 27, 2010 and the strong earthquake made continuous oscillation of the Earth. We studied the Earth’s free oscillations using observations of VHZ channel of China Digital Seismic Network (CDSN). Since the frequency response of seismograph in CDSN suppresses the information of low frequency signal, we do not need to remove the solid tide in our data processing. We extracted 76 clear spherical modes of (0S0, 0S2 to 0S76) of the Earth’s free oscillation and 78 harmonic modes and they are consistent and nearly same with the frequencies of the modes of Preliminary Reference Earth Model (PREM). Spectral splitting phenomenon is observed obviously in 0S2, 0S3, 0S4 and 1S2 free oscillation modes.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Link

https://www.scientific.net/AMR.622-623.1674.pdf

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