The seismic signatures of the 2009 Shiaolin landslide in Taiwan

被引：31

作者：

Feng, Z. ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Soil & Water Conservat, Taichung 402, Taiwan

来源：

NATURAL HAZARDS AND EARTH SYSTEM SCIENCES | 2011年 / 11卷 / 05期

基金：

美国国家科学基金会;

关键词：

SPECTRAL-DECOMPOSITION TECHNIQUES; IDENTIFICATION; MONTSERRAT;

D O I：

10.5194/nhess-11-1559-2011

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Shiaolin landslide occurred on 9 August 2009 after Typhoon Morakot struck Taiwan, claiming over 400 lives. The seismic signals produced by the landslide were recorded by broadband seismic stations in Taiwan. The time-frequency spectra for these signals were obtained by the Hilbert-Huang transform (HHT) and were analyzed to obtain the seismic characteristics of the landslide. Empirical mode decomposition (EMD) was applied to differentiate weak surface-wave signals from noise and to estimate the surface-wave velocities in the region. The surface-wave velocities were estimated using the fifth intrinsic mode function (IMF 5) obtained from the EMD. The spectra of the earthquake data were compared. The main frequency content of the seismic waves caused by the Shiaolin landslide were in the range of 0.5 to 1.5 Hz. This frequency range is smaller than the frequency ranges of other earthquakes. The spectral analysis of surface waves (SASW) method is suggested for characterizing the shear-wave velocities of the strata in the region.

引用

页码：1559 / 1569

页数：11

共 21 条

[1]

AnCAD Inc., 2010, VIS SIGN REF GUID VE

[2]

BERROCAL J, 1978, NATURE, V275, P533, DOI 10.1038/275533a0

[3]

Central Geological Survey, GEOL INV REP MARCH 4

[4]

Chen P.-T., 2006, INVESTIGATION REPORT

[5]

Chen S.C., 2009, J CHINESE SOIL WATER, V40, P377

[6]

Chen SC., 2009, J CHINESE SOIL WATER, V40, P359

[7] Spectral-decomposition techniques for the identification of radon anomalies temporally associated with earthquakes occurring in the UK in 2002 and 2008 [J].

Crockett, R. G. M. ;

Gillmore, G. K. .

NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, 2010, 10 (06) :1079-1084

[8] Spectral-decomposition techniques for the identification of periodic and anomalous phenomena in radon time-series [J].

Crockett, R. G. M. ;

Perrier, F. ;

Richon, P. .

NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, 2010, 10 (03) :559-564

[9] Seismic characterization of pyroclastic flow activity at Soufriere Hills Volcano, Montserrat, 8 January 2007 [J].

De Angelis, S. ;

Bass, V. ;

Hards, V. ;

Ryan, G. .

NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, 2007, 7 (04) :467-472

[10] Analysis of rock-fall and rock-fall avalanche seismograms in the French Alps [J].

Deparis, J. ;

Jongmans, D. ;

Cotton, F. ;

Baillet, L. ;

Thouvenot, F. ;

Hantz, D. .

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2008, 98 (04) :1781-1796

← 1 2 3 →