Seismic recordings of landslides caused by Typhoon Talas (2011),
Japan
Geophysical Research Letters, 39 (13):
L13301+ (Jul 7, 2012)DOI: 10.1029/2012GL052174
Abstract
Large deep-seated landslides occurred in Nara, Wakayama, and Mie prefectures
of western Japan when Typhoon Talas passed through the region on
September 3-4, 2011. Signals of large landslides have been recorded
by seismic networks around the world, and overall force estimates
have been previously determined for large landslides using long-period
waves. This study focuses on the high-frequency waveforms and presents
signals of 18 landslides caused by Typhoon Talas (2011). The location
of the landslides can be determined by a seismological back-projection
technique and these locations correlate with the observed surface
features. We have found that the volumes of the landslide correlated
with an energy parameter derived from the seismic records.