Seismic recordings of landslides caused by Typhoon Talas (2011), Japan

Abstract

Large deep-seated landslides occurred inNara, 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. © 2012. American Geophysical Union.