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Keywords:

  • seismic monitoring;
  • geomorphic processes;
  • hillslope activity;
  • river processes

From 1999 to 2006, Taiwan's Chenyoulan watershed experienced 48,000 landslides, rock avalanches, and other geomorphic events, the bulk of which are thought to have been triggered by the powerful tropical cyclones that batter the island each summer. Rock slides and other geomorphic events are a natural hazard, but they are also the source for some of the raw sediment that winds its way downstream, affecting watershed erosion and sedimentation dynamics. From both of these perspectives, having a handle on when and where these geomorphic events occur is important.