Early aftershocks of a M4.8 earthquake in Japan on 2003/11/30

Abstract

A seismogram and audio recording generated by an M4.8 earthquake in Japan on 2003/11/30. The seismogram is recorded by a nearby borehole station MYJH, which belongs to the Japanese Hi-Net , one of the best seismic network in the world. Similar to the Parkfield example, it also show many early aftershocks that were not reported in the standard earthquake catalog. Identifying those missing early aftershocks provide a new way to understand aftershock generation and the underlying physics of earthquake interaction ( Peng et al., GRL, 2006; Peng et al., JGR, 2007 ).