Quasi-periodic slow slip events in the afterslip area of the 1996 Hyuga-nada earthquakes, Japan

摘要: [1] The time evolution of afterslip on a plate boundary experiencing interplate earthquakes is expected to show logarithmic decay. The global positioning system network in Japan has been monitoring transient deformation since the occurrence two large with moment magnitudes 6.8 and 6.7 Hyuga-nada area, southwest Japan, 1996. spatial temporal aseismic slip based crustal data indicates that followed gradually declined background rates by around 2004 total magnitude 7.3. However, quasi-periodic slow events suddenly began within area 2005 approximately one year duration two-year recurrence interval. three January range from 6.8. This differs greatly behavior decay over time. Both velocity-strengthening velocity-weakening rate-and-state modes have implicated as cause afterslip, whose location complementary main shock velocity-weakening, while event occurs different frictional properties those an area. In light seemingly properties, coexistence same would provide additional information about precisely how interface behaving. these should give clues understanding long-term increasing risk neighboring areas.