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Source characteristics of shallow intraslab earthquakes derived from strong-motion simulations
© The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences. 2003
- Received: 4 February 2003
- Accepted: 31 March 2003
- Published: 20 June 2014
Source modeling of recent shallow intraslab earthquakes is studied using strong-motion data. The total area of strong-motion generation areas obtained is smaller than the prediction from the empirical relationship for inland crustal earthquakes by Somerville and co-workers. Moreover, the ratio between the combined area of strong-motion generation areas obtained in this study and the area predicted by the empirical relationship, tends to decrease with focal depth. The stress drops on strong motion generation areas (or asperities) of shallow intraslab earthquakes increase with focal depth.
- Shallow intraslab earthquake
- strong-motion generation
- empirical Green’s function method
- stress drop