Source modeling of the 1999 Taiwan (chi-chi) earthquake derived from geomagnetic induction vectors
- 1. National Taiwan Normal University, Taipei, Taiwan (China). Dept. of Earth Sciences
- 2. Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan (China)
- 3. Georgia Institute of Technology, Atlanta, GA (United States). School of Earth and Atmospheric Sciences
Description
Complete text of publication follows. We modeled the source field of the 1999 Taiwan Chi-Chi earthquake (MW7.6) using the geomagnetic data at Lunping (LNP), Taiwan, Geomagnetic Observatory situated 100 km from the epicenter. This large inland thrust earthquake produced a surface break more than 80 km long along the Chelungpu fault. First, we developed a 3D model consistent with the surface rupture and the focal depth data. Next, we applied the finite difference method for the 3-D case to construct the theoretic induction arrows. The forward results were compared to the observed one at LNP station. The optimum model was set finally when the variance between the theoretic and observed data is small enough. We find that the source dimension is about 30 x 30 x 80 km3.
Additional details
Identifiers
Publishing Information
- Publisher
- Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences
- Imprint Place
- Sopron (Hungary)
- Imprint Title
- International Association of Geomagnetism and Aeronomy IAGA 11. Scientific Assembly
- Imprint Pagination
- [1212 p.]
- Journal Page Range
- [1 p.]
- Report number
- INIS-HU--010
Conference
- Title
- International Association of Geomagnetism and Aeronomy IAGA 11. Scientific Assembly
- Dates
- 23-30 Aug 2009
- Place
- Sopron (Hungary)
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 41072935
- Subject category
- S58: GEOSCIENCES;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- EARTHQUAKES; EPICENTERS; INDUCTION; TAIWAN
- Descriptors DEC
- ASIA; CHINA; ISLANDS; SEISMIC EVENTS