DI51B-2621
Constraint of magnetic models using seismic tomography in Taiwan
Friday, 18 December 2015
Poster Hall (Moscone South)
Chieh-Hung Chen1, Chun-rong Chen2, Cheng-Horng Lin3, Strong Wen4 and Yi-Hsuan Huang1, (1)CCU National Chung Cheng University, Chiayi County, Taiwan, (2)Institue of Geophysics, Jhongli City, Taiwan, (3)Institute of Earth Sciences Academia Sinica, Taipei, Taiwan, (4)NCREE National Center for Research on Earthquake Engineering of Taiwan, Taipei, Taiwan
Abstract:
Uncertainty is often one of the sufferings when underlying models are constructed by using unitary geophysical data retrieved from field prospections. Velocity-susceptibility models are structured by using velocity obtained from arrival time of seismic waves transferring into susceptibility through characteristics of minerals and/or rocks to integrate two parameters together. Two profiles with intense undulation of geomagnetic anomalies over sediment areas in central-west Taiwan and complex geological structures at the rim of subduction zone in northeast Taiwan are used to examine discrepancy in values derived from prospections and the integrated models via a 2D forward method. Agreements between prospections and models suggest that rocks with high susceptibility can be identified in sediment areas and complex geological areas. Models with two-parameter adaptions shed light on constructing potential and susceptibility models in a more convincing way for further processes of inversion.
