Feng, W. and Li, Z. (2010) A novel hybrid PSO/simplex algorithm for determining earthquake source parameters using InSAR observations. Di qiu wu li xue jin zhan = Progress in Geophysics, 25(4), pp. 1189-1196. (doi: 10.3969/j.issn.1004-2903.2010.04.007)
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Publisher's URL: http://www.progeophys.cn/CN/abstract/abstract3256.shtml
Abstract
The paper presents a Paticles Swarm Optimization (PSO) and Simplex integrated approach to determine source parameters using InSAR data. In earthquake source parameter inversion, thereare differences in the sensitivity of different parameters to the objective function and a trade-off between the fault area and slip. We proposed that: (1) a local PSO algorithm is employed to perform a global search,(2) a 1-D Probability Desity Function (PDF) is utilized to describe the local minimum in the full parameters space, which is automatically recognized as the initial model in the Simplex algorithm inversion. The PSO/Simplex integrated approach has been successfully applied to three different earthquakes: the 2003 Bam (Iran) earthquake (strike-slip), the 1998 Zhangbei (China) earthquake (dip-slip), and a simulated event with a normal fault with right-lateral slips. All the case studies sugguest the robustness and reliability of the integrated approach.
| Item Type: | Articles |
|---|---|
| Keywords: | Particles Swarm Optimization (PSO);source parameters; InSAR; earthquake; geodetic inversion |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Li, Dr Zhenhong |
| Authors: | Feng, W., and Li, Z. |
| Subjects: | Q Science > QE Geology G Geography. Anthropology. Recreation > GB Physical geography T Technology > TA Engineering (General). Civil engineering (General) |
| College/School: | College of Science and Engineering > School of Geographical and Earth Sciences |
| Journal Name: | Di qiu wu li xue jin zhan = Progress in Geophysics |
| Journal Abbr.: | Progress in Geophysics |
| ISSN: | 1004-2903 |
| Published Online: | 01 January 2010 |
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