Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS Measurements
We use the movement velocities of GPS stations in western Sichuan province, China, to determine the distribution of horizontal strain accumulation before the 2008 Wenchuan Ms8.0 earthquake with a piecewise approximation approach and the coseismic displacements to determine the fault slips of the ear...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2011-01-01
|
| Series: | International Journal of Geophysics |
| Online Access: | http://dx.doi.org/10.1155/2011/802346 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832552072804827136 |
|---|---|
| author | Jicang Wu Renzhao Liu Yongqi Chen Conrad Tang Guojie Meng Yaming Dang |
| author_facet | Jicang Wu Renzhao Liu Yongqi Chen Conrad Tang Guojie Meng Yaming Dang |
| author_sort | Jicang Wu |
| collection | DOAJ |
| description | We use the movement velocities of GPS stations in western Sichuan province, China, to determine the distribution of horizontal strain accumulation before the 2008 Wenchuan Ms8.0 earthquake with a piecewise approximation approach and the coseismic displacements to determine the fault slips of the earthquake with an inversion analysis method. The results show that the distribution of the principal strain rates is strongly related to the active faults in the region, but along Longmenshan fault where the earthquake occurred, the strain rates are much lower than the others. The fault slip distribution shows mainly a thrusting with dextral striking, and the fault slips in the upper parts of the fault plane are in general bigger. Using the current strain accumulation rate and the released energy by the earthquake, we predict such a big earthquake in Longmenshan fault zone will happen in 460 to 1380 years. |
| format | Article |
| id | doaj-art-3b3264c6e12d476e8c98a1f7d49ee003 |
| institution | Kabale University |
| issn | 1687-885X 1687-8868 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Geophysics |
| spelling | doaj-art-3b3264c6e12d476e8c98a1f7d49ee0032025-02-03T05:59:38ZengWileyInternational Journal of Geophysics1687-885X1687-88682011-01-01201110.1155/2011/802346802346Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS MeasurementsJicang Wu0Renzhao Liu1Yongqi Chen2Conrad Tang3Guojie Meng4Yaming Dang5Department of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, ChinaDepartment of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, ChinaDepartment of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Kowloon, Hong KongDepartment of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Kowloon, Hong KongInstitute of Earthquake Science, China Earthquake Administration, Beijing 100036, ChinaInstitute of Geodesy and Geophysics, Chinese Academy of Surveying and Mapping, Beijing 100830, ChinaWe use the movement velocities of GPS stations in western Sichuan province, China, to determine the distribution of horizontal strain accumulation before the 2008 Wenchuan Ms8.0 earthquake with a piecewise approximation approach and the coseismic displacements to determine the fault slips of the earthquake with an inversion analysis method. The results show that the distribution of the principal strain rates is strongly related to the active faults in the region, but along Longmenshan fault where the earthquake occurred, the strain rates are much lower than the others. The fault slip distribution shows mainly a thrusting with dextral striking, and the fault slips in the upper parts of the fault plane are in general bigger. Using the current strain accumulation rate and the released energy by the earthquake, we predict such a big earthquake in Longmenshan fault zone will happen in 460 to 1380 years.http://dx.doi.org/10.1155/2011/802346 |
| spellingShingle | Jicang Wu Renzhao Liu Yongqi Chen Conrad Tang Guojie Meng Yaming Dang Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS Measurements International Journal of Geophysics |
| title | Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS Measurements |
| title_full | Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS Measurements |
| title_fullStr | Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS Measurements |
| title_full_unstemmed | Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS Measurements |
| title_short | Analysis of the Crust Deformations before and after the 2008 Wenchuan Ms8.0 Earthquake Based on GPS Measurements |
| title_sort | analysis of the crust deformations before and after the 2008 wenchuan ms8 0 earthquake based on gps measurements |
| url | http://dx.doi.org/10.1155/2011/802346 |
| work_keys_str_mv | AT jicangwu analysisofthecrustdeformationsbeforeandafterthe2008wenchuanms80earthquakebasedongpsmeasurements AT renzhaoliu analysisofthecrustdeformationsbeforeandafterthe2008wenchuanms80earthquakebasedongpsmeasurements AT yongqichen analysisofthecrustdeformationsbeforeandafterthe2008wenchuanms80earthquakebasedongpsmeasurements AT conradtang analysisofthecrustdeformationsbeforeandafterthe2008wenchuanms80earthquakebasedongpsmeasurements AT guojiemeng analysisofthecrustdeformationsbeforeandafterthe2008wenchuanms80earthquakebasedongpsmeasurements AT yamingdang analysisofthecrustdeformationsbeforeandafterthe2008wenchuanms80earthquakebasedongpsmeasurements |