Insight into the 2004 Sumatra–Andaman earthquake from GPS measurements in southeast Asia
Data collected at ,60 Global Positioning System (GPS) sites in southeast Asia show the crustal deformation caused by the 26 December 2004 Sumatra–Andaman earthquake at an unprecedented large scale. Small but significant co-seismic jumps are clearly detected more than 3,000 km from the earthquake e...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Publishing Group
2005
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| Online Access: | http://eprints.utm.my/1273/1/nature03937.pdf |
| _version_ | 1825909040451944448 |
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| author | Vigny, C Simons, W J F Abu, S Bamphenyu, Ronnachai Satirapod, Chalemchorn Choosakul, Nithiwatthn Subarya, C Socquet, A Omar, Kamaludin Abidin, H Z Ambrosius, B. A. C. |
| author_facet | Vigny, C Simons, W J F Abu, S Bamphenyu, Ronnachai Satirapod, Chalemchorn Choosakul, Nithiwatthn Subarya, C Socquet, A Omar, Kamaludin Abidin, H Z Ambrosius, B. A. C. |
| author_sort | Vigny, C |
| collection | ePrints |
| description | Data collected at ,60 Global Positioning System (GPS) sites in southeast Asia show the crustal deformation caused by the 26 December 2004 Sumatra–Andaman earthquake at an unprecedented large scale. Small but significant co-seismic jumps are clearly detected more than 3,000 km from the earthquake epicentre. The nearest sites, still more than 400 km away, show displacements of 10 cm or more. Here we show that the rupture plane for this earthquake must have been at least 1,000 km long and that non-homogeneous slip is required to fit the large displacement gradients revealed by the GPS measurements. Our kinematic analysis of the GPS recordings indicates that the centroid of released deformation islocated at least 200 km north of the seismological epicentre. It also provides evidence that the rupture propagated northward sufficiently fast for stations in northern Thailand to have reached their final positions less than 10 min after the earthquake, hence ruling out the hypothesis of a silent slow aseismic rupture. |
| first_indexed | 2024-03-05T17:56:13Z |
| format | Article |
| id | utm.eprints-1273 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T17:56:13Z |
| publishDate | 2005 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | utm.eprints-12732010-06-01T02:52:31Z http://eprints.utm.my/1273/ Insight into the 2004 Sumatra–Andaman earthquake from GPS measurements in southeast Asia Vigny, C Simons, W J F Abu, S Bamphenyu, Ronnachai Satirapod, Chalemchorn Choosakul, Nithiwatthn Subarya, C Socquet, A Omar, Kamaludin Abidin, H Z Ambrosius, B. A. C. TA Engineering (General). Civil engineering (General) Data collected at ,60 Global Positioning System (GPS) sites in southeast Asia show the crustal deformation caused by the 26 December 2004 Sumatra–Andaman earthquake at an unprecedented large scale. Small but significant co-seismic jumps are clearly detected more than 3,000 km from the earthquake epicentre. The nearest sites, still more than 400 km away, show displacements of 10 cm or more. Here we show that the rupture plane for this earthquake must have been at least 1,000 km long and that non-homogeneous slip is required to fit the large displacement gradients revealed by the GPS measurements. Our kinematic analysis of the GPS recordings indicates that the centroid of released deformation islocated at least 200 km north of the seismological epicentre. It also provides evidence that the rupture propagated northward sufficiently fast for stations in northern Thailand to have reached their final positions less than 10 min after the earthquake, hence ruling out the hypothesis of a silent slow aseismic rupture. Nature Publishing Group 2005-07-14 Article PeerReviewed application/pdf en http://eprints.utm.my/1273/1/nature03937.pdf Vigny, C and Simons, W J F and Abu, S and Bamphenyu, Ronnachai and Satirapod, Chalemchorn and Choosakul, Nithiwatthn and Subarya, C and Socquet, A and Omar, Kamaludin and Abidin, H Z and Ambrosius, B. A. C. (2005) Insight into the 2004 Sumatra–Andaman earthquake from GPS measurements in southeast Asia. The Nature, 436 (7048). pp. 201-206. ISSN 0028-0836 http://www.nature.com/nature |
| spellingShingle | TA Engineering (General). Civil engineering (General) Vigny, C Simons, W J F Abu, S Bamphenyu, Ronnachai Satirapod, Chalemchorn Choosakul, Nithiwatthn Subarya, C Socquet, A Omar, Kamaludin Abidin, H Z Ambrosius, B. A. C. Insight into the 2004 Sumatra–Andaman earthquake from GPS measurements in southeast Asia |
| title | Insight into the 2004 Sumatra–Andaman
earthquake from GPS measurements in
southeast Asia |
| title_full | Insight into the 2004 Sumatra–Andaman
earthquake from GPS measurements in
southeast Asia |
| title_fullStr | Insight into the 2004 Sumatra–Andaman
earthquake from GPS measurements in
southeast Asia |
| title_full_unstemmed | Insight into the 2004 Sumatra–Andaman
earthquake from GPS measurements in
southeast Asia |
| title_short | Insight into the 2004 Sumatra–Andaman
earthquake from GPS measurements in
southeast Asia |
| title_sort | insight into the 2004 sumatraa€ andaman earthquake from gps measurements in southeast asia |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://eprints.utm.my/1273/1/nature03937.pdf |
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