The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data.
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/6553 |
Resumo: | On May 21, 2003, occurred the Zemmouri-Boumerdes earth- quake (Mw=6.8, depth 7km) in a zone characterized by rela- tively moderate and diffuse seismicity. The main shock have been relocated at Zemmouri el Bahri (36.83N,3.65E) close to the continent and the aftershocks sequence (CRAAG mobile stations) gives a distribution in the NE-SW direction with most of the epicenters located on the continent or near the coast. Source mechanism of this event, including fault plane solutions, waveform inversion, spectral analysis, fault slip distribution and displacement field model, is analysed. The results show pure thrusting motion (plane striking 64o and dipping 50o to the SSE) with a STF formed by two main asperities at shallow depth (7 and 4km respectively) and Mo=1.3x1019Nm. Slip distribution show an E-W asymmetric bilateral rupture process. The rupture front through the region (Zemmouri-Boumerdes) of high slip (206 cm) and maximum moment released (50% of the total Mo), in direction of Algiers, produced a pulse of energy about 8s after the start of the earthquake. This strong subevent located at SW of the hypocenter started at 4.0km depth and probably broke the surface. The vertical displacements estimated from the fault slip distribution model, the main shock relocation and the aftershock distribution suggest a fault close to the coastline as origin of the Zemmouri-Boumerdes earthquake. |
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The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data.Earthquake SourceRupture ProcessOn May 21, 2003, occurred the Zemmouri-Boumerdes earth- quake (Mw=6.8, depth 7km) in a zone characterized by rela- tively moderate and diffuse seismicity. The main shock have been relocated at Zemmouri el Bahri (36.83N,3.65E) close to the continent and the aftershocks sequence (CRAAG mobile stations) gives a distribution in the NE-SW direction with most of the epicenters located on the continent or near the coast. Source mechanism of this event, including fault plane solutions, waveform inversion, spectral analysis, fault slip distribution and displacement field model, is analysed. The results show pure thrusting motion (plane striking 64o and dipping 50o to the SSE) with a STF formed by two main asperities at shallow depth (7 and 4km respectively) and Mo=1.3x1019Nm. Slip distribution show an E-W asymmetric bilateral rupture process. The rupture front through the region (Zemmouri-Boumerdes) of high slip (206 cm) and maximum moment released (50% of the total Mo), in direction of Algiers, produced a pulse of energy about 8s after the start of the earthquake. This strong subevent located at SW of the hypocenter started at 4.0km depth and probably broke the surface. The vertical displacements estimated from the fault slip distribution model, the main shock relocation and the aftershock distribution suggest a fault close to the coastline as origin of the Zemmouri-Boumerdes earthquake.XXIX General Assembly of the European Seismological Commission (ESC), 13-17 September, Potsdam, Germany.2012-12-06T17:24:01Z2012-12-062004-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/6553http://hdl.handle.net/10174/6553engBezzeghoud M., B. Caldeira, J.F. Borges, H. Beldjoudi, E. Buforn, S. Maouche, F. Ousadou, A. Kherroubi, A. Harbi and A. Ayadi, 2004. The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. XXIX General Assembly of the European Seismological Commission (ESC), 13-17 September, Potsdam, Germany.naonaonaomourad@uevora.ptbafcc@uevora.ptjborges@uevora.ptndndndndndnd249Bezzeghoud, MCaldeira, BBorges, JFBuforn, EMaouche, FOusadou, AKhrroubi, AHarbi, AAyadi, Ainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:45:58Zoai:dspace.uevora.pt:10174/6553Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:13.982501Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. |
title |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. |
spellingShingle |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. Bezzeghoud, M Earthquake Source Rupture Process |
title_short |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. |
title_full |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. |
title_fullStr |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. |
title_full_unstemmed |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. |
title_sort |
The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. |
author |
Bezzeghoud, M |
author_facet |
Bezzeghoud, M Caldeira, B Borges, JF Buforn, E Maouche, F Ousadou, A Khrroubi, A Harbi, A Ayadi, A |
author_role |
author |
author2 |
Caldeira, B Borges, JF Buforn, E Maouche, F Ousadou, A Khrroubi, A Harbi, A Ayadi, A |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Bezzeghoud, M Caldeira, B Borges, JF Buforn, E Maouche, F Ousadou, A Khrroubi, A Harbi, A Ayadi, A |
dc.subject.por.fl_str_mv |
Earthquake Source Rupture Process |
topic |
Earthquake Source Rupture Process |
description |
On May 21, 2003, occurred the Zemmouri-Boumerdes earth- quake (Mw=6.8, depth 7km) in a zone characterized by rela- tively moderate and diffuse seismicity. The main shock have been relocated at Zemmouri el Bahri (36.83N,3.65E) close to the continent and the aftershocks sequence (CRAAG mobile stations) gives a distribution in the NE-SW direction with most of the epicenters located on the continent or near the coast. Source mechanism of this event, including fault plane solutions, waveform inversion, spectral analysis, fault slip distribution and displacement field model, is analysed. The results show pure thrusting motion (plane striking 64o and dipping 50o to the SSE) with a STF formed by two main asperities at shallow depth (7 and 4km respectively) and Mo=1.3x1019Nm. Slip distribution show an E-W asymmetric bilateral rupture process. The rupture front through the region (Zemmouri-Boumerdes) of high slip (206 cm) and maximum moment released (50% of the total Mo), in direction of Algiers, produced a pulse of energy about 8s after the start of the earthquake. This strong subevent located at SW of the hypocenter started at 4.0km depth and probably broke the surface. The vertical displacements estimated from the fault slip distribution model, the main shock relocation and the aftershock distribution suggest a fault close to the coastline as origin of the Zemmouri-Boumerdes earthquake. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-01-01T00:00:00Z 2012-12-06T17:24:01Z 2012-12-06 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/6553 http://hdl.handle.net/10174/6553 |
url |
http://hdl.handle.net/10174/6553 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Bezzeghoud M., B. Caldeira, J.F. Borges, H. Beldjoudi, E. Buforn, S. Maouche, F. Ousadou, A. Kherroubi, A. Harbi and A. Ayadi, 2004. The Zemmouri-Boumerdes Earthquake of May 21st, 2003, Mw=6.8: Source Parameters and Rupture Propagation Study from Teleseismic Data. XXIX General Assembly of the European Seismological Commission (ESC), 13-17 September, Potsdam, Germany. nao nao nao mourad@uevora.pt bafcc@uevora.pt jborges@uevora.pt nd nd nd nd nd nd 249 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
XXIX General Assembly of the European Seismological Commission (ESC), 13-17 September, Potsdam, Germany. |
publisher.none.fl_str_mv |
XXIX General Assembly of the European Seismological Commission (ESC), 13-17 September, Potsdam, Germany. |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136495678783488 |