New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling
International audience In the last years, large effort has been done to carry out multi-channel seismic reflection surveys (MCS) in SW Iberia to locate the active tectonic structures that could be related to the generation of the 1755 Lisbon earthquake and the tsunami. The outcome of these researche...
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ftinsu:oai:HAL:hal-00299044v1 2023-11-12T04:22:02+01:00 New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling Baptista, M. A. Miranda, J. M. Chierici, F. Zitellini, N. Instituto Superior de Engenharia de Lisboa (ISEL) Centro de Geofisica da Universidade de Lisboa Universidade de Lisboa = University of Lisbon (ULISBOA) Instituto di Geologia Marina Istituto di Radioastronomia 2003 https://hal.science/hal-00299044 https://hal.science/hal-00299044/document https://hal.science/hal-00299044/file/nhess-3-333-2003.pdf en eng HAL CCSD Copernicus Publ. / European Geosciences Union hal-00299044 https://hal.science/hal-00299044 https://hal.science/hal-00299044/document https://hal.science/hal-00299044/file/nhess-3-333-2003.pdf info:eu-repo/semantics/OpenAccess ISSN: 1561-8633 EISSN: 1684-9981 Natural Hazards and Earth System Sciences https://hal.science/hal-00299044 Natural Hazards and Earth System Sciences, 2003, 3 (5), pp.333-340 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2003 ftinsu 2023-10-25T16:27:33Z International audience In the last years, large effort has been done to carry out multi-channel seismic reflection surveys (MCS) in SW Iberia to locate the active tectonic structures that could be related to the generation of the 1755 Lisbon earthquake and the tsunami. The outcome of these researches led to the identification of a large, compressive tectonic structure, named Marques de Pombal thrust that, alone can account for only half the seismic energy released by the 1755 event. However, these investigations have shown the presence of additional tectonic structures active along the continental margin of SW Iberia that are here evaluated to model the tsunami waves observed along the coasts of Iberia, Morocco and Central Atlantic. In this paper we present a new reappraisal of the 1755 source, proposing a possible composite source, including the Marques de Pombal thrust fault and the Guadalquivir Bank. The test of the source is achieved through numerical modelling of the tsunami all over the North Atlantic area. The results presented now incorporate data from the geophysical cruises and the historical observation along the European coasts and also from the Western Indies. The results of this study will, hopefully, improve the seismic risk assessment and evaluation in the Portuguese territory, Spain, Morocco and Central/North Atlantic. Article in Journal/Newspaper North Atlantic Institut national des sciences de l'Univers: HAL-INSU |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Baptista, M. A. Miranda, J. M. Chierici, F. Zitellini, N. New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience In the last years, large effort has been done to carry out multi-channel seismic reflection surveys (MCS) in SW Iberia to locate the active tectonic structures that could be related to the generation of the 1755 Lisbon earthquake and the tsunami. The outcome of these researches led to the identification of a large, compressive tectonic structure, named Marques de Pombal thrust that, alone can account for only half the seismic energy released by the 1755 event. However, these investigations have shown the presence of additional tectonic structures active along the continental margin of SW Iberia that are here evaluated to model the tsunami waves observed along the coasts of Iberia, Morocco and Central Atlantic. In this paper we present a new reappraisal of the 1755 source, proposing a possible composite source, including the Marques de Pombal thrust fault and the Guadalquivir Bank. The test of the source is achieved through numerical modelling of the tsunami all over the North Atlantic area. The results presented now incorporate data from the geophysical cruises and the historical observation along the European coasts and also from the Western Indies. The results of this study will, hopefully, improve the seismic risk assessment and evaluation in the Portuguese territory, Spain, Morocco and Central/North Atlantic. |
author2 |
Instituto Superior de Engenharia de Lisboa (ISEL) Centro de Geofisica da Universidade de Lisboa Universidade de Lisboa = University of Lisbon (ULISBOA) Instituto di Geologia Marina Istituto di Radioastronomia |
format |
Article in Journal/Newspaper |
author |
Baptista, M. A. Miranda, J. M. Chierici, F. Zitellini, N. |
author_facet |
Baptista, M. A. Miranda, J. M. Chierici, F. Zitellini, N. |
author_sort |
Baptista, M. A. |
title |
New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling |
title_short |
New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling |
title_full |
New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling |
title_fullStr |
New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling |
title_full_unstemmed |
New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling |
title_sort |
new study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling |
publisher |
HAL CCSD |
publishDate |
2003 |
url |
https://hal.science/hal-00299044 https://hal.science/hal-00299044/document https://hal.science/hal-00299044/file/nhess-3-333-2003.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1561-8633 EISSN: 1684-9981 Natural Hazards and Earth System Sciences https://hal.science/hal-00299044 Natural Hazards and Earth System Sciences, 2003, 3 (5), pp.333-340 |
op_relation |
hal-00299044 https://hal.science/hal-00299044 https://hal.science/hal-00299044/document https://hal.science/hal-00299044/file/nhess-3-333-2003.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782337212699901952 |