Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometry
<p>On May 20 and 29, 2012, two earthquakes of magnitudes 5.9 and 5.8 (Mw), respectively, and their aftershock sequences hit the central Po Plain (Italy), about 40 km north of Bologna. More than 2,000 sizable aftershocks were recorded by the Isti-tuto Nazionale di Geofisica e Vulcanologia (INGV...
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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doaj-860d2d41a4434191913ab32351132d052020-11-24T22:39:48ZengIstituto Nazionale di Geofisica e Vulcanologia (INGV)Annals of Geophysics1593-52132037-416X2012-10-0155410.4401/ag-61575796Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometryChristian Bignami0Pierfrancesco Burrato1Valentina Cannelli2Marco Chini3Emanuela Falcucci4Alessandro Ferretti5Stefano Gori6Christodoulos Kyriakopoulos7Daniele Melini8Marco Moro9Fabrizio Novali10Michele Saroli11Salvatore Stramondo12Gianluca Valensise13Paola Vannoli14Istituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti,Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma 1, RomaIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma 1, RomaIstituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti,Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma 1, RomaTele-Rilevamento Europa (TRE) s.r.l., MilanoIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma 1, RomaIstituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti,Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma 1, RomaIstituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti,Tele-Rilevamento Europa (TRE) s.r.l., MilanoIstituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti; Università di Cassino e del Lazio Meridionale, Dipartimento di Ingegneria Civile e Meccanica (DICeM), Cassino (Frosinone)Istituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti,Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma 1, RomaIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma 1, Roma<p>On May 20 and 29, 2012, two earthquakes of magnitudes 5.9 and 5.8 (Mw), respectively, and their aftershock sequences hit the central Po Plain (Italy), about 40 km north of Bologna. More than 2,000 sizable aftershocks were recorded by the Isti-tuto Nazionale di Geofisica e Vulcanologia (INGV; National Institute of Geophysics and Volcanology) National Seismic Network (http://iside.rm.ingv.it/). The sequence was generated by pure compressional faulting over blind thrusts of the western Ferrara Arc, and it involved a 50-km-long stretch of this buried outer front of the northern Apennines. The focal mechanisms of the larger shocks agree with available structural data and with present-day tectonic stress indicators, which show locally a maximum horizontal stress oriented ca. N-S; i.e. oriented perpendicular to the main structural trends. Most of the sequence occurred between 1 km and 12 km in depth, above the local basal detachment of the outer thrust fronts of the northern Apennines. We measured the surface displacement patterns associated with the mainshocks and some of the larger aftershocks (some of which had Mw >5.0) by applying the Interferometric Synthetic Aperture Radar (InSAR) technique to a pair of C-Band Radarsat-1 images. We then used the coseismic motions detected over the epicentral region as input information, to obtain the best-fit model fault for the two largest shocks. […]</p>http://www.annalsofgeophysics.eu/index.php/annals/article/view/61572012 Emilia earthquakeSAR InterferometrySeismogenic sourcesFault modeling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Christian Bignami Pierfrancesco Burrato Valentina Cannelli Marco Chini Emanuela Falcucci Alessandro Ferretti Stefano Gori Christodoulos Kyriakopoulos Daniele Melini Marco Moro Fabrizio Novali Michele Saroli Salvatore Stramondo Gianluca Valensise Paola Vannoli |
spellingShingle |
Christian Bignami Pierfrancesco Burrato Valentina Cannelli Marco Chini Emanuela Falcucci Alessandro Ferretti Stefano Gori Christodoulos Kyriakopoulos Daniele Melini Marco Moro Fabrizio Novali Michele Saroli Salvatore Stramondo Gianluca Valensise Paola Vannoli Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometry Annals of Geophysics 2012 Emilia earthquake SAR Interferometry Seismogenic sources Fault modeling |
author_facet |
Christian Bignami Pierfrancesco Burrato Valentina Cannelli Marco Chini Emanuela Falcucci Alessandro Ferretti Stefano Gori Christodoulos Kyriakopoulos Daniele Melini Marco Moro Fabrizio Novali Michele Saroli Salvatore Stramondo Gianluca Valensise Paola Vannoli |
author_sort |
Christian Bignami |
title |
Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometry |
title_short |
Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometry |
title_full |
Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometry |
title_fullStr |
Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometry |
title_full_unstemmed |
Coseismic deformation pattern of the Emilia 2012 seismic sequence imaged by Radarsat-1 interferometry |
title_sort |
coseismic deformation pattern of the emilia 2012 seismic sequence imaged by radarsat-1 interferometry |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
series |
Annals of Geophysics |
issn |
1593-5213 2037-416X |
publishDate |
2012-10-01 |
description |
<p>On May 20 and 29, 2012, two earthquakes of magnitudes 5.9 and 5.8 (Mw), respectively, and their aftershock sequences hit the central Po Plain (Italy), about 40 km north of Bologna. More than 2,000 sizable aftershocks were recorded by the Isti-tuto Nazionale di Geofisica e Vulcanologia (INGV; National Institute of Geophysics and Volcanology) National Seismic Network (http://iside.rm.ingv.it/). The sequence was generated by pure compressional faulting over blind thrusts of the western Ferrara Arc, and it involved a 50-km-long stretch of this buried outer front of the northern Apennines. The focal mechanisms of the larger shocks agree with available structural data and with present-day tectonic stress indicators, which show locally a maximum horizontal stress oriented ca. N-S; i.e. oriented perpendicular to the main structural trends. Most of the sequence occurred between 1 km and 12 km in depth, above the local basal detachment of the outer thrust fronts of the northern Apennines. We measured the surface displacement patterns associated with the mainshocks and some of the larger aftershocks (some of which had Mw >5.0) by applying the Interferometric Synthetic Aperture Radar (InSAR) technique to a pair of C-Band Radarsat-1 images. We then used the coseismic motions detected over the epicentral region as input information, to obtain the best-fit model fault for the two largest shocks. […]</p> |
topic |
2012 Emilia earthquake SAR Interferometry Seismogenic sources Fault modeling |
url |
http://www.annalsofgeophysics.eu/index.php/annals/article/view/6157 |
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