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4. Monitoring of Local Earthquakes in Haiti Using Low-Cost, Citizen-Hosted Seismometers and Regional Broadband Stations

Author

Paul, Sylvert, primary, Monfret, Tony, additional, Courboulex, Françoise, additional, Chèze, Jérôme, additional, Calais, Eric, additional, Julien Symithe, Steeve, additional, Deschamps, Anne, additional, Peix, Fabrice, additional, Ambrois, David, additional, Martin, Xavier, additional, St Fleur, Sadrac, additional, and Boisson, Dominique, additional

Published
2023
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6. Analysis of Seismic, Hydroacoustic and Acoustic Waves Recorded on the Shoreline in the Vicinity of Shallow Underwater Explosions

Author

Beucler, Éric, Bonnin, Mickael, Diego Mercerat, E., Favretto-Cristini, Nathalie, Deschamps, Anne, Ambrois, David, Garlan, Thierry, Laboratoire de Planétologie et Géosciences [UMR_C 6112] (LPG), Université d'Angers (UA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Nantes université - UFR des Sciences et des Techniques (Nantes univ - UFR ST), Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet MOUVGS (Cerema Equipe-projet MOUVGS), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Centre d'études et d'expertise sur les risques, l'environnement, la mobilité et l'aménagement - Equipe-projet Repsody (Equipe-projet Repsody), Géoazur (GEOAZUR 7329), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Laboratoire de Mécanique et d'Acoustique [Marseille] (LMA ), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), Service Hydrographique et Océanographique de la Marine (SHOM), Ministère de la Défense, ANR-15-ASTR-0001,POSA,Caractérisation de la Propagation des Ondes Sismiques d'origine Anthropique(2015), Deschamps, Anne, and Caractérisation de la Propagation des Ondes Sismiques d'origine Anthropique - - POSA2015 - ANR-15-ASTR-0001 - ASTRID - VALID

Subjects
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], [SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], underwater explosions, seismic records
Abstract

International audience; The French Navy Mine Warfare Office conducted a series of 8 calibrated underwater explosions in December 2018 in the Bay of Hyères, SE France. The charges were ranging from 80 to 680 kg TNT-equivalent weights and the generated mechanical waves have been recorded at 17 seismic stations (composed of velocimeters, accelerometers and/or Microelectomechanical system accelerometers) temporarily deployed within 10 km of the sources. The large sampling rate recordings (> 250 Hz) allow to clearly identify both seismic, hydroacoustic and acoustic waves on the shoreline. The hydroacoustic phases, mostly observed at the rocky sites, rapidly attenuate when propagating on land and seem to be conditioned by the bathymetry and the seabed sedimentary cover. The hydroacoustic onset times can be used very efficiently to infer explosion locations and origin times. The spectrum analyses and site response along the shore and inside a building (church) provide insights on the mitigation of the possible nuisance caused by the disposal of unexploded historical ordnance.

Published
2022

7. Rupture Segmentation of the 14 August 2021 Mw 7.2 Nippes, Haiti, Earthquake Using Aftershock Relocation from a Local Seismic Deployment

Author

Agencia Estatal de Investigación (España), Douilly, Roby, Paul, Sylvert, Monfret, Tony, Deschamps, Anne, Ambrois, David, Symithe, Steeve J., St Fleur, Sadrac, Courboulex, Françoise, Calais, Eric, Boisson, Dominique, Lépinay, Bernard Mercier de, Font, Yvonne, Chèze, Jérôme, Agencia Estatal de Investigación (España), Douilly, Roby, Paul, Sylvert, Monfret, Tony, Deschamps, Anne, Ambrois, David, Symithe, Steeve J., St Fleur, Sadrac, Courboulex, Françoise, Calais, Eric, Boisson, Dominique, Lépinay, Bernard Mercier de, Font, Yvonne, and Chèze, Jérôme

Abstract

The 14 August 2021 Mw 7.2 Haiti earthquake struck 11 yr after the devastating 2010 event within the Enriquillo Plantain Garden (EPG) fault zone in the Southern peninsula of Haiti. Space geodetic results show that the rupture is composed of both left‐lateral strike‐slip and thrust motion, similar to the 2010 rupture; but aftershock locations from a local short‐period network are too diffuse to precisely delineate the segments that participated in this rupture. A few days after the mainshocks, we installed 12 broadband stations in the epicentral area. Here, we use data from those stations in combination with four local Raspberry Shakes stations that were already in place as part of a citizen seismology experiment to precisely relocate 2528 aftershocks from August to December 2021, and derive 1D P‐ and S‐crustal velocity models for this region. We show that the aftershocks delineate three north‐dipping structures with different strikes, located to the north of the EPG fault. In addition, two smaller aftershock clusters occurred on the EPG fault near the hypocenter area, indicative of triggered seismicity. Focal mechanisms are in agreement with coseismic slip inversion from Interferometric Synthetic Aperture Radar data with nodal planes that are consistent with the transpressional structures illustrated by the aftershock zones

Published
2023

8. Monitoring of Local Earthquakes in Haiti Using Low‐Cost, Citizen‐Hosted Seismometers and Regional Broadband Stations

Author

Agencia Estatal de Investigación (España), Paul, Sylvert, Monfret, Tony, Courboulex, Françoise, Chèze, Jérôme, Calais, Eric, Symithe, Steeve J., Deschamps, Anne, Peix, Fabrice, Ambrois, David, Martin, Xavier, St Fleur, Sadrac, Boisson, Dominique, Agencia Estatal de Investigación (España), Paul, Sylvert, Monfret, Tony, Courboulex, Françoise, Chèze, Jérôme, Calais, Eric, Symithe, Steeve J., Deschamps, Anne, Peix, Fabrice, Ambrois, David, Martin, Xavier, St Fleur, Sadrac, and Boisson, Dominique

Abstract

Seismic monitoring in Haiti is currently provided by a mixed network of low‐cost Raspberry Shake (RS) seismic stations hosted by citizens, and short‐period and broadband stations located mainly in neighboring countries. The level of earthquake detection is constantly improving for a better spatio‐temporal distribution of seismicity as the number of RS increases. In this article, we analyze the impact of the quality of the signals recorded by the RS—low‐cost seismometers with the smallest magnitude that the network can detect by studying the ambient noise level at these stations. Because the RS stations are installed as part of a citizen‐science project, their ambient noise estimated by the power spectral density (PSD) method often shows a high‐noise level at frequencies above 1 Hz. In the near field (<50 km), we show that the network detects seismic events of local magnitude on the order of 2.2 with signal‐to‐noise ratios (SNRs) greater than 4. Improving the network detection threshold requires densifying the network with more RS stations in locations that are less noisy, if possible. In spite of these limitations, this mixed network has provided near‐field data essential to rapidly understand the mechanism of the mainshock of the 14 August 2021 Mw 7.2 earthquake, to monitor its sequence of aftershocks in near‐real time, and to monitor background seismicity in Haiti on a routine basis

Published
2023

9. Short-Range Recordings of Shallow Underwater Explosions with Short-Period and Broadband Seismometers in the Bay of Hyères, France.

Author

Bonnin, Mickaël, Mercerat, E. Diego, Beucler, Éric, Favretto-Cristini, Nathalie, Deschamps, Anne, Ambrois, David, and Garlan, Thierry

Abstract

This study presents the analysis of the seismic records of eight underwater explosions triggered by the French Navy Mine Warfare Office in December 2018 in the Bay of Hyères, southeast France. The explosions (charges of 80-680 kg TNT-equivalent) were recorded by 17 temporary stations composed of medium-to-broadband velocimeters and accelerometers and of microelectromechanical systems accelerometers with sampling rates of 250 or 500 samples per second, installed at less than 10 km from the sources. The relatively high sampling rates used in this study allow us to observe, at the same time, seismic, hydroacoustic, and acoustic signals at the shore. This experiment offers a unique opportunity to investigate the impact at the shore, and in the water, of relatively large-charge weight detonations as well as of the amplification effects of the sedimentary cover. We notably see that the hydroacoustic signal is, at the rocky sites, the most energetic wavepacket recorded, and that its observation seems to be conditioned by the bathymetry and the seabed sedimentary cover. We also show that the hydroacoustic phase can be advantageously used to precisely estimate the location and origin time of the explosions. Finally, analyses of the spectrum and site response along the shore and at a bell tower on the Porquerolles Island provide interesting insights on the mitigation of the possible nuisance caused at the shore by the disposal of unexploded historical ordnance. [ABSTRACT FROM AUTHOR]

Published
2023
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11. Seismo-acoustic wave propagation generated by the detonation of UXOs of large charge weights in a shallow water environment

Author

Favretto-Cristini, Nathalie, Deschamps, Anne, Ambrois, David, Bonnin, Mickaël, Beucler, Éric, Diego Mercerat, E., Wang, Fang, Garlan, Thierry, Demoulin, Xavier, Arrigoni, M., Cristini, Paul, Morio, Olivier, Laboratoire de Mécanique et d'Acoustique [Marseille] (LMA ), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), Géoazur (GEOAZUR 7329), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Laboratoire de Planétologie et Géosciences [UMR_C 6112] (LPG), Université d'Angers (UA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Nantes université - UFR des Sciences et des Techniques (Nantes univ - UFR ST), Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), Observatoire des Sciences de l'Univers Nantes Atlantique (OSUNA), Université d'Angers (UA)-Institut national des sciences de l'Univers (INSU - CNRS)-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université Gustave Eiffel-Nantes Université (Nantes Univ), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Service Hydrographique et Océanographique de la Marine (SHOM), Ministère de la Défense, Institut de Recherche Dupuy de Lôme (IRDL), and École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], Acoustic waves, Seismic waves, Detonation, Underwater explosions, Military operations, Acoustic wave propagation, Seismology
Abstract

International audience; Unexploded historical ordnance (UXO) from World War II, that is discovered almost every week close to the French coast, must be destroyed quickly after discovery to ensure the safety of divers and ships. The favored destruction method is countermining, i.e., the use of a high-order detonation conducted by exploding an additional donor charge placed adjacent to the UXO. In the framework of a UXO countermining campaign conducted in the Rade d'Hyères (Mediterranean Sea, France) in December 2018, hydro-acoustic and seismic recording systems have been deployed to record the explosion-induced waves in water and the seismic signals on the shore, respectively (POSA project). In this expanded abstract, we present the main observations and focus on the impact of the shallow water environment (whose water depth is less than 50 m), and more specifically on the impact of the unconsolidated sedimentary layer, on the recorded signals induced by the detonation of charges with weights ranging from 80 to 680 kg TNT-equivalent. We also discuss the acoustic-to-seismic wave conversions.

Published
2022

12. Rupture Segmentation of the 14 August 2021 Mw 7.2 Nippes, Haiti, Earthquake Using Aftershock Relocation from a Local Seismic Deployment

Author

Douilly, Roby, primary, Paul, Sylvert, additional, Monfret, Tony, additional, Deschamps, Anne, additional, Ambrois, David, additional, Symithe, Steeve J., additional, St Fleur, Sadrac, additional, Courboulex, Françoise, additional, Calais, Eric, additional, Boisson, Dominique, additional, de Lépinay, Bernard Mercier, additional, Font, Yvonne, additional, and Chèze, Jérôme, additional

Published
2022
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13. An Atypical Shallow Mw 5.3, 2021 Earthquake in the Western Corinth Rift (Greece)

Author

Zahradník, Jiří, primary, Aissaoui, El Madani, additional, Bernard, Pascal, additional, Briole, Pierre, additional, Bufféral, Simon, additional, De Barros, Louis, additional, Deschamps, Anne, additional, Elias, Panagiotis, additional, Evangelidis, Christos P., additional, Fountoulakis, Ioannis, additional, Gallovič, František, additional, Kapetanidis, Vasilis, additional, Kaviris, George, additional, Ktenidou, Olga‐Joan, additional, Lambotte, Sophie, additional, Lengliné, Olivier, additional, Lyon‐Caen, Helene, additional, Noble, Mark, additional, Plicka, Vladimír, additional, Rigo, Alexis, additional, Roumelioti, Zafeiria, additional, Serpetsidaki, Anna, additional, Sokos, Efthimios, additional, and Voulgaris, Nicholas, additional

Published
2022
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14. Rupture Segmentation of the August 14, 2021 Mw7.2 Haiti Earthquake Using Aftershock Relocation from a Local Seismic Deployment

Author

Douilly, Roby, Paul, Sylvert, Monfret, Tony, Ambrois, David, Deschamps, Anne, Symithe, Steeve, St Fleur, Sadrac, Courboulex, Françoise, Calais, Eric, Boisson, Dominique, Mercier de Lépinay, Bernard, Font, Yvonne, Chèze, Jérôme, and Deschamps, Anne

Subjects
[SDU] Sciences of the Universe [physics]
Abstract

The 14 August 2021 Mw 7.2 Haiti earthquake struck a decade after the devastating 2010 event within the Enriquillo Plantain Garden Fault Zone in the Southern peninsula of Haiti. Space geodetic results show that the rupture is composed of both left-lateral strike-slip and thrust motion, similar to the 2010 rupture, but aftershock locations from a local short-period network are too diffuse to precisely delineate the segments that participated in this rupture. A few days after the mainshocks, 12 broadband stations were installed in the epicentral area. Here we use data from those stations in combination with 4 local Raspberry Shakes stations that were already in place as part of a citizen seismology experiment to precisely relocate 2528 aftershocks from August to December 2021 and also derive one-dimensional P and S crustal velocity models for this region. We show that the aftershocks delineate three north dipping structures with different strikes, located to the north of the Enriquillo fault. Additionally, two smaller aftershock clusters occurred on the Enriquillo fault near the hypocenter area, indicative of triggered seismicity. Focal mechanisms are in agreement with coseismic slip inversion from InSAR data with nodal planes that are consistent with the structures illustrated by the aftershock zones.

Published
2022

15. Prototype Pathogen Approach for Vaccine and Monoclonal Antibody Development: A Critical Component of the NIAID Plan for Pandemic Preparedness.

Author

Cassetti, M Cristina, Pierson, Theodore C, Patterson, L Jean, Bok, Karin, DeRocco, Amanda J, Deschamps, Anne M, Graham, Barney S, Erbelding, Emily J, and Fauci, Anthony S

Subjects
SARS virus, MONOCLONAL antibodies, EMERGING infectious diseases
Abstract

Severe acute respiratory syndrome coronavirus 1 (SARS-CoV-1) emerged 20 years ago, presaging a series of subsequent infectious disease epidemics of international concern. The recent emergence of SARS-CoV-2 has underscored the importance of targeted preparedness research to enable rapid countermeasure development during a crisis. In December 2021 the National Institute of Allergy and Infectious Diseases (NIAID), building upon the successful strategies developed during the SARS-CoV-2 response and to prepare for future pandemics, published a pandemic preparedness plan that outlined a research strategy focused on priority pathogens, technology platforms, and prototype pathogens. To accelerate the discovery, development, and evaluation of medical countermeasures against new or previously unknown pathogens of pandemic potential, we present here a strategy of research directed at select prototype pathogens. In this manner, leveraging a prototype pathogen approach may serve as a powerful cornerstone in biomedical research preparedness to protect public health from newly emerging and reemerging infectious diseases. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Citizen seismology helps decipher the 2021 Haiti earthquake

Author

Centre National de la Recherche Scientifique (France), Institut de Recherche pour le Développement (France), European Commission, Institut Universitaire de France, Université Côte d'Azur, Ambassade de France en Haïti, Agence Nationale de la Recherche (France), Agencia Estatal de Investigación (España), Calais, Eric, Symithe, Steeve J., Monfret, Tony, Delouis, B., Lomax, A., Courboulex, Françoise, Ampuero, Jean-Paul, Lara, P.E., Bletery, Q., Chèze, Jérôme, Peix, Fabrice, Deschamps, Anne, Lépinay, Bernard Mercier de, Raimbault, B., Jolivet, Romain, Paul, Sylvert, St Fleur, Sadrac, Boisson, Dominique, Fukushima, Y., Duputel, Z., Xu, L., Meng, L., Centre National de la Recherche Scientifique (France), Institut de Recherche pour le Développement (France), European Commission, Institut Universitaire de France, Université Côte d'Azur, Ambassade de France en Haïti, Agence Nationale de la Recherche (France), Agencia Estatal de Investigación (España), Calais, Eric, Symithe, Steeve J., Monfret, Tony, Delouis, B., Lomax, A., Courboulex, Françoise, Ampuero, Jean-Paul, Lara, P.E., Bletery, Q., Chèze, Jérôme, Peix, Fabrice, Deschamps, Anne, Lépinay, Bernard Mercier de, Raimbault, B., Jolivet, Romain, Paul, Sylvert, St Fleur, Sadrac, Boisson, Dominique, Fukushima, Y., Duputel, Z., Xu, L., and Meng, L.

Abstract

On 14 August 2021, the moment magnitude (Mw) 7.2 Nippes earthquake in Haiti occurred within the same fault zone as its devastating 2010 Mw 7.0 predecessor, but struck the country when field access was limited by insecurity and conventional seismometers from the national network were inoperative. A network of citizen seismometers installed in 2019 provided near-field data critical to rapidly understand the mechanism of the mainshock and monitor its aftershock sequence. Their real-time data defined two aftershock clusters that coincide with two areas of coseismic slip derived from inversions of conventional seismological and geodetic data. Machine learning applied to data from the citizen seismometer closest to the mainshock allows us to forecast aftershocks as accurately as with the network-derived catalog. This shows the utility of citizen science contributing to our understanding of a major earthquake

Published
2022

18. Rupture Segmentation of the 14 August 2021 Mw 7.2 Nippes, Haiti, Earthquake Using Aftershock Relocation from a Local Seismic Deployment.

Author

Douilly, Roby, Paul, Sylvert, Monfret, Tony, Deschamps, Anne, Ambrois, David, Symithe, Steeve J., St Fleur, Sadrac, Courboulex, Françoise, Calais, Eric, Boisson, Dominique, de Lépinay, Bernard Mercier, Font, Yvonne, and Chèze, Jérôme

Abstract

The 14 August 2021 MW 7.2 Haiti earthquake struck 11 yr after the devastating 2010 event within the Enriquillo Plantain Garden (EPG) fault zone in the Southern peninsula of Haiti. Space geodetic results show that the rupture is composed of both left-lateral strike-slip and thrust motion, similar to the 2010 rupture; but aftershock locations from a local short-period network are too diffuse to precisely delineate the segments that participated in this rupture. A few days after the mainshocks, we installed 12 broadband stations in the epicentral area. Here, we use data from those stations in combination with four local Raspberry Shakes stations that were already in place as part of a citizen seismology experiment to precisely relocate 2528 aftershocks from August to December 2021, and derive 1D P- and S-crustal velocity models for this region. We show that the aftershocks delineate three north-dipping structures with different strikes, located to the north of the EPG fault. In addition, two smaller aftershock clusters occurred on the EPG fault near the hypocenter area, indicative of triggered seismicity. Focal mechanisms are in agreement with coseismic slip inversion from Interferometric Synthetic Aperture Radar data with nodal planes that are consistent with the transpressional structures illustrated by the aftershock zones. [ABSTRACT FROM AUTHOR]

Published
2023
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19. Assessment of Risks Induced by Countermining Unexploded Large-Charge Historical Ordnance in a Shallow Water Environment—Part I: Real Case Study

Author

Favretto-Cristini, Nathalie, primary, Garlan, Thierry, additional, Morio, Olivier, additional, Demoulin, Xavier, additional, Arrigoni, Michel, additional, Deschamps, Anne, additional, Bonnin, Mickael, additional, Beucler, Eric, additional, Mercerat, E. Diego, additional, Ambrois, David, additional, Schwab, Romain, additional, Cristini, Paul, additional, and Wang, Fang, additional

Published
2022
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21. Building an efficient and inclusive communication strategy for risk reduction in Haiti through a citizen-seismology approach

Author

fallou, laure, primary, Corbet, Alice, additional, Calixte, Nixon, additional, Hurbon, Laennec, additional, Calais, Eric, additional, Theodat, Jean-Marie, additional, Courboulex, Françoise, additional, Bossu, Remy, additional, Guerrier, Kelly, additional, Etienne, Guy, additional, Monfret, Tony, additional, Ampuero, Jean-Paul, additional, Symithe, Steeve, additional, Cheze, Jerome, additional, Peix, Fabrice, additional, Paul, Sylvert, additional, and Deschamps, Anne, additional

Published
2022
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22. Le réseau de sismologie citoyenne en Haïti face au séisme de Nippes (Mw 7.2) du 14 Aout 2021

Author

Courboulex, Françoise, Monfret, Tony, Paul, Sylvert, Calais, Eric, Symithe, Steeve, Chèze, Jérôme, St Fleur, Sadrac, Deschamps, Anne, Delouis, Bertrand, Ampuero, Jean Paul, Peix, Fabrice, Balestra, Julien, Mercier de Lépinay, Bernard, Fallou, Laure, Bossu, Rémy, Corbet, Alice, Boisson, Dominique, Hurbon, Laënnec, Calixte, Nixon, Lomax, Anthony, Géoazur (GEOAZUR 7329), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Faculté des Sciences, Laboratoire URGéo, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL), Centre Sismologique Euro-Méditerranéen, Les Afriques dans le monde (LAM), Sciences Po Bordeaux - Institut d'études politiques de Bordeaux (IEP Bordeaux)-Institut de Recherche pour le Développement (IRD)-Institut d'Études Politiques [IEP] - Bordeaux-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS), Faculté des Sciences Humaines et Sociales, Alomax, Résif, École normale supérieure - Paris (ENS Paris), Sciences Po Bordeaux - Institut d'études politiques de Bordeaux (IEP Bordeaux)-Institut de Recherche pour le Développement (IRD)-Institut d'Études Politiques [IEP] - Bordeaux-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), and MALERBA, Solène

Subjects
Sismologie, Earthquake, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], RESIF, [SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], Seismology, Séisme
Abstract

International audience; Le 14 Aout 2021, un séisme de magnitude 7.2 frappe le sud d'Haiti, cause la mort de 2500 personnes et la destruction de 53000 maisons. Ce séisme et ses répliques sont bien enregistrés par le réseau sismo-citoyen installé depuis 2019 en Haiti. Les données nous permettent de caractériser le choc principal (PGA de 0.32 g mesuré à 21 km) et de suivre en temps réel l'évolution des répliques (http://ayiti.unice.fr/ayiti-seismes/). La faille a joué sur environ 50km de long avec un mouvement oblique majoritairement compressif à l'est et décrochant à l'ouest.Le réseau sismo-citoyen est actuellement constitué de 15 stations sismologiques à bas coût (Raspberry shake) installées chez des citoyens haïtiens volontaires (données ouvertes).Dans le projet OSMOSE (ANR 2022-2026, PI E. Calais), nous proposons d'étendre ce réseau, de diversifier les hébergeurs (particuliers, écoles, entreprises ...), et de mener un travail interdisciplinaire approfondi entre sociologues et sismologues Haïtiens et Français (Cadre LMI CARIBACT de l'IRD).

Published
2021

24. Rapid response to the M w4.9 earthquake of November 11, 2019 in Le Teil, Lower Rhône Valley, France

Author

Cornou, Cécile, primary, Ampuero, Jean-Paul, additional, Aubert, Coralie, additional, Audin, Laurence, additional, Baize, Stéphane, additional, Billant, Jérémy, additional, Brenguier, Florent, additional, Causse, Mathieu, additional, Chlieh, Mohamed, additional, Combey, Andy, additional, de Michele, Marcello, additional, Delouis, Bertrand, additional, Deschamps, Anne, additional, Ferry, Matthieu, additional, Foumelis, Michalis, additional, Froment, Bérénice, additional, Gélis, Céline, additional, Grandin, Raphaël, additional, Grasso, Jean-Robert, additional, Hannouz, Estelle, additional, Hok, Sébastien, additional, Jung, Axel, additional, Jolivet, Romain, additional, Langlais, Mickaël, additional, Langlaude, Philippe, additional, Larroque, Christophe, additional, Leloup, Philippe Hervé, additional, Manchuel, Kevin, additional, Marconato, Léo, additional, Maron, Christophe, additional, Mathot, Emmanuel, additional, Maufroy, Emeline, additional, Mercerat, Diego, additional, Metois, Marianne, additional, Nayman, Emmanuelle, additional, Pondaven, Ildut, additional, Provost, Ludmila, additional, Régnier, Julie, additional, Ritz, Jean-François, additional, Rivet, Diane, additional, Schlupp, Antoine, additional, Sladen, Anthony, additional, Voisin, Christophe, additional, Walpersdorf, Andrea, additional, Wolynieck, David, additional, Allemand, Pascal, additional, Beck, Elise, additional, Bertrand, Etienne, additional, Bertrand, Véronique, additional, Briole, Pierre, additional, Brunel, Didier, additional, Cavalié, Olivier, additional, Chèze, Jérôme, additional, Courboulex, Françoise, additional, Douste-Bacque, Isabelle, additional, Dretzen, Rémi, additional, Giampietro, Tiziano, additional, Godano, Maxime, additional, Grandjean, Philippe, additional, Grunberg, Marc, additional, Guerin, Gauthier, additional, Guillot, Stéphane, additional, Haber, Elias El, additional, Hernandez, Alain, additional, Jomard, Hervé, additional, Lasserre, Cécile, additional, Liang, Chao, additional, Lior, Itzhak, additional, Martin, Xavier, additional, Mata, Daniel, additional, Menager, Marine, additional, Mercier, Antoine, additional, Mordret, Aurélien, additional, Oral, Elif, additional, Paul, Anne, additional, Peix, Fabrice, additional, Pequegnat, Catherine, additional, Pernoud, Michel, additional, Satriano, Claudio, additional, Sassi, Rihab, additional, Schaming, Marc, additional, Sellier, Valérie, additional, Sira, Christophe, additional, Socquet, Anne, additional, Sue, Christian, additional, Trilla, Aurélie, additional, Vallée, Martin, additional, van den Ende, Martijn, additional, Vernant, Philippe, additional, Vial, Benjamin, additional, and Weng, Huihui, additional

Published
2022
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25. Seismotectonics of southeast France: from the Jura mountains to Corsica

Author

Larroque, Christophe, primary, Baize, Stéphane, additional, Albaric, Julie, additional, Jomard, Hervé, additional, Trévisan, Jenny, additional, Godano, Maxime, additional, Cushing, Marc, additional, Deschamps, Anne, additional, Sue, Christian, additional, Delouis, Bertrand, additional, Potin, Bertrand, additional, Courboulex, Françoise, additional, Régnier, Marc, additional, Rivet, Diane, additional, Brunel, Didier, additional, Chèze, Jérôme, additional, Martin, Xavier, additional, Maron, Christophe, additional, and Peix, Fabrice, additional

Published
2022
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