A5017022207- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Geological and Geophysical Studies
- earthquake and tectonic studies
- Island Studies and Pacific Affairs
- High-pressure geophysics and materials
- Pacific and Southeast Asian Studies
- Seismic Waves and Analysis
- African Botany and Ecology Studies
- Migration, Identity, and Health
Institut Terre & Environnement de Strasbourg
2023
Bureau de Recherches Géologiques et Minières
2020-2023
Centre National de la Recherche Scientifique
2021-2023
Université de Strasbourg
2021-2023
SUMMARY The brutal onset of seismicity offshore Mayotte island North the Mozambique Channel, Indian Ocean, that occurred in May 2018 caught population, authorities and scientific community off guard. Around 20 potentially felt earthquakes were recorded first 5 d, up to magnitude Mw 5.9. had little pre-existing knowledge seismic activity region due poor network coverage. During 2019, MAYOBS/REVOSIMA seismology group was progressively built between four French research institutions improve...
The Mayotte seismic sequence that started on 10 May 2018, with a main shock of magnitude Mw 5.9 15, followed by major offshore volcanic activity, raises several questions seismo-volcanic hazards in the Comoros region. unexpected size and duration crisis is an opportunity to reassess distribution seismicity near Island, but also regionally. We present comprehensive catalogue region including Mozambique Channel, coast Madagascar, based partly previously published data unpublished from local...
Geophysical and geological data from the North Mozambique Channel acquired during 2020–2021 SISMAORE oceanographic cruise reveal a corridor of recent volcanic tectonic features 200 km wide 600 long within north Comoros Archipelago. Here we identify describe two major submarine tectono-volcanic fields: N’Droundé province oriented N160°E Grande-Comore Island, Mwezi N130°E Anjouan Mayotte Islands. The presence popping basaltic rocks sampled in suggests post-Pleistocene activity. geometry...
From 10 May 2018 to 1 November 2022 (time of writing), an unprecedented seismic activity is observed east Mayotte Island (France), related the largest submarine eruption ever recorded with offshore geophysical studies. Using signals from regional and local stations, we build a comprehensive catalog seismicity for first ten months sequence. This includes total 2874 events magnitude (Mlv) ranging 2.4 6.0, 77% them relocated using double difference location procedure. The hypocentral locations...
Geophysical and geological data acquired during the 2020–2021 SISMAORE oceanographic cruise reveal a corridor of recent volcanic tectonic features 200 km wide 600 long within north Comoros Archipelago in North Mozambique Channel. More than 2200 submarine edifices, comparable to Fani Maoré volcano, have been identified. Most them are distributed according two large tectonic-volcanic fields: N’Drounde province oriented N160°E Grande-Comore Island, Mwezi...
Since 10 May 2018, an unprecedented seismic activity is observed east of Mayotte Island (France), related to the largest submarine eruption ever recorded with offshore geophysical studies. Using signals from regional and local stations, we build a comprehensive catalog seismicity for first ten months sequence. This includes total 2874 events magnitude (Mlv) ranging 2.4 6.0, 77% them relocated using double difference location procedure. The hypocentral locations over period 2018 –...