3 résultats
Marco Liuzzo; Andrea Di Muro; Andrea Luca Rizzo; Fausto Grassa; Massimo Coltorti; Magali Ader
Comptes Rendus. Géoscience, Volume 354 (2022) p. 275-298
Résumé : ... The archipelago results from intra-plate volcanism, the most recent eruptions having occurred on the youngest island of Grande Comore and on the oldest one of Mayotte. Since 2018, the eastern submarine flank of Mayotte has been the site of one of the largest recent eruptive events on Earth in terms of erupted lava volume. On land, the most recent volcanic activity occurred in Holocene on the eastern side of Mayotte, corresponding to the small Petite Terre Island, where two main and persistent gas seep areas are present (Airport Beach, namely BAS, and Dziani Dzaha intracrateric lake). ...
Pierre Cadeau; Didier Jézéquel; Alexis Groleau; Andrea Di Muro; Magali Ader
Comptes Rendus. Géoscience, Volume 354 (2022) p. 299-316
Résumé : ... Since May 2018, an unexpected long and intense seismic crisis started offshore Mayotte (Indian Ocean, France). This ongoing seismic sequence is associated with the birth of a newly discovered submarine volcano 50 km east of Petite Terre. Here, we investigate the indirect impact of this crisis on the stability of an atypical ecosystem located in Mayotte, the Dziani Dzaha Lake. ...
Gérard Sarazin; Didier Jézéquel; Christophe Leboulanger; Eric Fouilland; Emilie Le Floc’h; Marc Bouvy; Emmanuelle Gérard; Hélène Agogué; Cécile Bernard; Mylène Hugoni; Vincent Grossi; Marc Troussellier; Magali Ader
Comptes Rendus. Géoscience, Volume 352 (2020) p. 559-577
Mots clés : ... Thalassohaline lake, Endorheic ecosystem, Cyanobacteria, Methane emission, Biogeochemistry, Mayotte ...