FN Archimer Export Format
PT J
TI Combining hydro-acoustic sources and bathymetric differences to track the vent evolution of the Mayotte eruption, Mozambique Channel
BT 
AF Saurel, Jean-Marie
   Retailleau, Lise
   Deplus, Christine
   Loubrieu, Benoit
   Pierre, Delphine
   Frangieh, Michel
   Khelifi, Nassim
   Bonnet, Robin
   Ferrazzini, Valérie
   Bazin, Sara
   Guyavarch, Pierre
   Moulin, Maryline
AS 1:1;2:1,2;3:1;4:3;5:3;6:1;7:1;8:3;9:1,2;10:4;11:3;12:3;
FF 1:;2:;3:;4:PDG-REM-GEOOCEAN-ANTIPOD;5:PDG-REM-GEOOCEAN-ANTIPOD;6:;7:;8:;9:;10:;11:PDG-REM-GEOOCEAN-ANTIPOD;12:PDG-REM-GEOOCEAN-GIPS;
C1 Université Paris Cité, Institut de physique du globe de Paris, CNRS, Paris, France
   Observatoire volcanologique du Piton de la Fournaise, Institut de physique du globe de Paris, La Plaine des Câfres, Réunion
   University Brest, CNRS, Ifremer, Plouzane, France
   University Brest, CNRS, Ifremer, Plouzane, France
C2 UNIV PARIS CITE, FRANCE
   IPGP, FRANCE
   IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-REM-GEOOCEAN-ANTIPOD
   PDG-REM-GEOOCEAN-GIPS
UM GEO-OCEAN
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-univ-france
IF 2.9
TC 1
UR https://archimer.ifremer.fr/doc/00796/90829/96440.pdf
LA English
DT Article
CR MAYOBS
   MAYOBS1
   MD 228 / MAYOBS15
BO Marion Dufresne
DE ;hydro-acoustic analysis;bathymetric analysis;multi-beam echo sounder;submarine eruption;Mayotte;lava flows;ocean bottom seismometer
AB The majority of Earth volcanism takes place in the deep ocean. Deep-sea volcanoes are particularly complicated to study due to their remoteness. Very different methods can be used and their combination can lead to crucial information about submarine volcanoes behavior. In Mayotte, Comoros archipelago, efforts have been made to study and monitor the deep volcanic activity (∼3000 m) currently occurring east of Mayotte through various methods and campaigns on land and at sea. In October 2020, a line of 10 Ocean Bottom Seismometers was deployed during 10 days, leading to a hand-picked catalog of more than a thousand of hydro-acoustic signals, which have been associated with reactions between hot lava and deep cold ocean waters. During the same period, repeated swath bathymetry surveys were performed over an active lava flow field. We compare the time evolution of the hydro-acoustic events locations and bathymetry differences observed between each survey. While bathymetric information gives absolute location of new lava flows, hydro-acoustic events give detailed relative time variations leading to short-term spatial evolution. Bathymetric information thus provides snapshots of the eruptive area evolution at specific times, when hydro-acoustic signals show its continuous evolution. By combining both complementary analyses we are able to clearly define the detailed evolution of the lava flows pattern in the short time period of 10 days. Applied to the data already acquired on Mayotte since 2019, this method could allow us to estimate more precisely the volcano effusion rate and its evolution, giving further insights on the feeding system. 
PY 2022
PD OCT
SO Frontiers In Earth Science
SN 2296-6463
PU Frontiers Media SA
VL 10
UT 000875584500001
DI 10.3389/feart.2022.983051
ID 90829
ER

EF