SISMANTILLES 1

Type	Oceanographic cruise
Set	This cruise is part of the set SISMANTILLES
Ship	Le Nadir
Ship owner	Ifremer
Dates	27/11/2001 - 22/12/2001
Chief scientist(s)	HIRN Alfred
	INSTITUT DE PHYSIQUE DU GLOBE DE PARIS - UMR 7154, UMS 3454 1 rue Jussieu 75005 Paris +33 (0)1 83 95 74 00 https://www.ipgp.fr/
DOI	10.17600/1080060
Objective	The SISMANTILLES cruise was part of a coordinated research project on the structure and the seismic and volcanic activity of an active subduction zone found in the Lesser Antilles Island arc, namely where Martinique and Guadeloupe are located. The overall objective was to update our understanding of the interaction of converging plates and their internal deformation in this zone. This is one of the most poorly known subduction zones, due to, in particular, its current moderate level of seismicity and its very short historical record. A significant international research effort was already in progress on the seismogenic zone of the large subduction zones in the periphery of the Pacific Ocean. Here, we wished to highlight another typical example, that of small-scale island arcs. To study the deep structure of this active margin, we adapted multichannel seismic reflection (MCS) to greater depths by optimizing powerful "single-bubble" sources; 2,500 km of profiles were made. The seismic refraction method was implemented from the same source recorded from land sensors and 39 ocean-bottom sensors (OBS). Complementary methods were used, such as tomography based on the earthquakes recorded using by OBS sensors on the seafloor and sensors on land. Observation of local earthquakes was to be radically improved by using a temporary network of sensors deployed in the (OBS sensors) and increased density on land. These data were to give an instant image of the deformation and constraint regime and focal mechanism distribution. We thus aimed to explore the relationship between the instantaneous deformation and the final deformation whose marks are left in the structure. The spatial distribution was to be discussed in terms of structural changes and evaluation of natural hazards.

Data managed by SISMER

Bibliography

Publications

Philippon Melody, Roger Jean, Lebrun Jean Frédéric, Thinon Isabelle, Foix Oceane, Mazzotti Stéphane, Gutscher Marc-Andre, Montheil Leny, Cornée Jean-Jacques. Forearc crustal faulting and estimated worst-case tsunami scenario in the upper plate of subduction zones. Case study of the Morne Piton Fault system (Lesser Antilles, Guadeloupe Archipelago). Natural Hazards and Earth System Sciences IN PRESS. Publisher's official version : https://doi.org/10.5194/nhess-2023-222 , Open Access version : https://archimer.ifremer.fr/doc/00873/98486/

Cornée Jean-Jacques, de Min Lyvane, Lebrun Jean-Frédéric, Quillévéré Frédéric, Melinte-Dobrinescu Mihaela, Boudagher-Fadel Marcelle, Montheil Lény, Marcaillou Boris, Thinon Isabelle, Philippon Mélody (2023). Paleogeographic evolution and vertical motion of the central Lesser Antilles forearc since the Early Miocene: A potential driver for land fauna dispersals between the americas. Marine And Petroleum Geology, 152, 106264 (20p.). Publisher's official version : https://doi.org/10.1016/j.marpetgeo.2023.106264 , Open Access version : https://archimer.ifremer.fr/doc/00833/94527/

Boucard M, Marcaillou B, Lebrun Jf, Laurencin M, Klingelhoefer Frauke , Laigle M, Lallemand S, Schenini L, Graindorge David, Cornee Jj, Munch P, Philippon M, The Antithesis 1, 3 And Garanti Scientific Teams. (2021). Paleogene V-shaped basins and Neogene subsidence of the Northern Lesser Antilles Forearc. Tectonics, 40(3), e2020TC006524 (18p.). Publisher's official version : https://doi.org/10.1029/2020TC006524 , Open Access version : https://archimer.ifremer.fr/doc/00651/76351/

Paulatto Michele, Laigle Mireille, Galve Audrey, Charvis Philippe, Sapin Martine, Bayrakci Gaye, Evain Mikael , Kopp Heidrun (2017). Dehydration of subducting slow-spread oceanic lithosphere in the Lesser Antilles. Nature Communications, 8, 15980 (1-11). Publisher's official version : https://doi.org/10.1038/ncomms15980 , Open Access version : https://archimer.ifremer.fr/doc/00392/50321/

de Min L., Lebrun J. -F., Cornee J. -J., Muench P., Leticee J. L., Quillevere F., Melinte-Dobrinescu M., Randrianasolo A., Marcaillou B., Zami F. (2015). Tectonic and sedimentary architecture of the Karukéra spur: A record of the Lesser Antilles fore-arc deformations since the Neogene. Marine Geology, 363, 15-37. https://doi.org/10.1016/j.margeo.2015.02.007

Laigle Mireille, Becel Anne, de Voogd Beatrice, Sachpazi Maria, Bayrakci Gaye, Lebrun Jean-Frederic, Evain Mikael (2013). Along-arc segmentation and interaction of subducting ridges with the Lesser Antilles Subduction forearc crust revealed by MCS imaging. Tectonophysics, 603, 32-54. Publisher's official version : https://doi.org/10.1016/j.tecto.2013.05.028 , Open Access version : https://archimer.ifremer.fr/doc/00139/25003/

Thesis using campaign data

Bénâtre Gaëlle (2022). Sismotectonique du prisme de la Barbade : implications sur le potentiel sismogénique de la zone de subduction des Antilles. PhD Thesis, Université Paris Cité.

Cordrie Louise (2021). Identification et caractérisation des séismes passés de l'arc des Petites Antilles : simulation des tsunamis et du transport sédimentaire / Identification and characterization of the Lesser Antilles arc past earthquakes : insight from tsunami modeling and sediment transport simulation. PhD Thesis, Université de Paris.

Laurencin Muriel (2017). Etude de la géométrie, de la nature et des déformations de la zone de subduction des Petites Antilles du Nord / Deep structure geometry, crust nature and tectonic deformation in the northern Lesser Antilles margin. PhD Thesis, Université de Bretagne Occidentale.