Articles | Volume 24, issue 9
https://doi.org/10.5194/nhess-24-3129-2024
https://doi.org/10.5194/nhess-24-3129-2024
Research article
 | 
19 Sep 2024
Research article |  | 19 Sep 2024

Forearc crustal faults as tsunami sources in the upper plate of the Lesser Antilles subduction zone: the case study of the Morne Piton fault system

Melody Philippon, Jean Roger, Jean-Frédéric Lebrun, Isabelle Thinon, Océane Foix, Stéphane Mazzotti, Marc-André Gutscher, Leny Montheil, and Jean-Jacques Cornée

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Cited articles

Accary, F. and Roger, J.: Tsunami catalog and vulnerability of Martinique (Lesser Antilles, France), Science of Tsunami Hazards, 29, 3, ISSN 8755-6839 (Print), 2168-6009 (Online), 2010. 
Ajvazi, B. and Czimber, K.: A comparative analysis of different DEM interpolation methods in GIS: case study of Rahovec, Kosovo, Geodesy and Cartography, 45, 43–48, https://doi.org/10.3846/gac.2019.7921, 2019. 
Álvarez-Gómez, J. A., Gutiérrez, O. Q. G., Aniel-Quiroga, Í., and González, M.: Tsunamigenic potential of outer-rise normal faults at the Middle America trench in Central America, Tectonophysics, 574, 133–143, https://doi.org/10.1016/j.tecto.2012.08.014, 2012. 
Arun, P. V.: A comparative analysis of different DEM interpolation methods, The Egyptian Journal of Remote Sensing and Space Science, 16, 133–139, https://doi.org/10.1016/j.ejrs.2013.09.001, 2013. 
Barkan, R. and ten Brink, U.: Tsunami simulations of the 1867 virgin island earthquake: Constraints on epicenter location and fault parameterstsunami simulations of the 1867 virgin island earthquake: Constraints on epicenter location, B. Seismol. Soc. Am., 100, 995–1009, https://doi.org/10.1785/0120090211, 2010. 
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Short summary
Using novel geophysical datasets, we reassess the slip rate of the Morne Piton fault (Lesser Antilles) at 0.2 mm yr−1 by dividing by four previous estimations and thus increasing the earthquake time recurrence and lowering the associated hazard. We evaluate a plausible magnitude for a potential seismic event of Mw 6.5 ± 0.5. Our multi-segment tsunami model representative of the worst-case scenario gives an overview of tsunami generation if all the fault segments ruptured together.
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