geosciences Article Evidence of Unknown Paleo-Tsunami Events along the Alas Strait, West Sumbawa, Indonesia Bachtiar W. Mutaqin 1,2,* , Franck Lavigne 2,* , Patrick Wassmer 2,3, Martine Trautmann 3 , Puncak Joyontono 1 , Christopher Gomez 4 , Bagus Septiangga 5, Jean-Christophe Komorowski 6, Junun Sartohadi 7 and Danang Sri Hadmoko 1 1 Coastal and Watershed Research Group, Faculty of Geography, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia;
[email protected] (P.J.);
[email protected] (D.S.H.) 2 Laboratoire de Géographie Physique, Université Paris 1 Panthéon Sorbonne, 75231 Paris, France;
[email protected] 3 Faculté de Géographie et d’Aménagement, Université de Strasbourg, 67000 Strasbourg, France;
[email protected] 4 Department of Maritime Sciences, Graduate School of Maritime Sciences, Kobe University, Kobe, Hyogo 657-8501, Japan;
[email protected] 5 Directorate General of Water Resources, Ministry of Public Works and Housing, Jakarta 12110, Indonesia;
[email protected] 6 Institut de Physique du Globe de Paris UMR 7154, Université Sorbonne Paris Cité, 75005 Paris, France;
[email protected] 7 Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia;
[email protected] * Correspondence:
[email protected] (B.W.M.);
[email protected] (F.L.) Abstract: Indonesia is exposed to earthquakes, volcanic activities, and associated tsunamis. This is particularly the case for Lombok and Sumbawa Islands in West Nusa Tenggara, where evidence of Citation: Mutaqin, B.W.; Lavigne, F.; tsunamis is frequently observed in its coastal sedimentary record. If the 1815 CE Tambora eruption Wassmer, P.; Trautmann, M.; on Sumbawa Island generated a tsunami with well-identified traces on the surrounding islands, little Joyontono, P.; Gomez, C.; Septiangga, is known about the consequences of the 1257 CE tremendous eruption of Samalas on the neighboring B.; Komorowski, J.-C.; Sartohadi, J.; islands, and especially about the possible tsunamis generated in reason of a paucity of research on Hadmoko, D.S.