Articles | Volume 10, issue 3
https://doi.org/10.5194/nhess-10-589-2010
https://doi.org/10.5194/nhess-10-589-2010
26 Mar 2010
 | 26 Mar 2010

Landslide tsunami hazard in the Indonesian Sunda Arc

S. Brune, A. Y. Babeyko, S. Ladage, and S. V. Sobolev

Abstract. The Indonesian archipelago is known for the occurrence of catastrophic earthquake-generated tsunamis along the Sunda Arc. The tsunami hazard associated with submarine landslides however has not been fully addressed. In this paper, we compile the known tsunamigenic events where landslide involvement is certain and summarize the properties of published landslides that were identified with geophysical methods. We depict novel mass movements, found in newly available bathymetry, and determine their key parameters. Using numerical modeling, we compute possible tsunami scenarios. Furthermore, we propose a way of identifying landslide tsunamis using an array of few buoys with bottom pressure units.

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