Articles | Volume 12, issue 11
Research article
01 Nov 2021
Research article |  | 01 Nov 2021

Marine forearc structure of eastern Java and its role in the 1994 Java tsunami earthquake

Yueyang Xia, Jacob Geersen, Dirk Klaeschen, Bo Ma, Dietrich Lange, Michael Riedel, Michael Schnabel, and Heidrun Kopp

Data sets

ISC-EHB 1964--2016, an Improved Data Set for Studies of Earth Structure and Global Seismicity ( E. R. Engdahl, D. Di Giacomo, B. Sakarya, C. G. Gkarlaouni, J. Harris, and D. A. Storchak

Preliminary reference Earth model ( A. M. Dziewonski and D. L. Anderson

The global CMT project 2004--2010: Centroid-moment tensors for 13,017 earthquakes ( G. Ekstr\"{o}m, M. Nettles, and A. M. Dziewoński

New global marine gravity model from CryoSat-2 and Jason-1 reveals buried tectonic structure ( D. T. Sandwell, R. D. M\"{u}ller, W. H. F. Smith, E. Garcia, and R. Francis

Short summary
The 2 June 1994 Java tsunami earthquake ruptured in a seismically quiet subduction zone and generated a larger-than-expected tsunami. Here, we re-process a seismic line across the rupture area. We show that a subducting seamount is located up-dip of the mainshock in a region that did not rupture during the earthquake. Seamount subduction modulates the topography of the marine forearc and acts as a seismic barrier in the 1994 earthquake rupture.