Bridging the gap between subduction dynamics and the long-term strength of the Sunda megathrust.

ABSTRACT: The link between great earthquakes and subduction dynamics across a wide range of scales remains a crucial, yet elusive, tenet of the seismotectonics of convergent margins. Here, we show high-performance computational simulations of the three-dimensional Sunda subduction zone dynamics matching plate motions, tectonics and current deformation, thereby providing insights into the stress regime of the Java-Sumatra-Andaman margin. Testing various tectonic forces reveals the primary control of the Java slab pull and induced mantle flow on the whole margin tectonics, driving northward-increasing oblique convergence, Sumatran trench advance and increased tectonic coupling along this segment. The modelled deviatoric stresses reproduce the geodetically-constrained interseismic compression in Sumatr

SUBMITTER: Capitanio FA 

PROVIDER: S-EPMC12663136 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature