The subduction plate interface: rock record and mechanical coupling (from long to short timescales)

A review of the rupture characteristics of the 2011 Tohoku-oki Mw 9.1 earthquake

Sediment control on subduction plate speeds

Relocation of earthquakes recorded by the agency for meteorology, climatology and geophysics (BMKG) in Indonesia and inversions of global positioning system (GPS) data reveal clear seismic gaps to the south of the island of Java. These gaps may be related to potential sources of future megathrust earthquakes in the region. To assess the expected inundation hazard, tsunami modeling was conducted based on several scenarios involving large tsunamigenic earthquakes generated by ruptures along segments of the megathrust south of Java. The worst-case scenario, in which the two megathrust segments spanning Java rupture simultaneously, shows that tsunami heights can reach ~ 20 m and ~ 12 m on the south coast of West and East Java, respectively, with an average maximum height of 4.5 m along the entire south coast of Java. These results support recent calls for a strengthening of the existing Indonesian Tsunami Early Warning System (InaTEWS), especially in Java, the most densely populated island in Indonesia.

/pdf/implications-for-megathrust-earthquakes-and-tsunamis-from-1oio4phm2e.pdf

Implications for megathrust earthquakes and tsunamis from seismic gaps south of Java Indonesia

Numerous observations pertaining to the magnitude 9.

/pdf/learning-from-crustal-deformation-associated-with-the-m9-chy1yu5c46.pdf

Yuki Hatanaka

Papers

Resolving depth-dependent subduction zone viscosity and afterslip from postseismic displacements following the 2011 Tohoku-oki, Japan earthquake