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Showing 1–2 of 2 results
Advanced filters: Author: Yusuf Djajadihardja Clear advanced filters

  • Sediments accumulated in a subduction trench are usually unconsolidated and impede the updip propagation of fault rupture during an earthquake. Seismic images of the southern Sumatra–Andaman trench reveal blocks of consolidated sediment that may have enabled fault rupture in 2004 to propagate up fault dip, thus further seaward, increasing the tsunami magnitude.

    • Sean P. S. Gulick
    • James A. Austin Jr
    • Haryadi Permana
    Research
    Nature Geoscience
    Volume: 4, P: 453-456

  • The subduction of topographic features has been linked both to earthquake generation and the segmentation of faults. Seismic imaging reveals a seamount subducted to 40-km depth below Sumatra that is associated with an aseismic zone, suggesting that at this location, the seamount reduces coupling of the slab and overriding plate.

    • Satish C. Singh
    • Nugroho Hananto
    • Heri Harjono
    Research
    Nature Geoscience
    Volume: 4, P: 308-311