Moreover, we report that the dip of the subducted slab varies significantly (i.e., dramatically decreases) across the Sunda Strait therefore, we infer that another subvertical slab tear exists beneath the Sunda Strait. Our inversion further indicates that the subducted slab is characterized by a tear at a depth of 120 km between 0° N and 2° N, which may be closely related to the supervolcanic eruption of the Toba caldera in northern Sumatra during the Pleistocene. The subducted slab beneath the northern tip of Sumatra barely arrives at the 410-km discontinuity, while the slab in the south penetrates to a depth of at least 660 km. Our tomographic results also reveal that the maximum penetration depth of the subducted slab increases from the north to south. Find all the transport options for your trip from Java to Sumatra right here. residuals less than 1. Contours of topography are at 500 m intervals. Dots show telemetered seismic stations, open circles show analog seismic stations, and triangles show vol- canoes. Below northern Sumatra, we find that the slab is folded at depth, exhibiting geometry similar to that of the volcanic arc and the trench at the surface. Boxes show regions of cross sections of Figure 3 (as labeled). Rome2rio is a door-to-door travel information and booking engine, helping you get to and from any location in the world. SLAB ORIENTATION 131 SUMATRA 3 97øE 98øE 99øE 100øE 101 øE 4øN IøN Figure 2a. Additionally, the slab exhibits a sinusoidal shape with a low degree of curvature. sumslab2str02.23.18.grd Sumatra slab strike grid 330.28 KB: application/x-hdf: sumslab2str02.23.18.xyz Sumatra slab strike text file 15. Rome2rio makes travelling from Java to Sumatra easy. Our P-wave tomographic images derived from regional seismic and teleseismic traveltime data demonstrate that the slab in the upper mantle generally follows the strike of the trench and the orientation of the volcanic arc. The seismic data accumulated by this network make it possible to achieve high-resolution tomographic images of the velocity structure beneath Sumatra by using eikonal equation-based seismic tomography method. Since 2005, Indonesia has been establishing a relatively dense seismic network for real time earthquake monitoring and tsunami warning. The geometry of the subducted Indo-Australian plate beneath Sumatra is still controversial because of the historical lack of a dense seismic network.
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