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#Sumatra java slab xsection software#
Havskov J and Ottemoller L 1999 SEISAN earthquake analysis software Seismol. Hall P S and Kincaid C 2001 Diapiric flow at subduction zones: A recipe for rapid transport Science 292(5526) 2472–2475.
441 121–131.īaioumy H, Nawawi M, Wagner K and Arifin M H 2015 Geochemistry and geothermometry of non-volcanic hot springs in West Malaysia J. The predominant low-V anomaly is less than 35 km in depth, but other low-V anomalies are deeper.Īmalfi O, Phil C, David R and Sri H 2016 Sensitivity analysis for probabilistic seismic hazard analysis (PSHA) in the Aceh Fault Segment, Indonesia Geol.
Different east–west and north–south cross-sections reveal the subsurface anomalies at various parts of the region. We consider that asthenospheric upwelling around the SSZ may provide heat source for the 40 or more hot springs distributed north–south in peninsular Malaysia. At these depths, the eastern shorelines of Sumatra, most parts of Malacca Strait and the west coast of peninsular Malaysia show varying degrees of positive velocity anomalies. Below the Moho, the subducting slab, represented by a high-velocity (high-V) anomaly, trends in the orientation of Sumatra. The prominent low-V anomaly is thickest around the Conrad, extending beneath Straits of Malacca and parts of peninsular Malaysia, but disappears around the Moho in the region. Tomographic results show low-velocity (low-V) anomalies that reflect both accretion and possibly, asthenospheric upwelling associated with subduction of the Australian Plate beneath Eurasia around the SSZ.
Inversion is performed with 99,741 first-arrival p waves from 16,196 local and regional earthquakes occurred around the Sumatra Subduction Zone (SSZ) between 19. P wave tomographic imaging of the crust down to a depth of 90 km is performed beneath the region encompassing Sumatra, Java, Malacca Strait, peninsular Malaysia and Singapore.
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