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Title: Preliminary results of characteristic seismic anisotropy beneath Sunda-Banda subduction-collision zone

Determining of seismic anisotropy allowed us for understanding the deformation processes that occured in the past and present. In this study, we performed shear wave splitting to characterize seismic anisotropy beneath Sunda-Banda subduction-collision zone. For about 1,610 XKS waveforms from INATEWS-BMKG networks have been analyzed. From its measurements showed that fast polarization direction is consistent with trench-perpendicular orientation but several stations presented different orientation. We also compared between fast polarization direction with absolute plate motion in the no net rotation and hotspot frame. Its result showed that both absolute plate motion frame had strong correlation with fast polarization direction. Strong correlation between the fast polarization direction and the absolute plate motion can be interpreted as the possibility of dominant anisotropy is in the asthenosphere.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Study Program of Earth Sciences, Faculty of Earth Sciences and Technology, Institute of Technology Bandung, Bandung 40132 (Indonesia)
  2. (Indonesia)
  3. Indonesia’s Agency for Meteorology Climatology and Geophysics, Jakarta 10610 (Indonesia)
Publication Date:
OSTI Identifier:
22391567
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1658; Journal Issue: 1; Conference: ISEDM 2014: 4. International Sympsoium on Earthquake and Disaster Mitigation 2014, Bandung (Indonesia), 11-12 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; COMPARATIVE EVALUATIONS; CORRELATIONS; DEFORMATION; GEOPHYSICS; ORIENTATION; PLATES; POLARIZATION; ROTATION; SEISMIC WAVES; SEISMICITY; SEISMOLOGY; SHEAR; WAVE FORMS