Rotation and strain rate of sulawesi from geometrical velocity field

Conference paper (2017)

Authors

D. A. Sarsito Institute of Technology Bandung
YO Susilo Geospatial Information Agency
W.J.F. Simons Astrodynamics & Space Missions - Aerospace Engineering
Hasanuddin Z. Abidin Institute of Technology Bandung
B. Sapiie Institute of Technology Bandung
W. Triyoso Institute of Technology Bandung
H. Andreas Institute of Technology Bandung
Research Group
Astrodynamics & Space Missions (Aerospace Engineering) (TU Delft)
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Published Date

25-07-2017

Language

English

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Faculty

Aerospace Engineering

Department

Space Engineering

Research Group

Astrodynamics & Space Missions

Abstract

One of methods that can be used to determine the tectonic deformation status is rate estimation from geometric rotation and strain using quantitative velocity data from GPS observations. Microplate Sulawesi region located in the zone of triple junction (Eurasia, Australia and Philippine Sea Plates) has very complex tectonic and seismic condition, which is why become very important to know its recent deformation status in order to study neotectonic and disaster mitigation. Deformation rate quantification is estimated in two parameters: rotation and geodetic strain rate of each GPS station Delaunay triangle in the study area. The analysis in this study is not done using the grids since there is no rheological information at location that can be used as the interpolation-extrapolation constraints. Our analysis reveals that Sulawesi is characterized by rapid rotation in several different domains and compression-strain pattern that varies depending on the type and boundary conditions of microplate. This information is useful for studying neo tectonic deformation status and earthquake disaster mitigation.

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