Recent GPS-based long wavelength crustal deformation revealed active postseismic deformation due to the 2006 Yogyakarta earthquake
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Cecep Pratama
, Leni Sophia Heliani
Abstract
We analyze the Global Positioning System (GPS)-derived strain rate distribution to investigate active crustal structure in Central Java, Indonesia, using ten years (2010–2019) continuous and permanent observation data. Central Java is the third-most populous province in Indonesia where postseismic deformation of devastating Yogyakarta earthquake in 2006 might influence the GPS data. The postseismic extensional response might overshadow the low contractional process due to active tectonics deformation. A decomposition method of a calculated strain rate shows a long wavelength feature with the extensional region in the vicinity of the 2006 Yogyakarta earthquake may reflect the postseismic process remain active. The short wavelength pattern is sharpening potential active tectonics dominated by oblique Northwest-Southeast dip-slip motion with East-West left-lateral sense. Our result demonstrates essential implications for assessing future seismic hazard potential within a low strain rate such as the Central Java region.
Funding source: Universitas Gadjah Mada
Funding statement: This study was partially supported by the 2020 Indonesia Collaborative Research of Universitas Gadjah Mada (UGM).
Acknowledgment
The authors thank the anonymous reviewer and editor for constructive and valuable comments to improve this manuscript. We are indebted to Geospatial Information Agency of Indonesia (BIG) for providing continuous GPS observation data. Most figures were generated by the Generic Mapping Tools [38].
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Validating the impact of various ionosphere correction on mid to long baselines and point positioning using GPS dual-frequency receivers
- Target-based terrestrial laser scan registration extended by target orientation
- Linear discontinuous ground deformation detection based on coherence analysis of pre and post event radar image pairs
- GNSS time and frequency transfers through national positioning, navigation and timing infrastructure
- Recent GPS-based long wavelength crustal deformation revealed active postseismic deformation due to the 2006 Yogyakarta earthquake
- Effect of PCV and attitude on the precise orbit determination of Jason-3 satellite
- Geometric quality control for bio-based building elements: Study case segmented experimental shell
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Validating the impact of various ionosphere correction on mid to long baselines and point positioning using GPS dual-frequency receivers
- Target-based terrestrial laser scan registration extended by target orientation
- Linear discontinuous ground deformation detection based on coherence analysis of pre and post event radar image pairs
- GNSS time and frequency transfers through national positioning, navigation and timing infrastructure
- Recent GPS-based long wavelength crustal deformation revealed active postseismic deformation due to the 2006 Yogyakarta earthquake
- Effect of PCV and attitude on the precise orbit determination of Jason-3 satellite
- Geometric quality control for bio-based building elements: Study case segmented experimental shell