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Susilo Susilo
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Evaluating GPS CORS Data for Crustal Deformation Analysis in East Java Irene Rwabudandi; Ira Mutiara Anjasmara; Susilo Susilo
Jurnal Teknik ITS Vol 8, No 2 (2019)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1073.168 KB) | DOI: 10.12962/j23373539.v8i2.49686

Abstract

The tectonic setting of Indonesia is very complex due to its location on the boundaries of several major tectonic plates. The complexity of the tectonics also makes Indonesia prone to natural disasters such as earthquakes, tsunamis, volcanic eruptions etc. Crustal deformation caused by the tectonics activities can be monitored using geodetic techniques such as Global Positioning System (GPS) survey, Interferometry Synthetic Aperture Radar (InSAR) processing, etc. In this research, we analyze the crustal deformation in the northern part of East Java using ten GPS Continuously Operating Reference Stations (CORS) data provided by the Indonesian Geospatial Information Agency from 2015 to 2018. The results showed the horizontal movement toward southeast for all the stations. The horizontal velocity rates are range between 2.63 cm/yr and 2.96 cm/yr. For the vertical displacements, nine stations are subject to subsidence with the rates range from -0.021cm/yr to -0.4 cm/yr that we suspect related to the geological settings of the study area.
A Possibility of Real Time Earthquake Magnitude Determination using GPS for Tsunami warning System in Indonesia Sulastri Sulastri; Buldan Muslim; Bambang Sunardi; Supriyanto Rohadi; Yusuf Hadi Perdana; Muzli Muzli; Susilo Susilo; Jonny Effendi
Jurnal Sains Dasar Vol 7, No 2 (2018): October 2018
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v7i2.21258

Abstract

This paper contains preliminary study about the possibility of real time earthquake magnitude determination from GPS in Indonesia for tsunami warning system. Until now, the determination of earthquake sources in Indonesia by using seismic records. By a collaborative research and utilizing the GPS networks managed by Indonesian Geospatial Information Agency (Badan Informasi Geospasial/ BIG), there is a chance to determine the earthquake magnitude in another way, instead of using seismograph and accelerograph networks. The displacement vector from GPS measurements plays important rules in the earthquake magnitude determination. In the future, the earthquake magnitude determination using GPS could support the Indonesia Tsunami Early Warning System conducted by BMKG. 
Co-Authors Bambang Sunardi Buldan Muslim Ira Mutiara Anjasmara Irene Rwabudandi Jonny Effendi Muzli Muzli Sulastri Sulastri Supriyanto Rohadi Yusuf Hadi Perdana