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All Journal Jurnal Lanskap Indonesia Indonesian Journal of Geography Jurnal Pendidikan Kewarganegaraan Undiksha REKA GEOMATIKA Jurnal Geodesi Undip TELKOMNIKA (Telecommunication Computing Electronics and Control) IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Indonesian Journal of Geospatial Journal of Engineering and Technological Sciences JURNAL SPASIAL JOURNAL ONLINE OF PHYSICS JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) JURNAL ILMIAH GEOMATIKA Jurnal Segara Jurnal Rekayasa Hijau JURNAL METEOROLOGI DAN GEOFISIKA Widyariset Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) International Journal of Disaster Management Jurnal Meteorologi dan Geofisika Journal of Engineering and Technological Sciences
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Journal : Journal of Engineering and Technological Sciences

 1 
Ground Deformation during Papandayan Volcano 2002 Eruption as Detected by GPS Surveys Abidin, Hasanuddin Z.; Andreas, H.; Gamal, M.; Sugandar, Ony K.; Meilano, Irwan; Hendrasto, M.; Kusuma, M. A.; Darmawan, D.; Purbawinata, M. A.; Wirakusumah, A. D.; Kimata, F.
Journal of Engineering and Technological Sciences Vol 35, No 1 (2003)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2964.335 KB) | DOI: 10.5614/itbj.eng.sci.2003.35.1.4

Abstract

Papandayan is an A-type active volcano located in the southern part of Garut Regency, about 70 km southeast of Bandung, Indonesia. Its earliest recorded eruption, and most violent and devastating outburst occurred in 1772 and the latest eruptions occurred in the period of 11 November to 8 December 2002, and consisted of freatic, freatomagmatic and magmatic types of eruption.During the latest eruption period, GPS surveys were conducted at several points inside and around the crater in a radial mode using the reference point located at Papandayan observatory around 10 km from the crater. At the points closest to the erupting craters, GPS displacements up to a few dm were detected, whereas at the points outside the crater, the displacements were in the cm level. The magnitude of displacements observed at each point also show a temporal variation according to the eruption characteristics. The results show that deformation during eruption tends to be local, e.g. just around the crater. Pressure source is difficult to be properly modeled from GPS results, due to limited GPS data available and differences in topography, geological structure and/or rheology related to each GPS station.
Estimation of Slip Distribution of the 2007 Bengkulu Earthquake from GPS Observations Using the LeastSquares Inversion Method Awaluddin, Moehammad; Meilano, Irwan; Widiyantoro, Sri
Journal of Engineering and Technological Sciences Vol 44, No 2 (2012)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (579.484 KB) | DOI: 10.5614/itbj.eng.sci.2012.44.2.6

Abstract

Continuous  Global  Positioning  System  (GPS)  observations  showed significant  crustal  displacements  as  a  result  of  the  Bengkulu  earthquake occurring on September 12, 2007. A maximum horizontal displacement of 2.11 m was observed at PRKB station, while the vertical component at BSAT station was lifted up with a maximum of 0.73 m, and the vertical component at LAIS station had subsided  –0.97 m. Adding more constraints on the inversion for the Bengkulu earthquake slip distribution inferred from GPS observations can help solve  the  underdetermined  least-squares  inversion.  Checkerboard  tests  were performed  to  help  conduct  the  weighting  for  constraining  the  inversion.  The inversion calculation yielded an optimal value for the slip distribution by giving the smoothing constraint a weight of 0.001 and the slip constraint a weight of = 0 at the edge of the earthquake rupture area. The maximum co-seismic slip of the optimal inversion calculation was 5.12 m at the lower area of PRKB station and BSAT station. The seismic moment calculated from the optimal slip distribution was 7.14 x 1021 Nm, which is equivalent to a magnitude of 8.5.
Estimation of Slip Distribution of the 2007 Bengkulu Earthquake from GPS Observations Using the LeastSquares Inversion Method Moehammad Awaluddin; Irwan Meilano; Sri Widiyantoro
Journal of Engineering and Technological Sciences Vol. 44 No. 2 (2012)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.eng.sci.2012.44.2.6

Abstract

Continuous  Global  Positioning  System  (GPS)  observations  showed significant  crustal  displacements  as  a  result  of  the  Bengkulu  earthquake occurring on September 12, 2007. A maximum horizontal displacement of 2.11 m was observed at PRKB station, while the vertical component at BSAT station was lifted up with a maximum of 0.73 m, and the vertical component at LAIS station had subsided  "“0.97 m. Adding more constraints on the inversion for the Bengkulu earthquake slip distribution inferred from GPS observations can help solve  the  underdetermined  least-squares  inversion.  Checkerboard  tests  were performed  to  help  conduct  the  weighting  for  constraining  the  inversion.  The inversion calculation yielded an optimal value for the slip distribution by giving the smoothing constraint a weight of 0.001 and the slip constraint a weight of = 0 at the edge of the earthquake rupture area. The maximum co-seismic slip of the optimal inversion calculation was 5.12 m at the lower area of PRKB station and BSAT station. The seismic moment calculated from the optimal slip distribution was 7.14 x 1021 Nm, which is equivalent to a magnitude of 8.5.
Ground Deformation during Papandayan Volcano 2002 Eruption as Detected by GPS Surveys Hasanuddin Z. Abidin; H. Andreas; M. Gamal; Ony K. Sugandar; Irwan Meilano; M. Hendrasto; M. A. Kusuma; D. Darmawan; M. A. Purbawinata; A. D. Wirakusumah; F. Kimata
Journal of Engineering and Technological Sciences Vol. 35 No. 1 (2003)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.eng.sci.2003.35.1.4

Abstract

Papandayan is an A-type active volcano located in the southern part of Garut Regency, about 70 km southeast of Bandung, Indonesia. Its earliest recorded eruption, and most violent and devastating outburst occurred in 1772 and the latest eruptions occurred in the period of 11 November to 8 December 2002, and consisted of freatic, freatomagmatic and magmatic types of eruption.During the latest eruption period, GPS surveys were conducted at several points inside and around the crater in a radial mode using the reference point located at Papandayan observatory around 10 km from the crater. At the points closest to the erupting craters, GPS displacements up to a few dm were detected, whereas at the points outside the crater, the displacements were in the cm level. The magnitude of displacements observed at each point also show a temporal variation according to the eruption characteristics. The results show that deformation during eruption tends to be local, e.g. just around the crater. Pressure source is difficult to be properly modeled from GPS results, due to limited GPS data available and differences in topography, geological structure and/or rheology related to each GPS station.
Co-Authors A. D. Wirakusumah A. D. Wirakusumah Achmad Faris Agidia L. Tiaratama Agung Syetiawan, Agung Alfita Puspa Handayani Alfita Puspa Handayani Alifah Hanif Aprizon Putra Ari Setiawan Bagoes Dwi Ramdhani Binta, Izaza Budi Parjanto D. Darmawan D. Darmawan Dahlan, Mohammad Zaini Danny Hilman Natawidjaja Danny Hilman Natawidjaja Dina A. Sarsito Dina A. Sarsito, Dina Dina Anggraeni Dina Anggraeni Sarsito Dina Anggraeni Sarsito Dina Anggraeni Sarsito, Dina Dina Anggreni Sarsito Dina Sarsito Dudy D. Wijaya Dudy Darmawan Wijaya Dudy Darmawan Wijaya, Dudy Dwi Arini Endra Gunawan Estu Kriswati Evita, Maria F. Kimata F. Kimata Faisal, Budi Gina Andriyani Goro , Garup Lambang H. Andreas H. Andreas Hadi Sofyan Hanif, Alifah Hanny Hafiar Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin, Hasanuddin Hendra Gunawan Henri Kuncoro Heri Andreas Heri Andreas Herlan Darmawan I Gst Ngr Yoga Jayantara Ilham Jamel Ilham Jamel, Ilham Imam Suyanto Intan H Fitri Irwan Gumilar, Irwan Irzaman, Irzaman Jayawarsa, A.A. Ketut Joni Efendi Joni Efendi, Joni Kobayashi, Hirohide Kosasih Prijatna Kosasih Prijatna, Kosasih Kumalasari, Ratih Kuncoro, Henri M. A. Kusuma M. A. Kusuma M. A. Purbawinata M. A. Purbawinata M. Asrurifak, M. M. Gamal M. Gamal M. Hendrasto M. Hendrasto Maria Evita Marta Nugraha Hidayat Masyhur Irsyam Mitra Djamal Moehammad Awaluddin Moh Yasin Mustikawati, Sekar Tanjung Nia Naelul Hasanah Nina Siti Aminah Nita Yuanita Ony K. Sugandar Ony K. Sugandar Pahlevi, Arisauna Maulidyan Pamumpuni, Astyka Prijatna, Kosasih Purwaningsih, Rr Diah Asih Putra Maulida Putra, Heriansyah Rahmy, Widyastri Atsary Ramdhani, Bagoes Dwi Rani, Medria Shekar RATIH KUMALASARI Ratih Kumalasari Retna Apsari Riko Maiyudi Rino Rino Rino Rino Roka Pratama S. Susilo Sarah Leila Hanief Sarah Leila Hanief, Sarah Sarsito, Dina Semeidi Husrin Shibata, Shozo Sofian, Ibnu Sri Widiyantoro Suchi Rahmadani Suryanto, Wiwit Susilo Susilo Susilo Susilo Sutomo Kahar Tanuwijaya, Zamzam Akhmad Jamaluddin Teriyuki Kato Wahyu Srigutomo Wahyudi Wahyudi Widjaja Martokusumo, Widjaja