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Title: Micro-earthquake signal analysis and hypocenter determination around Lokon volcano complex

Abstract

Mount Lokon is one of five active volcanoes which is located in the North Sulawesi region. Since June 26{sup th}, 2011, standby alert set by the Center for Volcanology and Geological Hazard Mitigation (CVGHM) for this mountain. The Mount Lokon volcano erupted on July 4{sup th}, 2011 and still continuously erupted until August 28{sup th}, 2011. Due to its high seismic activity, this study is focused to analysis of micro-earthquake signal and determine the micro-earthquake hypocenter location around the complex area of Lokon-Empung Volcano before eruption phase in 2011 (time periods of January, 2009 up to March, 2010). Determination of the hypocenter location was conducted with Geiger Adaptive Damping (GAD) method. We used initial model from previous study in Volcan de Colima, Mexico. The reason behind the model selection was based on the same characteristics that shared between Mount Lokon and Colima including andesitic stratovolcano and small-plinian explosions volcanian types. In this study, a picking events was limited to the volcano-tectonics of A and B types, hybrid, long-period that has a clear signal onset, and local tectonic with different maximum S – P time are not more than three seconds. As a result, we observed the micro-earthquakes occurred in themore » area north-west of Mount Lokon region.« less

Authors:
 [1];  [2];  [3]
  1. Geophysical Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132 (Indonesia)
  2. Global Geophysical Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132 (Indonesia)
  3. Center for Volcanology and Geological Hazard Mitigation (CVGHM), Geological Agency, Bandung, 40122 (Indonesia)
Publication Date:
OSTI Identifier:
22391597
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
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); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; DAMPING; EARTHQUAKES; ERUPTION; GEOPHYSICS; HAZARDS; HYPOCENTERS; MEXICO; MITIGATION; MOUNTAINS; SEISMICITY; SEISMOGRAPHS; SEISMOLOGY; SIGNALS; TECTONICS; VOLCANOES

Citation Formats

Firmansyah, Rizky, E-mail: rizkyfirmansyah@hotmail.com, Nugraha, Andri Dian, E-mail: nugraha@gf.itb.ac.id, and Kristianto, E-mail: kris@vsi.esdm.go.id. Micro-earthquake signal analysis and hypocenter determination around Lokon volcano complex. United States: N. p., 2015. Web. doi:10.1063/1.4915048.
Firmansyah, Rizky, E-mail: rizkyfirmansyah@hotmail.com, Nugraha, Andri Dian, E-mail: nugraha@gf.itb.ac.id, & Kristianto, E-mail: kris@vsi.esdm.go.id. Micro-earthquake signal analysis and hypocenter determination around Lokon volcano complex. United States. doi:10.1063/1.4915048.
Firmansyah, Rizky, E-mail: rizkyfirmansyah@hotmail.com, Nugraha, Andri Dian, E-mail: nugraha@gf.itb.ac.id, and Kristianto, E-mail: kris@vsi.esdm.go.id. Fri . "Micro-earthquake signal analysis and hypocenter determination around Lokon volcano complex". United States. doi:10.1063/1.4915048.
@article{osti_22391597,
title = {Micro-earthquake signal analysis and hypocenter determination around Lokon volcano complex},
author = {Firmansyah, Rizky, E-mail: rizkyfirmansyah@hotmail.com and Nugraha, Andri Dian, E-mail: nugraha@gf.itb.ac.id and Kristianto, E-mail: kris@vsi.esdm.go.id},
abstractNote = {Mount Lokon is one of five active volcanoes which is located in the North Sulawesi region. Since June 26{sup th}, 2011, standby alert set by the Center for Volcanology and Geological Hazard Mitigation (CVGHM) for this mountain. The Mount Lokon volcano erupted on July 4{sup th}, 2011 and still continuously erupted until August 28{sup th}, 2011. Due to its high seismic activity, this study is focused to analysis of micro-earthquake signal and determine the micro-earthquake hypocenter location around the complex area of Lokon-Empung Volcano before eruption phase in 2011 (time periods of January, 2009 up to March, 2010). Determination of the hypocenter location was conducted with Geiger Adaptive Damping (GAD) method. We used initial model from previous study in Volcan de Colima, Mexico. The reason behind the model selection was based on the same characteristics that shared between Mount Lokon and Colima including andesitic stratovolcano and small-plinian explosions volcanian types. In this study, a picking events was limited to the volcano-tectonics of A and B types, hybrid, long-period that has a clear signal onset, and local tectonic with different maximum S – P time are not more than three seconds. As a result, we observed the micro-earthquakes occurred in the area north-west of Mount Lokon region.},
doi = {10.1063/1.4915048},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1658,
place = {United States},
year = {2015},
month = {4}
}