Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA
Magma opening new fluid pathways through the crust can generate migrating seismic sources following the trail of the magma. By using Seismic Amplitude Ratio Analysis (SARA), it is possible to detect this seismic migration simply from the amplitudes of continuous data recorded at different stations i...
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sg-ntu-dr.10356-828512020-09-26T21:29:10Z Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA Tan, Chiou Ting Taisne, Benoît Neuberg, Jurgen Ahmad Basuki Asian School of the Environment Earth Observatory of Singapore Magma Migration Real-time Monitoring Science::Geology Magma opening new fluid pathways through the crust can generate migrating seismic sources following the trail of the magma. By using Seismic Amplitude Ratio Analysis (SARA), it is possible to detect this seismic migration simply from the amplitudes of continuous data recorded at different stations in a network, without having to do any picking of seismic phases. In this study, we present a modified method – Red-flag SARA, which adapts SARA for real-time monitoring. Red-flag SARA provides a quantitative tool to analyse amplitude ratios between stations in a network and detect temporal changes in these ratios. Since such changes imply seismic source location variations, Red-flag SARA is a handy tool during seismic crises to quickly answer the question of whether seismic activity, and therefore magma, is migrating or not. We tested Red-flag SARA on synthetic data and validated it using real data from two volcanoes – Piton de la Fournaise, Reunion Island, and Gede, Indonesia, for three scenarios: 1) magma migration ending as intrusion, 2) migration leading to eruption and 3) a burst of seismicity with no magma migration. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2019-08-22T04:28:10Z 2019-12-06T15:06:51Z 2019-08-22T04:28:10Z 2019-12-06T15:06:51Z 2019 Journal Article Tan, C. T., Taisne, B., Neuberg, J., & Ahmad Basuki. (2019). Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA. Journal of Volcanology and Geothermal Research, 384, 31-47. doi:10.1016/j.jvolgeores.2019.07.004 0377-0273 https://hdl.handle.net/10356/82851 http://hdl.handle.net/10220/49742 10.1016/j.jvolgeores.2019.07.004 en Journal of Volcanology and Geothermal Research © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) 17 p. application/pdf |
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Magma Migration Real-time Monitoring Science::Geology Tan, Chiou Ting Taisne, Benoît Neuberg, Jurgen Ahmad Basuki Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA |
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Magma opening new fluid pathways through the crust can generate migrating seismic sources following the trail of the magma. By using Seismic Amplitude Ratio Analysis (SARA), it is possible to detect this seismic migration simply from the amplitudes of continuous data recorded at different stations in a network, without having to do any picking of seismic phases. In this study, we present a modified method – Red-flag SARA, which adapts SARA for real-time monitoring. Red-flag SARA provides a quantitative tool to analyse amplitude ratios between stations in a network and detect temporal changes in these ratios. Since such changes imply seismic source location variations, Red-flag SARA is a handy tool during seismic crises to quickly answer the question of whether seismic activity, and therefore magma, is migrating or not. We tested Red-flag SARA on synthetic data and validated it using real data from two volcanoes – Piton de la Fournaise, Reunion Island, and Gede, Indonesia, for three scenarios: 1) magma migration ending as intrusion, 2) migration leading to eruption and 3) a burst of seismicity with no magma migration. |
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Asian School of the Environment |
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Asian School of the Environment Tan, Chiou Ting Taisne, Benoît Neuberg, Jurgen Ahmad Basuki |
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Article |
author |
Tan, Chiou Ting Taisne, Benoît Neuberg, Jurgen Ahmad Basuki |
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Tan, Chiou Ting |
title |
Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA |
title_short |
Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA |
title_full |
Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA |
title_fullStr |
Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA |
title_full_unstemmed |
Real-time assessment of potential seismic migration within a monitoring network using Red-flag SARA |
title_sort |
real-time assessment of potential seismic migration within a monitoring network using red-flag sara |
publishDate |
2019 |
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https://hdl.handle.net/10356/82851 http://hdl.handle.net/10220/49742 |
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1681057354418749440 |