On the use of remote infrasound and seismic stations to constrain the eruptive sequence and intensity for the 2014 Kelud eruption
The February 2014 eruption of Kelud volcano (Indonesia) destroyed most of the instruments near it. We use remote seismic and infrasound sensors to reconstruct the eruptive sequence. The first explosions were relatively weak seismic and infrasound events. A major stratospheric ash injection occurre...
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| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/80943 http://hdl.handle.net/10220/38987 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | The February 2014 eruption of Kelud volcano (Indonesia) destroyed most of the instruments
near it. We use remote seismic and infrasound sensors to reconstruct the eruptive sequence. The first
explosions were relatively weak seismic and infrasound events. A major stratospheric ash injection occurred
a few minutes later and produced long-lasting atmospheric and ground-coupled acoustic waves that were
detected as far as 11,000 km by infrasound sensors and up to 2300 km away on seismometers. A seismic
event followed ∼12 minutes later and was recorded 7000 km away by seismometers. We estimate a
volcanic intensity around 10.9, placing the 2014 Kelud eruption between the 1980 Mount St. Helens and
1991 Pinatubo eruptions intensities. We demonstrate how remote infrasound and seismic sensors are critical
for the early detection of volcanic explosions, and how they can help to constrain and understand eruptive
sequences. |
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