TY - JOUR
T1 - Reconstructing surface eruptive sequence of 2018 small phreatic eruption of Iwo-yama volcano, Kirishima Volcanic Complex, Japan, by infrasound cross-correlation analysis
AU - Muramatsu, Dan
AU - Matsushima, Takeshi
AU - Ichihara, Mie
N1 - Funding Information:
We thank K. Aizawa and Y. Tajima for their insightful discussions and comments. We thank the Kagoshima Local Meteorological Office, JMA, who provided the monitoring camera data. The aerial photograph used in Fig. was taken from the GSI Tiles of the Geospatial Information Authority of Japan. Constructive comments from two anonymous reviewers and associate editor A. Jolly have greatly improved the manuscript. This work was supported by the MEXT Earthquake and Volcano Hazards Observation and Research Program, MEXT Integrated Program for Next Generation Volcano Research and Human Resource Development, ERI JURP 2016B03, and JSPS KAKENHI Grant Number JP20J10734.
Funding Information:
This work was supported by the MEXT Earthquake and Volcano Hazards Observation and Research Program, MEXT Integrated Program for Next Generation Volcano Research and Human Resource Development, ERI JURP 2016B03, and JSPS KAKENHI Grant Number JP20J10734.
Funding Information:
We thank K. Aizawa and Y. Tajima for their insightful discussions and comments. We thank the Kagoshima Local Meteorological Office, JMA, who provided the monitoring camera data. The aerial photograph used in Fig. 1 was taken from the GSI Tiles of the Geospatial Information Authority of Japan. Constructive comments from two anonymous reviewers and associate editor A. Jolly have greatly improved the manuscript. This work was supported by the MEXT Earthquake and Volcano Hazards Observation and Research Program, MEXT Integrated Program for Next Generation Volcano Research and Human Resource Development, ERI JURP 2016B03, and JSPS KAKENHI Grant Number JP20J10734.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - The Iwo-yama volcano of the Kirishima Volcanic Complex in Japan had a small phreatic eruption in April 2018, which newly formed multiple vents. The activity was recorded by two infrasound sensors and two monitoring cameras, which had been installed within 1 km of the vents. This study identified infrasonic signals from the multiple vents by a cross-correlation analysis between the two infrasound sensors. The analysis successfully revealed the signals from two main eruption craters and constrained the infrasound onsets at the individual vents in the two craters. We combined the infrasound results with the images from the cameras and reconstructed the sequence of the small phreatic eruption of Iwo-yama. At each of the two craters, the intense eruption, which was depicted by the evident infrasound signals, occurred several hours after the eruption onset. This study provides a sequence of the activities of the multiple vents in a phreatic eruption, which will be useful for understanding the phreatic eruption and hazard assessments. [Figure not available: see fulltext.].
AB - The Iwo-yama volcano of the Kirishima Volcanic Complex in Japan had a small phreatic eruption in April 2018, which newly formed multiple vents. The activity was recorded by two infrasound sensors and two monitoring cameras, which had been installed within 1 km of the vents. This study identified infrasonic signals from the multiple vents by a cross-correlation analysis between the two infrasound sensors. The analysis successfully revealed the signals from two main eruption craters and constrained the infrasound onsets at the individual vents in the two craters. We combined the infrasound results with the images from the cameras and reconstructed the sequence of the small phreatic eruption of Iwo-yama. At each of the two craters, the intense eruption, which was depicted by the evident infrasound signals, occurred several hours after the eruption onset. This study provides a sequence of the activities of the multiple vents in a phreatic eruption, which will be useful for understanding the phreatic eruption and hazard assessments. [Figure not available: see fulltext.].
UR - http://www.scopus.com/inward/record.url?scp=85098781840&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85098781840&partnerID=8YFLogxK
U2 - 10.1186/s40623-020-01344-6
DO - 10.1186/s40623-020-01344-6
M3 - Article
AN - SCOPUS:85098781840
SN - 1343-8832
VL - 73
JO - Earth, Planets and Space
JF - Earth, Planets and Space
IS - 1
M1 - 8
ER -