TY - JOUR
T1 - Migration of Very Long Period Seismicity at Aso Volcano, Japan, Associated With the 2016 Kumamoto Earthquake
AU - Hendriyana, Andri
AU - Tsuji, Takeshi
N1 - Funding Information:
We used the F-net and V-net data obtained from the NIED server. Figures were generated by using Generic Mapping Tools (Wessel & Smith,). We gratefully acknowledge the support of I2CNER, sponsored by the World Premier International Research Centre Initiative, MEXT, Japan. We thank M. Haney, P. Jousset, and Associate Editor M. Denolle for a careful review and helpful suggestions. T.T. was supported by the Japan Society for the Promotion of Science (JSPS) through a Grant-in-Aid for Scientific Research on Innovative Areas (JP17H05318). All authors analyzed the data, interpreted the results, and described the manuscript. A.H. mainly performed data analysis. T.T. conceived this study. The authors declare no competing interests. The F-net and V-net data can be downloaded from the NIED server.
Publisher Copyright:
©2019. American Geophysical Union. All Rights Reserved.
PY - 2019/8/16
Y1 - 2019/8/16
N2 - Earthquakes are known to precede volcanic activity, including long-period or very long period (VLP) volcanic seismicity. However, the relationships among earthquakes, VLP seismicity, and volcanic eruptions are not well understood. Here we present the locations of VLP seismicity at Aso volcano, Japan, between January 2015 and December 2016, a period that includes the Mw 7.0 Kumamoto earthquake and phreatomagmatic eruptions. By using a differential-time backprojection method developed in this study to accurately locate VLP events, we clearly identified two distinct VLP clusters. Whereas the eastern cluster was active during eruptions, the western cluster displayed intense VLP seismicity only for a few months after the earthquake. The western cluster may be associated with opening of new fractures during the earthquake. This study explores the mechanisms that can relate earthquake to volcanic activities and provides a new approach to analyze the dynamic behaviors inside volcanoes that may yield useful information for hazard evaluation.
AB - Earthquakes are known to precede volcanic activity, including long-period or very long period (VLP) volcanic seismicity. However, the relationships among earthquakes, VLP seismicity, and volcanic eruptions are not well understood. Here we present the locations of VLP seismicity at Aso volcano, Japan, between January 2015 and December 2016, a period that includes the Mw 7.0 Kumamoto earthquake and phreatomagmatic eruptions. By using a differential-time backprojection method developed in this study to accurately locate VLP events, we clearly identified two distinct VLP clusters. Whereas the eastern cluster was active during eruptions, the western cluster displayed intense VLP seismicity only for a few months after the earthquake. The western cluster may be associated with opening of new fractures during the earthquake. This study explores the mechanisms that can relate earthquake to volcanic activities and provides a new approach to analyze the dynamic behaviors inside volcanoes that may yield useful information for hazard evaluation.
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U2 - 10.1029/2019GL082645
DO - 10.1029/2019GL082645
M3 - Article
AN - SCOPUS:85070962478
SN - 0094-8276
VL - 46
SP - 8763
EP - 8771
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 15
ER -