TY - GEN
T1 - Development and assessment of real-time fault model estimation routines in the GEONET real-time processing system
AU - Kawamoto, Satoshi
AU - Miyagawa, Kohei
AU - Yahagi, Toshihiro
AU - Todoriki, Masaru
AU - Nishimura, Takuya
AU - Ohta, Yusaku
AU - Hino, Ryota
AU - Miura, Satoshi
N1 - Publisher Copyright:
© Springer International Publishing Switzerland 2015.
PY - 2017
Y1 - 2017
N2 - The recent development of Global Navigation Satellite Systems (GNSS) and communication infrastructure provides real-time displacement data, enabling the real-time estimation of coseismic fault models for large earthquakes and the potential improvement of tsunami warning systems. In this paper, we present two real-time coseismic fault model estimation procedures implemented in the GEONET real-time processing system: a single rectangular fault model and a slip distribution model on the subducting plate interface. We evaluate the fault modeling procedures for two past large interplate earthquakes: the 2003 Tokachioki earthquake and the 2011 Tohoku earthquake. Furthermore, we also evaluate a potential large interplate earthquake along the Nankai trough based on simulated GPS time series. We obtained reasonable coseismic simple rectangular fault models for the past two large earthquakes. In contrast, the simulated interplate event along the Nankai trough clearly indicates the great advantage of estimation of the coseismic slip distribution on the plate interface. These results clearly show that reliable estimation of the coseismic fault model and/or slip distribution on the subducting plate interface will be possible in Japan based on the real-time GNSS data. This result will contribute to a more reliable tsunami early warning system.
AB - The recent development of Global Navigation Satellite Systems (GNSS) and communication infrastructure provides real-time displacement data, enabling the real-time estimation of coseismic fault models for large earthquakes and the potential improvement of tsunami warning systems. In this paper, we present two real-time coseismic fault model estimation procedures implemented in the GEONET real-time processing system: a single rectangular fault model and a slip distribution model on the subducting plate interface. We evaluate the fault modeling procedures for two past large interplate earthquakes: the 2003 Tokachioki earthquake and the 2011 Tohoku earthquake. Furthermore, we also evaluate a potential large interplate earthquake along the Nankai trough based on simulated GPS time series. We obtained reasonable coseismic simple rectangular fault models for the past two large earthquakes. In contrast, the simulated interplate event along the Nankai trough clearly indicates the great advantage of estimation of the coseismic slip distribution on the plate interface. These results clearly show that reliable estimation of the coseismic fault model and/or slip distribution on the subducting plate interface will be possible in Japan based on the real-time GNSS data. This result will contribute to a more reliable tsunami early warning system.
KW - Earthquake early warning
KW - Fault model inversion
KW - GNSS
KW - GPS
KW - Real-time kinematic (RTK) positioning
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U2 - 10.1007/1345_2015_49
DO - 10.1007/1345_2015_49
M3 - Conference contribution
AN - SCOPUS:85009729320
SN - 9783319397672
T3 - International Association of Geodesy Symposia
SP - 89
EP - 96
BT - International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH) - Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH)
A2 - Hashimoto, Manabu
PB - Springer Verlag
T2 - Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards, GENAH 2014
Y2 - 22 July 2014 through 26 July 2014
ER -