TY - GEN
T1 - Effect of Foreshocks of the 2016 Kumamoto Earthquakes on the Aso-Bridge Slope
AU - Hung, C.
AU - Hsiung, B. C.B.
AU - Yang, K. H.
AU - Ge, L.
N1 - Funding Information:
Acknowledgements. This work was supported, in part, by funding from the Ministry of Science and Technology, Taiwan. The authors appreciate the assistance in providing data by the National Research Institute for Earth Science and Disaster Resilience of Japan, the Geospatial Information Authority of Japan, the Geographical Survey Institute of Japan, and the Ministry of Home Affairs, Japan.
Publisher Copyright:
© 2018, Springer Nature Singapore Pte Ltd. and Zhejiang University Press.
PY - 2018
Y1 - 2018
N2 - This paper presents an examination the Aso-bridge slope subjected to the foreshocks of the 2016 Kumamoto earthquakes. While the Aso-bridge slope was marginal stable in the absence of earthquake, it remained stable during the foreshocks that struck on April 14 and 15 2016, with magnitudes of 6.5 and 6.4 Mw, respectively. To validate that the slope did not fail during the foreshocks and the applicability of an enhanced FS method capable of determining the initiation time of co-seismic landslides, relationships between the Aso-bridge slope and the nearest recorded seismic signals, including the main-shock and the foreshocks, were investigated. It was found that the two foreshocks, having PGAs of 43.0 and 129.7 gal, were not strong enough to cause failure of the slope. They were not strong enough mainly because of the smaller magnitude as compared to the main-shock of 7.0 Mw with a PGA of 508.9 gal, leading to a significant difference in the PGAs. The study demonstrates that the enhanced FS method can be one efficient and practical alternative for determining large-scale co-seismic landslides.
AB - This paper presents an examination the Aso-bridge slope subjected to the foreshocks of the 2016 Kumamoto earthquakes. While the Aso-bridge slope was marginal stable in the absence of earthquake, it remained stable during the foreshocks that struck on April 14 and 15 2016, with magnitudes of 6.5 and 6.4 Mw, respectively. To validate that the slope did not fail during the foreshocks and the applicability of an enhanced FS method capable of determining the initiation time of co-seismic landslides, relationships between the Aso-bridge slope and the nearest recorded seismic signals, including the main-shock and the foreshocks, were investigated. It was found that the two foreshocks, having PGAs of 43.0 and 129.7 gal, were not strong enough to cause failure of the slope. They were not strong enough mainly because of the smaller magnitude as compared to the main-shock of 7.0 Mw with a PGA of 508.9 gal, leading to a significant difference in the PGAs. The study demonstrates that the enhanced FS method can be one efficient and practical alternative for determining large-scale co-seismic landslides.
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U2 - 10.1007/978-981-10-6632-0_39
DO - 10.1007/978-981-10-6632-0_39
M3 - Conference contribution
AN - SCOPUS:85034235553
SN - 9783319563961
SN - 9783319996691
SN - 9783642196294
SN - 9789400714205
SN - 9789811066313
SN - 9789811075599
T3 - Springer Series in Geomechanics and Geoengineering
SP - 511
EP - 517
BT - Springer Series in Geomechanics and Geoengineering
A2 - Chen, Renpeng
A2 - Zheng, Gang
A2 - Ou, Changyu
PB - Springer Verlag
T2 - 2nd International Symposium on Asia Urban GeoEngineering, 2017
Y2 - 24 November 2017 through 27 November 2017
ER -