Abstract
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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References
Newmark, N.M.: Effects of earthquakes on dams and embankments. Geotechnique 15(2), 139–160 (1965)
Ling, H.I.: Recent applications of sliding block theory to geotechnical design. Soil Dyn. Earthq. Eng. 21, 189–197 (2001)
Ling, H.I., Cheng, A.H.-D.: Rock sliding induced by seismic force. Int. J. Rock Mech. Min. Sci. 34(6), 1021–1029 (1997)
Jibson, R.W.: Regression models for estimating coseismic landslide displacement. Eng. Geol. 91, 209–218 (2007)
Lin, G.W., Hung, C., Syu, H.S.: Evaluation of an enhanced FS method for finding the initiation time of earthquake-induced landslides. Bull. Eng. Geol. Environ. (2017). doi:10.1007/s10064-017-1083-7
Wilson, R.C., Keefer, D.K.: Dynamic analysis of a slope failure from the 6 August 1979 Coyote Lake, California, earthquake. Bull. Seismol. Soc. Am. 73(3), 863–877 (1983)
Yang, H., Wang, F., Vilimek, V., Araiba, K., Asano, S.: Investigation of rainfall-induced shallow landslides on the northeastern rim of Aso caldera, Japan, in July 2012. Geoenviron. Disasters 2, 20 (2015)
Hung, C., Lin, G.W., Syu, H.S., Chen, C.W., Yen, H.Y.: Analysis of the Aso-bridge landslide during the 2016 Kumamoto earthquakes, Japan. Bull. Eng. Geol. Environ. (2017a). doi:10.1007/s10064-017-1103-7
Hung, C., Syu, H.S., Lin, G.W.: Applying simplified sliding block concepts and finite element codes to analyze the Aso-bridge landslide induced by the 2016 Kumamoto earthquakes. In: Geophysical Research Abstracts, vol. 19, EGU2017-5931 (2017b)
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.
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Hung, C., Hsiung, BC.B., Yang, KH., Ge, L. (2018). Effect of Foreshocks of the 2016 Kumamoto Earthquakes on the Aso-Bridge Slope. In: Chen, R., Zheng, G., Ou, C. (eds) Proceedings of the 2nd International Symposium on Asia Urban GeoEngineering. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-6632-0_39
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DOI: https://doi.org/10.1007/978-981-10-6632-0_39
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