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http://dx.doi.org/10.7843/kgs.2018.34.8.51

Response Characteristics of Site-specific using Aftershock Event  

Ahn, Jae-Kwang (Earthquake and Volcano Research Division, KMA.)
Cho, Seongheum (Earthquake and Volcano Research Division, KMA.)
Jeon, Young-Soo (Earthquake and Volcano Research Division, KMA.)
Lee, Duk Kee (Earthquake and Volcano Research Division, KMA.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.8, 2018 , pp. 51-64 More about this Journal
Abstract
Korean peninsula is known to be far from the plate boundary and not to generate large-scale earthquakes. However, earthquakes recently occurred in Gyeongju (2016/09/12, $M_L=5.8$) and Pohang (2017/11/15, $M_L=5.4$). The interest in earthquake engineering has increased, and various studies are actively underway by recently events. However, the seismic station network in Korea is less dense than that of the western U.S., resulting in the lack of data for detailed analyses of earthquakes. Therefore, KMA (Korea Meteorological Administration) set up temporary seismic stations and recorded ground motions from aftershocks. In this study, characteristics of Pohang seismic propagation and generation of bedrock motion are analyzed through the aftershock ground motion records at both permanent and temporary stations, as well as through the collected geological structure and site information. As a result, the response at Mangcheon-Li shows evidences of basin effects from both geology structures and measured aftershock motions.
Keywords
Pohang earthquake; Pohang Basin; Basin effect; Aftershock; Matched motion;
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  • Reference
1 Al Atik, L. and Abrahamson, N. (2010), "An Improved Method for Nonstationary Spectral Matching", Earthquake Spectra, Vol.26, No.3, pp.601-617.   DOI
2 Brinkman, B.A., LeBlanc, M., Ben-Zion, Y., Uhl, J.T., and Dahmen, K.A. (2015), "Probing Failure Susceptibilities of Earthquake Faults using Small-quake Tidal Correlations", Nature communications, Vol.6, pp.6157.   DOI
3 Cheon, Y., Son, M., Song, C.W., Kim, J.S., and Sohn, Y.K. (2012), "Geometry and Kinematics of the Ocheon Fault System along the Boundary between the Miocene Pohang and Janggi Basins, SE Korea, and its Tectonic Implications", Geosciences Journal, Vol. 16, No.3, pp.253-273.   DOI
4 Choi, Y., Stewart, J.P., and Graves, R.W. (2005), "Empirical Model for Basin Effects Accounts for Basin Depth and Source Location", Bulletin of the seismological Society of America, Vol.95, No.4, pp.1412-1427.   DOI
5 Darendeli, M.B. (2001), Development of a new family of normalized modulus reduction and material damping curves, Ph.D. thesis, University of Texas at Austin,, pp.131-153 (chapter 6).
6 Delorey, A.A., van der Elst, N.J., and Johnson, P.A. (2017), "Tidal Triggering of Earthquakes Suggests Poroelastic behavior on the San Andreas Fault", Earth and Planetary Science Letters, Vol. 460, pp.164-170.   DOI
7 Eem, S.H., Yang, B., and Jeon, H. (2018), "Earthquake Damage Assessment of Building using Opendata in the Pohang and Gyeongju Earthquakes", EESK J Earthquake Eng., Vol.22, No.3, pp.121-128.
8 Furumura, M., Sasatani, T., and Furumura, T. (1997), "Generation of Basin-Induced Surface Waves Observed in the Tokachi Basin, Hokkaido, Japan", Journal of Physics of the Earth, Vol.45, No. 4, pp.287-305.   DOI
9 Hashash, Y., Musgrove, M., Harmon, J., Groholski, D., Phillips, C., and Park, D. (2015), "Deepsoil 6.0", User Manual.
10 Hashash, Y., Phillips, C., and Groholski, D.R. (2010), "Recent Advances in Non-linear Site Response Analysis", Proc., 5th Int. Conf. on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics, Univ. of Missouri-Rolla, Rolla, MO.
11 Hashash, Y.M. and Park, D. (2001), "Non-linear One-dimensional Seismic Ground Motion Propagation in the Mississippi Embayment", Engineering Geology, Vol.62, No.1-3, pp.185-206.   DOI
12 Hwang, K.R. and Lee, H.S. (2018), "Seismic Damage to RC Lowrise Building Structures Having Irregularities at the Ground Stroy during the 15 November 2017 Pohang, Korea, Earthquake", EESK J Earthquake Eng., Vol.22, No.3, pp.103-111.
13 Kim, T., Chu, Y., Kim, S.R., and Bhandari, D. (2018), "Seismic behavior of Domestic Piloti-type Building Damaged by 2017 Pohang Earthquake", EESK J Earthquake Eng., Vol.22, No.3, pp.161-168.
14 Kwak, D.Y., Stewart, J.P., Mandokhail, S.u.J., and Park, D. (2017), "Supplementing VS 30 with H/V Spectral Ratios for Predicting Site Effects", Bulletin of the seismological Society of America, Vol.107, No.5, pp.2028-2042.   DOI
15 Mendoza, C. and Hartzell, S.H. (1988), "Aftershock Patterns and Main Shock Faulting", Bulletin of the seismological Society of America, Vol.78, No.4, pp.1438-1449.
16 Park, J.Y., Kim, J.M., and Yoon, S.H. (2015), "Three-dimensional Geologic Modeling of the Pohang Basin in Korea for Geologic Storage of Carbon Dioxide", Journal of the Geological Society of Korea, Vol.51, No.3, pp.289-302.   DOI
17 Wells, D.L. and Coppersmith, K.J. (1994), "New Empirical Relationships among Magnitude, Rupture Length, Rupture Width, Rupture Area, and Surface Displacement", Bulletin of the seismological Society of America, Vol.84, No.4, pp.974-1002.
18 Ministry of the Interior and Safety (2018), "Pohang Earthquake Response Overall Assesment Conference", Feb 7.
19 Sohn, Y.K. and Son, M. (2004), "Synrift Stratigraphic Geometry in a Transfer Zone Coarse-grained Delta Complex, Miocene Pohang Basin, SE Korea", Sedimentology, Vol.51, No.6, pp.1387-1408.   DOI