We estimate nonlinear site response by comparing site response estimates from the 16 August 2005 Mj=7.2 and 26 May 2003 Mj=7.0 Miyagi-Oki earthquakes with site response estimates from aftershocks of the 2003 event. Site response is solved by a spectral inversion technique to separate source, path, and site components. The constraint motion in the inversion is a regional attenuation model derived from fitting the spectra of data recorded at borehole KiK-net stations in the region and a theoretical source spectrum for each event determined using the same borehole stations. Site response is calculated at the surface of the KiK-net and K-NET stations. In general, the average aftershock site response is larger than for the two mainshocks, especially at a higher frequency. When comparing site response with input ground motion level, the predominant frequency and the site response values tend to decrease as the level of input ground motion increases.
Beresnev, I. A., Nonlinearity at California generic soil sites from modeling recent strong-motion data, Bull. Seismol. Soc. Am., 92, 863–870, 2002.
Boatwright, J., Detailed spectral analysis of two small New York State earthquakes, Bull. Seismol. Soc. Am., 68, 1117–1131, 1978.
Bonilla, L. F., R. Archuleta, and D. Lavalèe, Hysteretic and dilatant behavior of cohesionless soils and their effects on nonlinear site response: field data observations and modeling, Bull. Seismol. Soc. Am., 95, 2373–2395, 2005.
Field, E. H., P. A. Johnson, I. A. Beresnev, and Y. Zeng., Nonlinear groundmotion amplification by sediments during the 1994 Northridge earthquake, Nature, 390, 599–602, 1997.
Field, E. H., S. Kramer, A.-W. Elgamal, J. D. Bray, N. Matasovic, P. A. Johnson, C. Cramer, C. Roblee, D. J. Wald, L. F. Bonilla, P. P. Dimitriu, and J. G. Anderson., Nonlinear site response: Where we’re at, Proc. VIIth Int. Symp. Observations Continental Crust through Drilling 69 no. 3, 1998.
Idriss, I. M., Earthquake ground motions at soft soil sites, Special Session in Honor of H. B. Seed, Proc. Second Int. Conf. Recent Adv. Geotechnol. Earthq. Eng. Soil Dyn., St. Louis, 1991.
Kamae, K., K. Irikura, and Y. Fukuchi, Prediction of strong ground motion for M7 earthquake using regional scaling relations of source parameters, J. Struct. Cnstr. Eng., AIJ, 416, 57–70, 1991 (in Japanese with English abstract).
Midorikawa, S., Nonlinearity of site amplification during strong ground shaking, Zishin, 46, 207–216, 1993 (in Japanese with English abstract).
Satoh, T., Short-period spectral level of intraplate and interplate earthquakes occurring off Myagi prefecture, J. JAEE, 4, 1–4, 2004a (in Japanese with English abstracts).
Satoh, T., Study on causes of large peak accelerations of the 2003 Miyagiken-oki earthquake based on strong ground motion records, J. Struct. Cnstr. Eng., AIJ, 581, 31–38, 2004b (in Japanese with English abstract).
Satoh, T., Influence of fault mechanism, depth, and region on stress drops of small and moderate earthquakes in Japan, Struct. Eng./Earthq. Eng., JSCE, 200, 2005 (accepted for publication).
Satoh, T. and Y. Tatsumi., Source, path, and site effects for crustal and subduction earthquakesinferred from strong motion records in Japan, J. Struct. Constr. Eng., AIJ, 556, 15–24, 2002 (in Japanese with English abstract).
Tsuda, K., R. Archuleta, and K. Koketsu, Quantifying spatial distribution of site response by use of the Yokohama High-Density Strong Motion Network, Bull. Seismol. Soc. Am., 96, 926–942, 2006a.
Tsuda, K., R. Archuleta, J. Steidl, and D. Assimaki, Site response estimation for 2003 Miyagi-Oki earthquake sequence considering nonlinear site response, Bull. Seismol. Soc. Am., 96, 1474–1482, 2006b (submitted).
Yamanaka, Y., August 16, Miyagi-oki earthquake (Mj=7.2), EIC Seismological Notes, 168, (http://wwweic.eri.u-tokyo.ac.jp/sanchu/SeismoNote/2005/EIC168.html), 2005 (in Japanese).
Yamanaka, Y. and M. Kikuchi., May 26, Miyagi-oki earthquake (Mj=7.0), EIC Seismological Notes, 135, (http://wwweic.eri.u-tokyo.ac.jp/sanchu/SeismoNote/2005/EIC168.html), 2003 (in Japanese).
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Tsuda, K., Steidl, J. Nonlinear site response from the 2003 and 2005 Miyagi-Oki earthquakes. Earth Planet Sp 58, 1593–1597 (2006). https://doi.org/10.1186/BF03352667
- Nonlinear site response
- ground motion level
- 2003 and 2005 Miyagi-Oki earthquakes