1. 1) Seo, K., Midorikawa, S., Mitani, Y. and Shang, S.: Deep Subsurface Ground Structure of the South-western Kanto District, Proc. 6th Japan Earthq. Engrng. Symp., pp. 49-56, 1982.
2. 2) Kasuga, S. and Irikura, K.: Lateral Variations of Ground Motions on Surface Layers with a Horizontal Discontinuity, Proc. 6th Japan Earthq. Engrng. Symp., pp. 65-72, 1982.
3. 3) Kinoshita, S., Itoh, K., Mikoshiba, T. and Suzuki, H.: Observation of Earthqake Response of Thick Sedimentary Layers, Proc. 6th Japan Earthq. Engrng. Symp., pp. 169-176, 1982.
4. 4) Shibuya, J. and Shiga, T.: A Ground Structre Model in Sendai Obtained from Underground Observations of Earthquake Motions, Proc. 6th Japan Earthq. Engrng. Symp., pp. 177-184, 1982.
5. 5) Ohsaki, Y., Watabe, M., Tohdo, M. and Ohkawa, I.: Characteristics of Surface Ground Motions Considering the Various Property Combinations of Subsoils and Earthquakes, 6th Japan Earthq. Engrng. Symp., pp. 457-464, 1982.