the possibility of seismic intensity equal to or larger than 6 Lower, within 30 years from the present is studied meticulously (Earthquake Research Committee).
Northern Japan Region
Areas with a high probability of hazard are noted on the Pacific coast of Hokkaido, the Pacific coast of Miyagi Prefecture, and the Pacific coast of Fukushima Prefecture, Yamagata Basin and the Hachiro-gata region of Akita Prefecture. Also, areas with fairly high probabilities extend across the inland areas and to the Japan Sea side. Sapporo City (Hokkaido) has a fairly high possibility of shaking equal to or larger than seismic intensity 6 Lower, within 30 years from the present; the influence is highest from the characteristic earthquakes of the 98 major active fault zones. This is caused by the Ishikari-teichi-toen fault zone which has a high occurrence probability.
These areas are largely influenced by earthquakes along the Nankai Trough, which have been evaluated with a high probability for the entire area of Shizuoka and Aichi Prefectures. Areas with high probability extend over the whole of Kanto Plain, where the Tokyo Metropolis, the prefectures of Kanagawa, Saitama and Chiba, and the southern part of Ibaraki Prefecture are located. Seismic Hazards of Japan and Indonesia.
Bibliography1. Algermissen, S. T. Seismic risk, AccessScience@McGraw-Hill, http://www.accessscience.com 2. Cornell, C.A. Engineering seismic risk analysis. "Bulletin of the Seismological Society of America", 1968: 3. Field, E. H. Probabilistic Seismic Hazard Analysis (PSHA) A Primer, http://www.relm.org/tutorial_materials, 4. Wang, Z. A Clear Definition of Seismic Hazard and Risk: A Basis for Hazard and Risk Assessment, Communication, and Management. American Geophysical Union, 2005. 5. Petersen, M. Harmsen, S. Mueller, C. Haller, K. Dewey, J. Luco, N. Crone, A. Lidke, D. and Rukstales, K. Documentation for the Southeast Asia Seismic Hazard Maps. Virginia: U.S. Geological Survey, 2007. 6. National Seismic Hazard Maps for Japan (2005). Headquarters for Earthquake Research Promotion, 2005. 7. Kuntjor, I. and A. Jamil. S.Triple Trouble in Indonesia: Strengthening Jakarta’s Disaster Preparedness. NTU. 2010. 8. The Fundamental Plans for Survey and Observation. Headquarters for Earthquake Research Promotion, 1997. 9. Ikeda,Y., Imaizumi, T., Togo, M., Hirakawa, K., Miyauchi, T. and Sato, H. Atlas of Quaternary Thrust Faults in Japan. University of Tokyo Press, 2002.
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