Historical Seismograms - Evidence from the AD 2000 Izu Islands ...

On the Seismicity oj the Middle East 333This relation gives a mean return period of 25 years for events of magnitudeM, 2 7.0 in the considered time period.The distribution of the number of earthquakes per year (Figure 7) in the MiddleEast shows no significant temporal behavior. The increased number of earthquakesafter 1960 is probably because of the increased capability and number of recordingstations all over the world.ACKNOWLEDGEMENTSThe authors would like to acknowledge the assistance provided by Wilbur Rinehart,Mark Rockwell, Ron Smith, Jerry Coffman, and Susan Godeaux. This studywas carried out while one of the authors (S.R.) was a visiting scientist at CIRES,University of Colorado, under Fulbright Grant #225.REFERENCESAivazov, I. V. (1961). Zavisimost Mezhdu Ballnostyu, Intensivnostyu I Glubiny OchagaDlya Kaukaskikh Zemletryaseniv (The Relationship Between Magnitude, Intensity,and Focal Depth of Caucasian Earthquakes), Soobshch. Acad. Sci. GSSR, 26(2),149-152.Ambraseys, N. N. (1978). Middle East - a reappraisal of seismicity, GSL Quart. J. Engin.Geol., 2, 19-32.Ambraseys, N. N. and C. P. Melville (1982). A History of Persian Earthquakes, CambridgeUniversity Press, Cambridge, U.K., 219 pp.Ambraseys, N. N. and C. P. Melville (1983). Seismicity of Yemen, Nature, 303, 321-323.Barazangi, M. and B. Rouhban (1983). Evaluating and reducing earthquake risk in Arabcountries, Nature and Resources, 19(4), 2-6.Bath, M. (1978). Introduction to Seismo[ogy, Halstead Press.Ben-Menahem, A. (1979). Earthquake catalogue for the Middle East (92 B.C. - 1980A.D.), Boll. Geofis. Teorica Appl., 21(84), 313 pp.Brazee, R. J. (1976). Final Report: An Analysis of Earthquake Intensities with Respectto Attenuation, Magnitude, and Rate of Recurrence, Revised Edition, NUREG/CR-1805, NOAA Tech. Memorandum EDS NGSDC-2, NOAA/National GeophysicalData Center, Boulder, CO, 105 pp.Chiburis, E. F. (1981). Seismicity Recurrence Rates and Regionalizations of the NortheasternUnited States and Adjacent Southeastern Canada, New England SeismotectonicStudy, (Patrick J. Barosh, Coordinator), Weston Observatory, Boston College,Weston, MA, 76 pp.Flinn, E. A. and E. R. Engdahl (1965). A propcsed basis for geographical and seismicregionalization, Rev. Geophys., 3, 123-149.Ganse, R. A. and J. B. Nelson (1981). Catalog of Significant Earthquakes 2000 B.C. -1979, Report SE-27, World Data Center-A for Solid Earlh Geophysics, U.S. Dept. ofCommerce, Boulder, CO, 154 pp.Gutenberg, B. and C. F. Richter (1942). Earthquake magnitude, intensity, energy, andacceleration, Bull. Seism. SOC. Am., 32, 163-191.Gutenberg, B. and C. F. Richter (1954). Seismicity of the Earth and Associated Phenomena,Princeton University Press, second ed.; facsimile of 1954 ed. published in 1965 byHafner Publishing Co., N.Y., 310 pp.Gutenberg, B. and C. F. Richter (1956). Magnitude and energy of earthquakes, Annali diGeo~isica, 9, 1-15.KQrnik, V. (1969). Seismicity of the European Area, Part 1, D. Reidel Publishing Co.,Dordrecht, The Netherlands.Miyamura, S. (1962). Magnitude-frequency relation and its bearing to geotectonics, Proc.Japan Acad., 58, 27-30.