Rate of seismicity of the dead sea region over the past 4000 years |
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| Authors: | Ari Ben-Menahem Ezra Aboodi Moshe Vered Robert L Kovach |
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| Institution: | 1. Adolpho Bloch Geophysical Observatory, Department of Applied Mathematics, The Weizmann Institute of Science, Rehovot Israel;2. Israel Atomic Energy Commission, Licensing Division, Tel Aviv Israel;3. Department of Geophysics, Stanford University, Stanford, Calif. 94305 U.S.A. |
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| Abstract: | The results of two millennia of earthquake documentation, a few decades of macroseismic and instrumental routine seismological observations and five months of microearthquake monitoring, are used to estimate the rate of seismic activity of the Dead Sea fault. It is found that these vastly diverse data which combine long- and short-term tectonic processes, are in good accord with the formula: where N is the annual number of events of local magnitude ML or greater. If this equation is extrapolated to ca. 2000 B.C., it yields a Richter magnitude Ms = 7 for the event of Sodom and Gomorrah which is believed to be associated with the strongest earthquake in the region during historical times.Comparing our findings with the results of other investigators in Turkey, Greece, Aegean Sea and Iran, we note that the b values along the Syrian-African rift zone (0.78–0.86) are smaller than those in Greece and its surrounding seas (0.94–1.16). |
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