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A Test Case of Historical Seismicity: Isfahan and Chahar Mahal, Iran

N. N. Ambraseys
The Geographical Journal
Vol. 145, No. 1 (Mar., 1979), pp. 56-71
Published by: geographicalj
DOI: 10.2307/633075
Stable URL: http://www.jstor.org/stable/633075
Page Count: 17
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A Test Case of Historical Seismicity: Isfahan and Chahar Mahal, Iran
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Abstract

To reduce earthquake losses in regions of little-known seismicity it is necessary to determine in advance what is an acceptable risk. To do this a critical evaluation of all existing seismological, tectonic and historical data should be made and should include confirmation by field study of the epicentral regions of the larger earthquakes. To demonstrate the effectiveness of such a multi-disciplinary approach for the assessment of earthquake risk we have taken as an example the fast-developing area of Isfahan and its adjacent district of Chahar Mahal, a region of little-known seismicity. This study shows that, contrary to what has been written in recent times, the city of Isfahan was never destroyed by earthquakes and the adjacent district of Chahar Mahal is more seismically active than was believed to be the case.

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