سال انتشار: ۱۳۸۳
محل انتشار: کنفرانس بین المللی زلزله (یادواره فاجعه بم)
تعداد صفحات: ۵
Nikolai N.Shatogin – Moscow state university Department geology and geochemistry ore deposits
Mehdi Iranmanesh – Moscow state university Department geology and geochemistry ore deposits
Each day, at least two large natural disasters take place on the affecting the lives of people. There are now about 450 cities worldwide with a population of more then 1 million inhabitants. Of these, 50 cities have a population greater than 3.5 million and 25 cities have populations greater than 8 million. Some sobering statistics underscore the physical and financial risk of disaster to mega cities in the developing world: about 50 percent of the worlds largest cities are situated along major earthquake belts or tropical cyclone tracks: and the average number of victims is 150 times larger during disasters than in the developed woeld. Cities like Istanbul, Dhaka, Manila, Cairo, Mexico city Katmandu, Bogota, Algiers, Tehran and many others are threatened by earthquakes. An earthquake in these cities would cause a catastrophe of unheard proportions.