the crisis management of flood in isfahan using atmospheric system

Authors

امیر گندمکار

استادیار دانشگاه آزاد اسلامی واحد نجف آباد

abstract

heavy rains are one of the features of arid and semi arid climates which result in flood. this kind of rainfall originates from environmental and synoptic conditions. mediterranean cyclones are the major factor in heavy rainfall in iran, but these cyclones do not happen in some parts of iran such as southern and southeastern areas. in this study, it has been tried to pinpoint the synoptic reasons of heavy rainfall in isfahan through the analysis of the relationship between this rainfall in isfahan and atmospheric system over iran and the areas around it. the findings of this study show that the major factor is the arrival of sudanese low pressure system in this region from the southwest, of course if the ascent local conditions such as heat occur, the heaviest rains happen in isfahan. in fact, this kind of rainfall in isfahan has a sudanese origin and if it is accompanied by mediterranean system, heavier rain falls.

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Journal title:

تحقیقات جغرافیایی

جلد ۲۷، شماره ۱۰۵، صفحات ۱۱۵-۱۲۸

Keywords

heavy rains are one of the features of arid and semi arid climates which result in flood. this kind of rainfall originates from environmental and synoptic conditions. mediterranean cyclones are the major factor in heavy rainfall in iran but these cyclones do not happen in some parts of iran such as southern and southeastern areas. in this study it has been tried to pinpoint the synoptic reasons of heavy rainfall in isfahan through the analysis of the relationship between this rainfall in isfahan and atmospheric system over iran and the areas around it. the findings of this study show that the major factor is the arrival of sudanese low pressure system in this region from the southwest of course if the ascent local conditions such as heat occur the heaviest rains happen in isfahan. in fact this kind of rainfall in isfahan has a sudanese origin and if it is accompanied by mediterranean system heavier rain falls.

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