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Abstract of the Article

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identification of Influnce Factors in Hydrological Drought using Factor Analysis (Case Study in Daryacheh - e - Namak Basin of Iran)

Authors:
[ Ali Akbar Mossavi ] - Specialists of the Research Center of Jihad Sazandegi of Markazi Province and MSC Students of Watershed Management, TEHRAN University - 1999
[ Ali Akhar Davoudi-Rad ] -

Abstract:

Iran is located in a desert belt of the earth and each year, Iran suffers from drought and wetness. Generally, drought, which is regarding conditions the which amount the water for economical activitices is less than the amount it in the previous years. Drought is divided to hydrological drought (Low flow) , climatological drought and agricultural drought. In other words, hydrological drought comprises the periods that the amount of water of rivers is less than critical value. To determine the hydrological drought management, it is essential to demonstrate the influence factors. In this paper, after assigning morphometric parameter's (area, perimeter, form factor, drainage density ,...) climatic parameters (mean rainfall, mean temperature , ...) and geologic parameters. (Previous and imprevious, formation percentage subwatershed of Daryachehe - Namak basin) , we applied factor analysis and demonstrated the most important factor on hydrological drought, then discussed about their management.

Keywords:

hydrological drought - low flow - climatological drought - factor analysis agricultural drought.