Scientific- Research Quarterly of Geographical Data (SEPEHR)

Scientific- Research Quarterly of Geographical Data (SEPEHR)

Evaluation and Analysis of the Curves of Intensity, Duration and Frequency of Rainfalls in Garmsar Using IDF Method

Document Type : Research Paper

Authors
Omid Binesh 1
Ali Panahi 2
1 Master of Climatology
2 Member of Faculty, Department of Geography, Azad Islamic University of Tabriz
Abstract
Iran is located in the belt of dry and semi-arid regions of the world. Due to its geographical situation, it has severe rainfall fluctuations, especially in arid areas. It is necessary to study this behavior for drainage basin operation, flood estimation for design and ... In this research, the IDF method has been used to study the intensity-duration-frequency of precipitation, which shows the intensity of precipitation in a desired period of time with a specified return period, and it can be used to estimate the flow rate according to intensity of precipitation.
Garmsar is also located in a hot, dry climatic zone. The recognition of precipitation regime as well as the intensity of showery and exceptional rainfall can be useful for future planning. By examining the IDF curves, it was found that the highest rainfall has been in April, March and May, and the lowest rainfall in September, August and June, respectively.
Keywords
intensity- duration- frequency curve (IDF)
Precipitation
Garmsaar
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Scientific- Research Quarterly of Geographical Data (SEPEHR)
Volume 19, Issue 73
Spring 2010
Pages 60-63