The role of hydrology study and atmospheric circulation patterns related to heavy rainfall and flood forming potential of water basins case study: Gorganroud water basin in Golestan Province Iran

Shakoor A., . and Rowshan G.R., . and Hejazizadeh Z., . (2008) The role of hydrology study and atmospheric circulation patterns related to heavy rainfall and flood forming potential of water basins case study: Gorganroud water basin in Golestan Province Iran. [Proceedings Paper]

Environment exploitation has undergone a more rapid rate in recent years in Iran. Internationally recognized Golestan forests are among the most endangered features threatened by anthropogenic activities. Being located in north-west of Iran south-east of Caspian Sea Gorganroud watershed is mostly influenced by deforestation activities. Destructive floods in Northern Khorasan and Golestan provinces in August 2005 are considered as major consequences of recent exploitation in internationally preserved zone of Golestan national park. In this study the identification of regional atmospheric and hydrologic patterns and their role in conforming floods in Gorganroud water basin are discussed. Accordingly Gorgan station is considered for climatic data collection. This station is located in south-east of Caspian Sea and in 540 16; east longitude and 360 51; north latitude. A 33-year period between 1970-2003 was taken in to consideration in the process of data gathering. Gradual change from Mediterranean to Semi-arid climate during recent decades in Gorganroud watershed indicates regional climate change. Increased share of 24-hour precipitation in average annual precipitation in one hand and decreasing rate of snowy on rainy days ratio on the other hand stipulate this climate change. The relatively sharp ascending pattern of annual peak flow of the basin during recent years may be considered as an alarming factor concerning streams inundation. Climate study in suspected water basins may provide invaluable data concerning flood forming potential of regional precipitations. The results of this study confirm the fact that precise analysis of climatic and hydrologic in watersheds threatened by flood-forming run-offs may be used efficiently in monitoring such areas and saving human lives. Paying more attention to gathered information in this study could have saved hundreds of people;s lives.

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Abstract

Environment exploitation has undergone a more rapid rate in recent years in Iran. Internationally recognized Golestan forests are among the most endangered features threatened by anthropogenic activities. Being located in north-west of Iran south-east of Caspian Sea Gorganroud watershed is mostly influenced by deforestation activities. Destructive floods in Northern Khorasan and Golestan provinces in August 2005 are considered as major consequences of recent exploitation in internationally preserved zone of Golestan national park. In this study the identification of regional atmospheric and hydrologic patterns and their role in conforming floods in Gorganroud water basin are discussed. Accordingly Gorgan station is considered for climatic data collection. This station is located in south-east of Caspian Sea and in 540 16; east longitude and 360 51; north latitude. A 33-year period between 1970-2003 was taken in to consideration in the process of data gathering. Gradual change from Mediterranean to Semi-arid climate during recent decades in Gorganroud watershed indicates regional climate change. Increased share of 24-hour precipitation in average annual precipitation in one hand and decreasing rate of snowy on rainy days ratio on the other hand stipulate this climate change. The relatively sharp ascending pattern of annual peak flow of the basin during recent years may be considered as an alarming factor concerning streams inundation. Climate study in suspected water basins may provide invaluable data concerning flood forming potential of regional precipitations. The results of this study confirm the fact that precise analysis of climatic and hydrologic in watersheds threatened by flood-forming run-offs may be used efficiently in monitoring such areas and saving human lives. Paying more attention to gathered information in this study could have saved hundreds of people;s lives.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. GE90 M3I61 2008 Call Number
AGROVOC Term:	Climate change
AGROVOC Term:	Watersheds
AGROVOC Term:	Precipitation
AGROVOC Term:	Environment
AGROVOC Term:	Groundwater basin
AGROVOC Term:	Rainfall
AGROVOC Term:	Floods rising water
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11748

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