Oral

The title of conference
International Conference on Humanities, Geography and Economics (ICHGE'2011
Dec. 17-18,2011, Pattaya, Thailand

 

The title of paper



Seasonal Trend Analysis of Precipitation and Discharge Parameters in Guilan
North of the Iran

 

   Abstract

Rainfall and discharge changes in the Ghaleroudkhan river catchment have been analyzed for the past 38 years by applying the Mann-Kendall trend test. The purpose of this paper is to inform on the type and time of discharge fluctuations in relation to rainfall. Seasonal rainfall and discharge trends of 2 stations have been calculated. These results reveal that data series have trend and abrupt change. There are the same fluctuations between rainfall and discharge parameters for all seasons. The discharge diagrams presents descending trend in all of the seasons, especially in winter and spring. But, the rainfall has ascending trend for only the autumn and non trend in summer. Generally, discharge trend follows closely rainfall fluctuations.

keywords: discharge, Man-Kendal, rainfall, trend.