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Paper Information

Journal:   WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)   SUMMER 2012 , Volume 22 , Number 2; Page(s) 173 To 190.
 
Paper: 

INVESTIGATING WATER TABLE DEPTH FLUCTUATIONS IN THE MALAYER PLAIN

 
 
Author(s):  ZARE ABIANEH H.*, BAYAT VARKESHI M., MAROUFI S.
 
* DEPT. OF IRRIG ENGIN., FACULTY OF AGRIC., BU-ALI SINA UNIV., HAMEDAN, IRAN
 
Abstract: 

Modeling of water table depth fluctuations because of uncertainty in its parameters is rather complicated and was studied in the current work. For this purpose temporal variability of water table depth at 22 piezometric wells and precipitation data at 3 rainfall stations in the Malayer plain were evaluated from 1989 to 2007. Trends in data series of monthly, seasonally and annually with Sen's estimator nonparametric method was calculated and interpreted based on the defined constraints and trend start time by using Mann-Kendall test. The results showed that at monthly time scale 79.5% of the wells had significant positive slope. The remaining 16.3% had positive and 4.2% negative slope. At seasonal time scale 80.7% of trends had significant positive slope; 14.8% of the rest encountered with positive and the remaining 4.5% with negative slopes. At the annual time scale, analysis indicated that the trend in 81.8% of the wells was significant with positive slope. The trend in 13.6% was non-significant with positive slope and the 4.6% was negative. Over ally, the trends of piezometerc wells showed rapid decreasing in the water table depth at the sudied area and presenting unwise utilization of the ground water resources in the area.

 
Keyword(s): MALAYER PLAIN, MANN-KENDALL, SEN' S ESTIMATOR, WATER TABLE DEPTH
 
References: 
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