Spatial Variation Investigate of the Ground Water Quality and Quantity in the Moseian Plain, Ilam

Valiyan, Akbar (2015) Spatial Variation Investigate of the Ground Water Quality and Quantity in the Moseian Plain, Ilam. Masters thesis, University of Zabol.

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The optimal management of water resources and Keeping their quality, within the standard criteria, need the basic information about the range of chemical elements and their coordinate information in a specific geographical location. The appropriate zooning on the sufficiency of the statistical data as well as their local condition; which is an important step for the better management of water resources. This research investigates the spatial and temporal distribution of groundwater quality and quantity of Mosian plains through 11 years periods, using geostatistical techniques. After the evolution of best resources, data were evaluated for restoration purposes according to their accuracy and distribution; because it was observed that the data do not fit to normal distribution based on Kolmogorov-Smirnov test, therefore the logarithm of the data were used. then the spherical variogram model had the best fit to the spatial distribution of the depth and all over of the quality parameters ( TDS, EC, CL and pH) using the GS+ software. results showed that the best semi- variogram model is the exponential and spherical model to fit all data such as the depth and the quality parameters, it has to be mentioned that according to RMSE, ME and ASE using cross validation technic, the co-kriging was chosen as the best interpolation method among kriging, co-kriging and IDW. It was also found that there is a strong correlation between EC and TDS and their decreasing trend within the study period along the Mosian plain. Assessment of the 11 years of the water table showed 2/44 meter decline related to the qualification data. The spatial quality map shows a decrease along the west-east south-southeast paths. In other word, the plain in east and southeast locations represents the worst quality of the water, and then it goes toward alkalinisation. This is probably due to the intensive agricultural activities in these location (west and northwest) and the presence of salt pan in east part, also because of low quality of geological formation. Also, the iso-decline map of water table showed highest decrease in these area which overlap the dense rural area.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Quality and Table Level Water, GIS, Interpolation, Variogram, Mosian
Subjects: S Agriculture > S Agriculture (General)
Depositing User: admin admin1 admin2
Date Deposited: 15 Nov 2016 05:19
Last Modified: 15 Nov 2016 05:19

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