Volume 2, Issue 3 (3-2014)                   DEEJ 2014, 2(3): 29-36 | Back to browse issues page

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nohegar A, riahi F, khayat kholghy M, vagharfard H. Local Analysis of Groundwater Salinity SARKHON Plain using (GIS). DEEJ. 2014; 2 (3) :29-36
URL: http://deej.kashanu.ac.ir/article-1-86-en.html

Selecting an optimal interpolation method to estimate characteristics of an area of sampling points is not an important role in data management. One of the important indicators of quality of underground water is the electrical conductivity. Purpose of this study to select a suitability interpolation method from to evaluate and analyze the groundwater salinity SARKHON plain. To this appreciate with use ARC GIS software result of interpolation deferent such as conventional (OK), simple Kriging (SK), and certain procedures such as inverse distance weighted (IDW), radial basis function (RBF), estimated (LPI) and (GPI) was used. The results showed that the specific methods for mapping changes in the EC, (RBF) due to higher R and lower RMSE and MBE are more suitable than other methods determined by the method of by Kriging, ordinary Kriging (OK), the RMSE and MBE having higher and lower R is better than other methods. Conclusion Comparing RBF and is OK with the OK method due to the higher and lower RMSE and MBE ratio RBF method was therefore preferred as a method for mapping changes in salinity, SARKHON plain selection is final. The results show that the quality of drinking water, groundwater SARKHON plain on the diagram in its class (41/5 percent), poor (25/31), Bad (22/5%) and temporary potable (10/89 percent) is located. Plain dark gray and quality of groundwater for agricultural use in two class, the problem of low to moderate (64/8%) and (35/2%) severe problem.

Type of Study: Research | Subject: Special
Received: 2013/06/5 | Accepted: 2014/02/9 | Published: 2014/03/6

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