TEMPORAL AND SPATIAL VARIATIONS OF GROUNDWATER QUALITY OF MARVAST PLAIN

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HASSANZADEH NAFOOTI MOHAMMAD; EMAMI MAYBODI EHSAN

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Journal: WATERSHED ENGINEERING AND MANAGEMENT Year:2018 | Volume:10 | Issue:1 Page(s): 121-132

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Title

TEMPORAL AND SPATIAL VARIATIONS OF GROUNDWATER QUALITY OF MARVAST PLAIN

Author(s)

HASSANZADEH NAFOOTI MOHAMMAD | EMAMI MAYBODI EHSAN | Issue Writer Certificate

Keywords

GEOSTATISTICQ2

GISQ2

KRIGINGQ2

SAMPLINGQ2

YAZD PROVINCEQ2

ZONINGQ2

Abstract

This research aims to study temporal and spatial variations of groundwater quality of Marvast Plain to manage these recourses. For this purpose, total anion and cation, a percentage of sodium, Ca, Cl, EC, HCO3, K, Mg, Na, pH, SRA, So4, TH parameters were prepared and a statistical period of 14 years (1377_1390) was selected using the evaluation of incomplete data. Semivariograms and cross semivariograms were potted to perform geostatistcal methods and the best model was selected with regard to more R2, less RSS and a strong spatial structure, and an exponential model was fitted for most parameters. Then, interpolation methods, such as Radial Basis Function (RBF), Inverse Distance Weighting with powers of 1 and 2 (IDW), KRIGING and coKriging were used. The most accurate method was selected for parameters using cross validation method and error estimation indexes such as Mean Absolute Error (MAE), Mean Bias Error (MBE) and Root Mean Square Error (RMSE). The results showed that coKriging is the best method for estimating most parameters (total anion and cation, EC, Cl, Ca, K, Mg, Na, TH). KRIGING is defined as the most suitable method for estimating SRA, So4 and pH, and RBF and IDW with power 1 are the most fitted methods for a percentage of Sodium and HCO3, respectively. The results showed that the density of most parameters increases from west to east and south to north of the study area. Also, decreasing underground water quality is observed over the time.

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APA: Copy

HASSANZADEH NAFOOTI, MOHAMMAD, & EMAMI MAYBODI, EHSAN. (2018). TEMPORAL AND SPATIAL VARIATIONS OF GROUNDWATER QUALITY OF MARVAST PLAIN. WATERSHED ENGINEERING AND MANAGEMENT, 10(1 ), 121-132. SID. https://sid.ir/paper/234590/en

Vancouver: Copy

HASSANZADEH NAFOOTI MOHAMMAD, EMAMI MAYBODI EHSAN. TEMPORAL AND SPATIAL VARIATIONS OF GROUNDWATER QUALITY OF MARVAST PLAIN. WATERSHED ENGINEERING AND MANAGEMENT[Internet]. 2018;10(1 ):121-132. Available from: https://sid.ir/paper/234590/en

IEEE: Copy

MOHAMMAD HASSANZADEH NAFOOTI, and EHSAN EMAMI MAYBODI, “TEMPORAL AND SPATIAL VARIATIONS OF GROUNDWATER QUALITY OF MARVAST PLAIN,” WATERSHED ENGINEERING AND MANAGEMENT, vol. 10, no. 1 , pp. 121–132, 2018, [Online]. Available: https://sid.ir/paper/234590/en

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