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IJCRR. 2015; 7(7): 66-71


ANALYSIS OF SELECTED SPATIAL INTERPOLATION TECHNIQUES FOR RAINFALL DATA

B. Mahalingam, Amin Noori Deldar, M. Vinay.

Abstract
Spatial interpolation techniques are used to find out the unknown places values using known location values. There are several
interpolation techniques available to predict the unknown area’s values, so it is necessary to find out, which is highly suitable
interpolation technique before conducting any study. Therefore the present study has been conducted to find out the suitable
interpolation technique for rainfall distribution of Mysore and Chamrajanagar districts using collected sample known location rain
gauge values. The study has been analyzed selected interpolation techniques such as, Inverse Distance Weighting, Kriging,
Natural Neighbor, Spline and Trend. The result of present study found that, Kriging Ordinary method is highly suitable more than
any other method followed by IDW and Kriging Universal.

Key words: Interpolation, Rainfall variability, Spatial analysis, Mean square error



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