Abstract: The current study on rainfall erosivity is based on 8 years rainfall data which is representing thirteen rainfall stations along the Suruli river basin of Cumbam valley as well as their adjacent area too. The research objective is to control rainfall Erosivity pattern of Suruli river basin of Cumbam valley, where using Modified Fournier Index. The linear regression model has been created which relates with the monthly EI30 index of Universal Soil Loss Equation (USLE) and modified Fournier Index has been used for assessing the monthly rainfall Erosivity values. The highest rainfall Erosivity recorded was 18670.5 MJ.MM/H/JR at Periyaru rainfall station. Whereas, the regression analysis was done with annual rainfall and annual rainfall Erosivity. The r2 value was found to be 0.117 which depicts the lesser correlation. Isoerodent map was prepared using the annual rainfall / annual rainfall Erosivity values and geographical locations of each rainfall stations around Suruli River Basin of Cumbam Valley. The according to FAO Erosivity class range shows that the southern part of study area is high erosive occurs.
Keywords: Rainfall Erosivity, Isoerodent, linear regression, FAO.
Title: Analysis of the Pattern of Rainfall Erosivity in Suruli River Basin of Cumbam valley using Modified Fournier Index
Author: Annaidasan. K, Narmada. K
International Journal of Interdisciplinary Research and Innovations
ISSN 2348-1218 (print), ISSN 2348-1226 (online)
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