ESTIMATION OF SOIL EROSION INDEX FROM DAILY RAINFALL AMOUNT

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GHADAMI A.; SHAMSAEI A.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2006 | Volume:13 | Issue:1 Page(s): 31-38

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Information Journal Paper

Title

ESTIMATION OF SOIL EROSION INDEX FROM DAILY RAINFALL AMOUNT

Author(s)

GHADAMI A. | SHAMSAEI A. | Issue Writer Certificate

Keywords

RAINQ2

EROSIONQ3

RAINFALL INDEXQ1

SOILQ2

Abstract

Erosion is defined as the separation and transference of the SOIL particles from the surface, which can take place by water or wind. Among the factors affecting SOIL EROSION by water are; water or RAIN erosivity, SOIL erodibility, slope of the surface, coverage of the SOIL surface, and SOIL management. RAIN erosivity index is the most well known index renderd in the universal SOIL loss equation (USLE) which is called as Wischmeier index (R). This index is defined as the sum of (E.I30) in which E is the kinetic energy of the RAIN and 130 is the maximum intensity of 30 minutes RAIN. in this research first a relationship between kinetic energy of the RAIN and its intensity was established. This work was conducted by a RAINfall simulator. Then, Theran RAINfall data extracted from the graphs of RAIN gauge record was collected. RAINfall data course was for a period of 20 years. Therefore, it was possible to calculate the total kinetic energy and then the R factor. The annual estimated average R in Tehran was 98 Mj.mm/ha/hr. Also it was possible to calculate the erosivity index for the whole year. Based upon the index of R for each RAIN or the annual R relationships between R and some RAINfall parameters were investigated. These parameters were, amount of climate, daily RAINfall, maximum daily precipitation, average 6-hour prectitation. Erosivity index for different return periods was also calculated. By this means, for which regions having the same type of the climate, the amount of erosivity index can be estimated.

Cites

GEOMORPHOLOGIC EXPLANATION OF EROSION CONCEPT AND COMPARING IT TO NATURAL RESOURCES SCIENCE ASPECTS

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APA: Copy

GHADAMI, A., & SHAMSAEI, A.. (2006). ESTIMATION OF SOIL EROSION INDEX FROM DAILY RAINFALL AMOUNT. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 13(1), 31-38. SID. https://sid.ir/paper/9496/en

Vancouver: Copy

GHADAMI A., SHAMSAEI A.. ESTIMATION OF SOIL EROSION INDEX FROM DAILY RAINFALL AMOUNT. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2006;13(1):31-38. Available from: https://sid.ir/paper/9496/en

IEEE: Copy

A. GHADAMI, and A. SHAMSAEI, “ESTIMATION OF SOIL EROSION INDEX FROM DAILY RAINFALL AMOUNT,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 13, no. 1, pp. 31–38, 2006, [Online]. Available: https://sid.ir/paper/9496/en

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