Rainfall aggressiveness in the eastern part of Romania

Iulian Catalin Stanga

Abstract


This article addresses the problematic of rainfall aggressiveness, with a special regard on the eastern part of Romania. The purpose of this approach is comparative analysis of some frequently used indicators in scientific literature or in the special studies developed under the aegis of Institute of Pedological and Agrochemical Studies (ICPA) Bucharest. Based on data from Bârlad meteorological station, the rainfall erosivity has been calculated through Yarnell index, this one being used to obtain the torrentiality coefficient as a ratio between the average intensity of the analyzed rain and the average intensity calculated by previously mentioned index. Subsequently, we exploited the indicator suggested by Stănescu et al. (1969), as product between quantity of precipitation (in each rain) and the average intensity of the torrential core for 15 minutes (H∙i15). The results show the need to review the indicator 99 from The Methodology of Soil Studies Elaboration. In view of these considerations, the index suggested by Fournier (1960) and amended by Arnoldus (1980) has been calculated. This is a synthetic index more easily to be obtained, which has a high degree of relativity for case studies, but which may be used successfully for regional analyses or general synthesis. For such approach, we used climate data (1961-2006) from 15 meteorological stations placed in the eastern part of Romania. Beyond the level of generalization, the validity of results is proven by a significant correlation between Fournier index values and the monthly average erosion at plots under fallow and corn.


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References


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DOI: http://dx.doi.org/10.15551/scigeo.v57i0.102

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