Search results for "Annual maxima"

showing 3 items of 3 documents

Predicting maximum annual values of event soil loss by USLE-type models

2017

Abstract Previous experimental investigations showed that a large proportion of total plot soil erosion over a long time period is generally due to relatively few, large storms. Consequently, erosion models able to accurately predict the highest plot soil loss values have practical importance since they could allow to improve the design of soil conservation practices in an area of interest. At present USLE-based models are attractive from a practical point of view, since the input data are generally easy to obtain. The USLE was developed with specific reference to the mean annual temporal scale but it was also applied at the event scale. Other models, such as the USLE-M and the USLE-MM, app…

Annual maximaHydrologyData collectionScale (ratio)0208 environmental biotechnologyBare plotEvent soil lo04 agricultural and veterinary sciences02 engineering and technology020801 environmental engineeringData setUniversal Soil Loss Equation040103 agronomy & agricultureErosionUSLE-MUSLE-MMSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali0401 agriculture forestry and fisheriesEnvironmental scienceUSLESurface runoffSoil conservationEarth-Surface ProcessesEvent (probability theory)CATENA
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Classification of Extreme Rainfall for a Mediterranean Region by Means of Atmospheric Circulation Patterns and Reanalysis Data

2020

AbstractThe atmospheric circulation can be recognized as one of the causes of severe rainfall events occurrence. Such events, especially when are characterized by short durations and high intensities, result in flood events in the Mediterranean area. It is very important to understand how these heavy rainfall events, which can be usually identified with convective rainfall, are related to the different types of atmospheric circulation. In order to do this, some weather circulation patterns (WPs), which have been derived for the Europe, have been first connected with the rainfall annual maxima (AMAX) recorded over the Sicily. The analyses allowed to identify those WPs that are more likely to…

Mediterranean climateHydrogeology010504 meteorology & atmospheric sciencesFlood mythAtmospheric circulationAMAXSettore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologia0207 environmental engineering02 engineering and technologyWeather circulation patterns Rainfall AMAX Convective precipitation Stratiform precipitation Mediterranean SicilyAnnual maxima01 natural sciencesConvective rainfallClimatologyEnvironmental sciencePrecipitation020701 environmental engineering0105 earth and related environmental sciencesWater Science and TechnologyCivil and Structural EngineeringWater Resources Management
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Estimating soil loss of given return period by USLE-M-type models

2020

Many field investigations have clearly shown that rare and severe events control total soil erosion occurring over a long time period with up to 92% of total soil erosion over a 7‐year period resulting from just three daily events. Therefore, soil conservation strategies should be developed taking into account large events rather than long‐term average erosion. From an engineering point of view, establishing the soil loss of a given return period is needed. This can be obtained by the frequency analysis of soil loss measurements or by suitable soil erosion models. The USLE‐M modified and USLE‐M based are two empirical Universal Soil Loss Equation‐Modified (USLE‐M) type models which were dev…

Return periodsoil erosionannual maximaYield (finance)Soil scienceType (model theory)return periodcomplex mixturesplot measurementSample size determinationRange (statistics)ErosionUSLE-MBEnvironmental scienceUSLE-MMSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliSurface runoffSoil conservationWater Science and Technology
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