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Assessment of Rainfall Kinetic-Energy-Intensity Relationships
Univ Roma, Dipartimento Ingn Civile Edile & Ambientale, I-00184 Rome, Italy.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten- och landskapslära. Ctr Nat Hazards & Disaster Sci, CNDS, S-75236 Uppsala, Sweden.ORCID-id: 0000-0002-4714-2511
Univ Roma, Dipartimento Ingn Civile Edile & Ambientale, I-00184 Rome, Italy.
Univ Roma, Dipartimento Ingn Civile Edile & Ambientale, I-00184 Rome, Italy.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Water, ISSN 2073-4441, E-ISSN 2073-4441, Vol. 11, nr 10, artikkel-id 1994Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Raindrop-impact-induced erosion starts when detachment of soil particles from the surface results from an expenditure of raindrop energy. Hence, rain kinetic energy is a widely used indicator of the potential ability of rain to detach soil. Although it is widely recognized that knowledge of rain kinetic energy plays a fundamental role in soil erosion studies, its direct evaluation is not straightforward. Commonly, this issue is overcome through indirect estimation using another widely measured hydrological variable, namely, rainfall intensity. However, it has been challenging to establish the best expression to relate kinetic energy to rainfall intensity. In this study, first, kinetic energy values were determined from measurements of an optical disdrometer. Measured kinetic energy values were then used to assess the applicability of the rainfall intensity relationship proposed for central Italy and those used in the major equations employed to estimate the mean annual soil loss, that is, the Universal Soil Loss Equation (USLE) and its two revised versions (RUSLE and RUSLE2). Then, a new theoretical relationship was developed and its performance was compared with equations found in the literature.

sted, utgiver, år, opplag, sider
MDPI, 2019. Vol. 11, nr 10, artikkel-id 1994
Emneord [en]
rainfall intensity, rainfall kinetic energy, disdrometer, drop size distribution, rainfall erosivity
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-398572DOI: 10.3390/w11101994ISI: 000495598400039OAI: oai:DiVA.org:uu-398572DiVA, id: diva2:1376312
Tilgjengelig fra: 2019-12-09 Laget: 2019-12-09 Sist oppdatert: 2019-12-09bibliografisk kontrollert

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