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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
22/03/1996 |
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Data da última atualização: |
18/07/2018 |
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Autoria: |
LOMBARDI NETO, F. |
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Afiliação: |
Purdue University. |
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Título: |
Rainfall erosivity - its distribution and relationsphi with soil loss at Campinas, Brazil. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
[S.l.] : Purdue University, 1977. |
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Páginas: |
53p. |
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Idioma: |
Inglês |
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Notas: |
Tese de Mestrado. |
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Conteúdo: |
The rainfall erosion potential for individual storms was calculated for Campinas, Sao Paulo State, Brazil. The erosion potential of a rainstorm is the product of the rainfall energy and the maximum 30-minutes intensity of the storm. Over a 22 year period the average annual erosion indez computed by adding the EI values of storms greater tha 10 millimeter was 690 (values range from 351 to 1410). Monthly and seasonal distributions of the erosion index were established. The data showed that 62% of the annual erosion potential occurs during the months of December to February. The frequency distribution of the total annual and maximum annual individual storm erosion index was skewed, but the logatithms of the data appeared to be normally distributed. Expected average monthly and annual values of erosion potential may be readily estimated from local rainfall amount records by the equation EI = 6.987 (p2/P)0.850. A high correlation was found between actual and estimated EI values. The estimates of average erosion losses over an extended period index values are sufficiently accurate to serve as a sound basis for conservation planning. |
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Palavras-Chave: |
Erosion; Erosividade. |
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Thesagro: |
Agronomia; Chuva; Clima; Climatologia; Erosão; Solo. |
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Thesaurus Nal: |
climatology; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01773nam a2200253 a 4500
001 1787889
005 2018-07-18
008 1977 bl uuuu m 00u1 u #d
100 1 $aLOMBARDI NETO, F.
245 $aRainfall erosivity - its distribution and relationsphi with soil loss at Campinas, Brazil.
260 $a[S.l.] : Purdue University$c1977
300 $a53p.
500 $aTese de Mestrado.
520 $aThe rainfall erosion potential for individual storms was calculated for Campinas, Sao Paulo State, Brazil. The erosion potential of a rainstorm is the product of the rainfall energy and the maximum 30-minutes intensity of the storm. Over a 22 year period the average annual erosion indez computed by adding the EI values of storms greater tha 10 millimeter was 690 (values range from 351 to 1410). Monthly and seasonal distributions of the erosion index were established. The data showed that 62% of the annual erosion potential occurs during the months of December to February. The frequency distribution of the total annual and maximum annual individual storm erosion index was skewed, but the logatithms of the data appeared to be normally distributed. Expected average monthly and annual values of erosion potential may be readily estimated from local rainfall amount records by the equation EI = 6.987 (p2/P)0.850. A high correlation was found between actual and estimated EI values. The estimates of average erosion losses over an extended period index values are sufficiently accurate to serve as a sound basis for conservation planning.
650 $aclimatology
650 $asoil
650 $aAgronomia
650 $aChuva
650 $aClima
650 $aClimatologia
650 $aErosão
650 $aSolo
653 $aErosion
653 $aErosividade
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Registro original: |
Embrapa Pantanal (CPAP) |
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