Assessing soil surface roughness decay during simulated rainfall by multifractal analysis

Detalhes bibliográficos
Autor(a) principal: Vázquez, E. Vidal
Data de Publicação: 2008
Outros Autores: Moreno, R. García, Miranda, José Garcia Vivas, Díaz, M. C., Requejo, A. Saá, Ferreiro, J. Paz, Tarquis, A. M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14611
Resumo: p. 457-468
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spelling Vázquez, E. VidalMoreno, R. GarcíaMiranda, José Garcia VivasDíaz, M. C.Requejo, A. SaáFerreiro, J. PazTarquis, A. M.2014-02-13T18:13:45Z2014-02-13T18:13:45Z20081023-5809http://repositorio.ufba.br/ri/handle/ri/14611v. 15, n. 1p. 457-468Understanding and describing the spatial characteristics of soil surface microrelief are required for modelling overland flow and erosion. We employed the multifractal approach to characterize topographical point elevation data sets acquired by high resolution laser scanning for assessing the effect of simulated rainfall on microrelief decay. Three soil surfaces with different initial states or composition and rather smooth were prepared on microplots and subjected to successive events of simulated rainfall. Soil roughness was measured on a 2×2 mm2 grid, initially, i.e. before rain, and after each simulated storm, yielding a total of thirteen data sets for three rainfall sequences. The vertical microrelief component as described by the statistical index random roughness (RR) exhibited minor changes under rainfall in two out of three study cases, which was due to the imposed wet initial state constraining aggregate breakdown. The effect of cumulative rainfall on microrelief decay was also assessed by multifractal analysis performed with the box-count algorithm. Generalized dimension, Dq, spectra allowed characterization of the spatial variation of soil surface microrelief measured at the microplot scale. These Dq spectra were also sensitive to temporal changes in soil surface microrelief, so that in all the three study rain sequences, the initial soil surface and the surfaces disturbed by successive storms displayed great differences in their degree of multifractality. Therefore, Multifractal parameters best discriminate between successive soil stages under a given rain sequence. Decline of RR and multifractal parameters showed little or no association.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-12-09T14:17:05Z No. of bitstreams: 1 10.5194npg-15-457-2008.pdf: 417638 bytes, checksum: cee53a88b458335c0691fc03c6c37df4 (MD5)Approved for entry into archive by Alda Lima da Silva (sivalda@ufba.br) on 2014-02-13T18:13:45Z (GMT) No. of bitstreams: 1 10.5194npg-15-457-2008.pdf: 417638 bytes, checksum: cee53a88b458335c0691fc03c6c37df4 (MD5)Made available in DSpace on 2014-02-13T18:13:45Z (GMT). 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dc.title.pt_BR.fl_str_mv Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
dc.title.alternative.pt_BR.fl_str_mv Nonlinear Processes in Geophysics
title Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
spellingShingle Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
Vázquez, E. Vidal
title_short Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
title_full Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
title_fullStr Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
title_full_unstemmed Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
title_sort Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
author Vázquez, E. Vidal
author_facet Vázquez, E. Vidal
Moreno, R. García
Miranda, José Garcia Vivas
Díaz, M. C.
Requejo, A. Saá
Ferreiro, J. Paz
Tarquis, A. M.
author_role author
author2 Moreno, R. García
Miranda, José Garcia Vivas
Díaz, M. C.
Requejo, A. Saá
Ferreiro, J. Paz
Tarquis, A. M.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Vázquez, E. Vidal
Moreno, R. García
Miranda, José Garcia Vivas
Díaz, M. C.
Requejo, A. Saá
Ferreiro, J. Paz
Tarquis, A. M.
description p. 457-468
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2014-02-13T18:13:45Z
dc.date.available.fl_str_mv 2014-02-13T18:13:45Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/14611
dc.identifier.issn.none.fl_str_mv 1023-5809
dc.identifier.number.pt_BR.fl_str_mv v. 15, n. 1
identifier_str_mv 1023-5809
v. 15, n. 1
url http://repositorio.ufba.br/ri/handle/ri/14611
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.country.fl_str_mv Brasil
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