<b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, Brazil
The aim of this study was to evaluate the statistical properties of a daily rainfall time series recorded in Piracicaba river basin, state of Sao Paulo, Brazil in the period 1917-2016. We apply Multifractal Detrended Fluctuation Analysis (MF-DFA) on deseasonalized data and calculate generalized scal...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2018-07-01
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| Series: | Acta Scientiarum: Technology |
| Subjects: | |
| Online Access: | http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/35116 |
| _version_ | 1811312885553430528 |
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| author | Sílvio Fernando Alves Xavier Júnior Tatijana Stosic Borko Stosic Jader Da Silva Jale Érika Fialho Morais Xavier |
| author_facet | Sílvio Fernando Alves Xavier Júnior Tatijana Stosic Borko Stosic Jader Da Silva Jale Érika Fialho Morais Xavier |
| author_sort | Sílvio Fernando Alves Xavier Júnior |
| collection | DOAJ |
| description | The aim of this study was to evaluate the statistical properties of a daily rainfall time series recorded in Piracicaba river basin, state of Sao Paulo, Brazil in the period 1917-2016. We apply Multifractal Detrended Fluctuation Analysis (MF-DFA) on deseasonalized data and calculate generalized scaling exponents, h(q). We find that h(q) is a decreasing function of q, indicating multifractal behavior of precipitation dynamics. We also perform calculations on two subseries corresponding to the periods before and after 1970, where the second period is characterised by a significant increase of positive trend in rainfall intensity. We find no significant change in behaviour between these two subseries and the entire series, indicating that the dynamics of the underlying process did not change. Our results agree with previous studies on multifractal properties of rainfall time series in other regions of the world supporting the hypotheses of the existence of multiplicative cascade processes in the atmosphere. |
| first_indexed | 2024-04-13T10:44:28Z |
| format | Article |
| id | doaj.art-3b05b3701ff44d06b24787a69666a8cf |
| institution | Directory Open Access Journal |
| issn | 1807-8664 |
| language | English |
| last_indexed | 2024-04-13T10:44:28Z |
| publishDate | 2018-07-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Technology |
| spelling | doaj.art-3b05b3701ff44d06b24787a69666a8cf2022-12-22T02:49:49ZengUniversidade Estadual de MaringáActa Scientiarum: Technology1807-86642018-07-01401e35116e3511610.4025/actascitechnol.v40i1.3511618468<b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, BrazilSílvio Fernando Alves Xavier Júnior0Tatijana Stosic1Borko Stosic2Jader Da Silva Jale3Érika Fialho Morais Xavier4Universidade Estadual da ParaíbaUniversidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoThe aim of this study was to evaluate the statistical properties of a daily rainfall time series recorded in Piracicaba river basin, state of Sao Paulo, Brazil in the period 1917-2016. We apply Multifractal Detrended Fluctuation Analysis (MF-DFA) on deseasonalized data and calculate generalized scaling exponents, h(q). We find that h(q) is a decreasing function of q, indicating multifractal behavior of precipitation dynamics. We also perform calculations on two subseries corresponding to the periods before and after 1970, where the second period is characterised by a significant increase of positive trend in rainfall intensity. We find no significant change in behaviour between these two subseries and the entire series, indicating that the dynamics of the underlying process did not change. Our results agree with previous studies on multifractal properties of rainfall time series in other regions of the world supporting the hypotheses of the existence of multiplicative cascade processes in the atmosphere.http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/35116rainfallpower lawMF-DFA. |
| spellingShingle | Sílvio Fernando Alves Xavier Júnior Tatijana Stosic Borko Stosic Jader Da Silva Jale Érika Fialho Morais Xavier <b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, Brazil Acta Scientiarum: Technology rainfall power law MF-DFA. |
| title | <b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, Brazil |
| title_full | <b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, Brazil |
| title_fullStr | <b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, Brazil |
| title_full_unstemmed | <b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, Brazil |
| title_short | <b>A Brief multifractal analysis of rainfall dynamics in Piracicaba, São Paulo, Brazil |
| title_sort | b a brief multifractal analysis of rainfall dynamics in piracicaba sao paulo brazil |
| topic | rainfall power law MF-DFA. |
| url | http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/35116 |
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