Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/5061 |
Resumo: | The Morlet complex wavelet was used to study the scales when the level of Paraguay River in Ladário (MS) is more variable. A series of daily data of the river, from January 1900 to June 1995, was used. The following relevant results were obtained: (a) important dominant variability was noticed at the annual scale, that was stationary; (b) important variability in the interval of scales from 2 to 5 years, was detected, which was not stationary; (c) another striking variability in the interval of scales from 10 to 11 years, approximately, which was not plainly stationary, was observed; (d) regions were found with lines of phase convergence in the time-scale signal phase analysis diagram. These conclusions are discussed and compared to other investigations on the variability of hydrometeorologic data. |
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Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MSOndeleta de Morlet aplicada ao estudo da variabilidade do nível do rio Paraguai em Ladário, MShidrometeorology; Paraguay river; variability; wavelet; singularities; Pantanal wetlandhidrometeorologia; rio Paraguai; variabilidade; ondeleta; singularidades; PantanalThe Morlet complex wavelet was used to study the scales when the level of Paraguay River in Ladário (MS) is more variable. A series of daily data of the river, from January 1900 to June 1995, was used. The following relevant results were obtained: (a) important dominant variability was noticed at the annual scale, that was stationary; (b) important variability in the interval of scales from 2 to 5 years, was detected, which was not stationary; (c) another striking variability in the interval of scales from 10 to 11 years, approximately, which was not plainly stationary, was observed; (d) regions were found with lines of phase convergence in the time-scale signal phase analysis diagram. These conclusions are discussed and compared to other investigations on the variability of hydrometeorologic data.A ondeleta complexa de Morlet foi utilizada para estudar as escalas em que o nível do rio Paraguai em Ladário (MS) apresenta maior variabilidade. Para tanto, investigou-se uma série de dados diários deste rio, abrangendo o período de janeiro de 1900 a junho de 1995. Obtiveram-se os seguintes resultados relevantes: (a) verificou-se variabilidade dominante na escala anual, a qual se manteve estacionária; (b) detectou-se variabilidade importante num intervalo de escalas de 2 a 5 anos, a qual não se mostrou persistente; (c) observou-se outra variabilidade marcante no intervalo de escalas de 10 a 11 anos, aproximadamente, a qual se mostrou persistente; (d) no diagrama resultante da análise da fase do sinal em tempo-escala, apontaram-se regiões com linhas de convergência de fase. Estas conclusões são discutidas e comparadas com outras investigações sobre a variabilidade de dados hidrometeorológicos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSá, Leonardo Deane de AbreuSambatti, Sabrina Bérgoch MonteiroGalvão, Geraldo Pereira1998-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5061Pesquisa Agropecuaria Brasileira; v.33, n. especial, out. 1998; 1775-1785Pesquisa Agropecuária Brasileira; v.33, n. especial, out. 1998; 1775-17851678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5061/7214info:eu-repo/semantics/openAccess2011-08-29T13:27:26Zoai:ojs.seer.sct.embrapa.br:article/5061Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2011-08-29T13:27:26Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS Ondeleta de Morlet aplicada ao estudo da variabilidade do nível do rio Paraguai em Ladário, MS |
title |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS |
spellingShingle |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS Sá, Leonardo Deane de Abreu hidrometeorology; Paraguay river; variability; wavelet; singularities; Pantanal wetland hidrometeorologia; rio Paraguai; variabilidade; ondeleta; singularidades; Pantanal |
title_short |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS |
title_full |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS |
title_fullStr |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS |
title_full_unstemmed |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS |
title_sort |
Applying the Morlet wavelet in a study of variability of the level of Paraguay river at Ladário, MS |
author |
Sá, Leonardo Deane de Abreu |
author_facet |
Sá, Leonardo Deane de Abreu Sambatti, Sabrina Bérgoch Monteiro Galvão, Geraldo Pereira |
author_role |
author |
author2 |
Sambatti, Sabrina Bérgoch Monteiro Galvão, Geraldo Pereira |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Sá, Leonardo Deane de Abreu Sambatti, Sabrina Bérgoch Monteiro Galvão, Geraldo Pereira |
dc.subject.por.fl_str_mv |
hidrometeorology; Paraguay river; variability; wavelet; singularities; Pantanal wetland hidrometeorologia; rio Paraguai; variabilidade; ondeleta; singularidades; Pantanal |
topic |
hidrometeorology; Paraguay river; variability; wavelet; singularities; Pantanal wetland hidrometeorologia; rio Paraguai; variabilidade; ondeleta; singularidades; Pantanal |
description |
The Morlet complex wavelet was used to study the scales when the level of Paraguay River in Ladário (MS) is more variable. A series of daily data of the river, from January 1900 to June 1995, was used. The following relevant results were obtained: (a) important dominant variability was noticed at the annual scale, that was stationary; (b) important variability in the interval of scales from 2 to 5 years, was detected, which was not stationary; (c) another striking variability in the interval of scales from 10 to 11 years, approximately, which was not plainly stationary, was observed; (d) regions were found with lines of phase convergence in the time-scale signal phase analysis diagram. These conclusions are discussed and compared to other investigations on the variability of hydrometeorologic data. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-12-01 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5061 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5061 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5061/7214 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.33, n. especial, out. 1998; 1775-1785 Pesquisa Agropecuária Brasileira; v.33, n. especial, out. 1998; 1775-1785 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416658389303296 |