Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration

Detalhes bibliográficos
Autor(a) principal: Dalbianco,Leandro
Data de Publicação: 2017
Outros Autores: Ramon,Rafael, Barros,Claudia A. P. de, Minella,Jean P. G., Merten,Gustavo H., Didoné,Elizeu J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Engenharia Agrícola e Ambiental (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001200884
Resumo: ABSTRACT The influx of sediments carried by rivers can be measured continuously using a turbidimeter through the indirect relationship between turbidity and suspended sediment concentration (SSC). However, this process is dependent on obtaining water samples with suspended sediments to calibrate the turbidimeter. Sampling can be carried out through different methods, resulting in errors and uncertainties in estimating the SSC. Four different possibilities for the composition of the calibration curve were tested in order to evaluate the effectiveness of the turbidimeter calibration for different sampling strategies. The study was conducted in 2012 and 2013 in two catchments in southern Brazil that had a strong sediment yield impact. The results indicate that sampling during rainfall events generate a significant and representative SSC for the turbidimeter calibration. The use of an integrating sampler for synthetic samples provides an effective calibration, but overestimates SSC compared to calibration from rainfall event sampling. The samples collected at fixed intervals - weekly and daily - generated an insufficient amount of data and are not representative of real sediment concentrations of the catchments.
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spelling Sampling strategies to estimate suspended sediment concentration for turbidimeter calibrationturbidityrainfall eventsamplingautomatic sensorsABSTRACT The influx of sediments carried by rivers can be measured continuously using a turbidimeter through the indirect relationship between turbidity and suspended sediment concentration (SSC). However, this process is dependent on obtaining water samples with suspended sediments to calibrate the turbidimeter. Sampling can be carried out through different methods, resulting in errors and uncertainties in estimating the SSC. Four different possibilities for the composition of the calibration curve were tested in order to evaluate the effectiveness of the turbidimeter calibration for different sampling strategies. The study was conducted in 2012 and 2013 in two catchments in southern Brazil that had a strong sediment yield impact. The results indicate that sampling during rainfall events generate a significant and representative SSC for the turbidimeter calibration. The use of an integrating sampler for synthetic samples provides an effective calibration, but overestimates SSC compared to calibration from rainfall event sampling. The samples collected at fixed intervals - weekly and daily - generated an insufficient amount of data and are not representative of real sediment concentrations of the catchments.Departamento de Engenharia Agrícola - UFCG2017-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001200884Revista Brasileira de Engenharia Agrícola e Ambiental v.21 n.12 2017reponame:Revista Brasileira de Engenharia Agrícola e Ambiental (Online)instname:Universidade Federal de Campina Grande (UFCG)instacron:UFCG10.1590/1807-1929/agriambi.v21n12p884-889info:eu-repo/semantics/openAccessDalbianco,LeandroRamon,RafaelBarros,Claudia A. P. deMinella,Jean P. G.Merten,Gustavo H.Didoné,Elizeu J.eng2017-11-13T00:00:00Zoai:scielo:S1415-43662017001200884Revistahttp://www.scielo.br/rbeaaPUBhttps://old.scielo.br/oai/scielo-oai.php||agriambi@agriambi.com.br1807-19291415-4366opendoar:2017-11-13T00:00Revista Brasileira de Engenharia Agrícola e Ambiental (Online) - Universidade Federal de Campina Grande (UFCG)false
dc.title.none.fl_str_mv Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
title Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
spellingShingle Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
Dalbianco,Leandro
turbidity
rainfall event
sampling
automatic sensors
title_short Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
title_full Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
title_fullStr Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
title_full_unstemmed Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
title_sort Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration
author Dalbianco,Leandro
author_facet Dalbianco,Leandro
Ramon,Rafael
Barros,Claudia A. P. de
Minella,Jean P. G.
Merten,Gustavo H.
Didoné,Elizeu J.
author_role author
author2 Ramon,Rafael
Barros,Claudia A. P. de
Minella,Jean P. G.
Merten,Gustavo H.
Didoné,Elizeu J.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Dalbianco,Leandro
Ramon,Rafael
Barros,Claudia A. P. de
Minella,Jean P. G.
Merten,Gustavo H.
Didoné,Elizeu J.
dc.subject.por.fl_str_mv turbidity
rainfall event
sampling
automatic sensors
topic turbidity
rainfall event
sampling
automatic sensors
description ABSTRACT The influx of sediments carried by rivers can be measured continuously using a turbidimeter through the indirect relationship between turbidity and suspended sediment concentration (SSC). However, this process is dependent on obtaining water samples with suspended sediments to calibrate the turbidimeter. Sampling can be carried out through different methods, resulting in errors and uncertainties in estimating the SSC. Four different possibilities for the composition of the calibration curve were tested in order to evaluate the effectiveness of the turbidimeter calibration for different sampling strategies. The study was conducted in 2012 and 2013 in two catchments in southern Brazil that had a strong sediment yield impact. The results indicate that sampling during rainfall events generate a significant and representative SSC for the turbidimeter calibration. The use of an integrating sampler for synthetic samples provides an effective calibration, but overestimates SSC compared to calibration from rainfall event sampling. The samples collected at fixed intervals - weekly and daily - generated an insufficient amount of data and are not representative of real sediment concentrations of the catchments.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001200884
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001200884
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1807-1929/agriambi.v21n12p884-889
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Departamento de Engenharia Agrícola - UFCG
publisher.none.fl_str_mv Departamento de Engenharia Agrícola - UFCG
dc.source.none.fl_str_mv Revista Brasileira de Engenharia Agrícola e Ambiental v.21 n.12 2017
reponame:Revista Brasileira de Engenharia Agrícola e Ambiental (Online)
instname:Universidade Federal de Campina Grande (UFCG)
instacron:UFCG
instname_str Universidade Federal de Campina Grande (UFCG)
instacron_str UFCG
institution UFCG
reponame_str Revista Brasileira de Engenharia Agrícola e Ambiental (Online)
collection Revista Brasileira de Engenharia Agrícola e Ambiental (Online)
repository.name.fl_str_mv Revista Brasileira de Engenharia Agrícola e Ambiental (Online) - Universidade Federal de Campina Grande (UFCG)
repository.mail.fl_str_mv ||agriambi@agriambi.com.br
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