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Comparisons of acoustic and optical sensors for suspended sediment concentration measurements under non-homogeneous solutions
- Source :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP, Scopus-Elsevier
- Publication Year :
- 2011
- Publisher :
- Coastal Education and Research Foundation (CERF), 2011.
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Abstract
- A set of acoustic and optical turbidity sensors was tested and compared in laboratory conditions under suspended sediment concentrations of the range 0.1-10 g/l. Various well sorted, mixed, as well as natural sediments (including clay, mud and sand) were used to cover a wide range of conditions, with emphasis on bimodal sediments. All optical sensors showed good performance with post-calibration RMS errors typically below 10% of the range and R2 Pearson coefficients exceeding 95% (a=0.1). The Wetlabs produced the smallest RMS errors, followed by the Troll (overall average ~4.3% and 5.8%, respectively), but the differences were not significant. OBS-3+ performance was also good (overall average RMS error ~3%), while the Vector ADV produced measurements with average RMS errors ~10.7% of the range for SSC up to 1 g/l, above which signal saturation is likely to occur. info:eu-repo/semantics/publishedVersion
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP, Scopus-Elsevier
- Accession number :
- edsair.dedup.wf.001..8506fb918fafe530606f8a118cc1f96c