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DOI: 10.1371/journal.pone.0170706
Title:
Towards Cost-Effective Operational Monitoring Systems for Complex Waters: Analyzing Small-Scale Coastal Processes with Optical Transmissometry
Author: Marta Ramírez-Pérez; Rafael Gonçalves-Araujo; Sonja Wiegmann; Elena Torrecilla; Raul Bardaji; Rüdiger Röttgers; Astrid Bracher; Jaume Piera
Source Publication: PLOS ONE
ISSN: 1932-6203
Indexed By: SCI-E
Publishing Year: 2017
Date Published: 2017-1-20
Volume: 12, Issue:1
Language: 英语
Keyword: Biogeochemistry ; Phytoplankton ; Particulates ; Sea water ; Chlorophyll ; Coastal ecosystems ; Salinity ; Water columns
Subject in Chinese: 有机物 ; 颗粒物 ; 吸收 ; 叶绿素 ; 盐度 ; 海岸演变 ; 海岸作用 ; 吸附作用 ; 海岸演变过程
Subject: ORGANIC MATTER ; PARTICULATES ; ABSORPTION ; CHLOROPHYLL ; SALINITY ; COASTAL PROCESSES
English Abstract: The detection and prediction of changes in coastal ecosystems require a better understanding of the complex physical, chemical and biological interactions, which involves that observations should be performed continuously. For this reason, there is an increasing demand for small, simple and cost-effective in situ sensors to analyze complex coastal waters at a broad range of scales. In this context, this study seeks to explore the potential of beam attenuation spectra, c(λ), measured in situ with an advanced-technology optical transmissometer, for assessing temporal and spatial patterns in the complex estuarine waters of Alfacs Bay (NW Mediterranean) as a test site. In particular, the information contained in the spectral beam attenuation coefficient was assessed and linked with different biogeochemical variables. The attenuation at λ = 710 nm was used as a proxy for particle concentration, TSM, whereas a novel parameter was adopted as an optical indicator for chlorophyll a (Chl-a) concentration, based on the local maximum of c(λ) observed at the long-wavelength side of the red band Chl-a absorption peak. In addition, since coloured dissolved organic matter (CDOM) has an important influence on the beam attenuation spectral shape and complementary measurements of particle size distribution were available, the beam attenuation spectral slope was used to analyze the CDOM content. Results were successfully compared with optical and biogeochemical variables from laboratory analysis of collocated water samples, and statistically significant correlations were found between the attenuation proxies and the biogeochemical variables TSM, Chl-a and CDOM. This outcome depicted the potential of high-frequency beam attenuation measurements as a simple, continuous and cost-effective approach for rapid detection of changes and patterns in biogeochemical properties in complex coastal environments.
Related Link: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0170706&type=printable
Citation statistics:
被引频次[WOS]:2   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/25790
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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Affiliation: Department of Physical and Technological Oceanography, Institute of Marine Sciences (ICM-CSIC), Barcelona, Spain;Phytooptics Group, Physical Oceanography of Polar Seas, Climate Sciences Division, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany;Phytooptics Group, Physical Oceanography of Polar Seas, Climate Sciences Division, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany;Department of Physical and Technological Oceanography, Institute of Marine Sciences (ICM-CSIC), Barcelona, Spain;Department of Physical and Technological Oceanography, Institute of Marine Sciences (ICM-CSIC), Barcelona, Spain;Remote Sensing Department, Institute for Coastal Research, Centre for Materials and Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany;Phytooptics Group, Physical Oceanography of Polar Seas, Climate Sciences Division, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany;Institute of Environmental Physics, University of Bremen, Bremen, Germany;Department of Physical and Technological Oceanography, Institute of Marine Sciences (ICM-CSIC), Barcelona, Spain

Recommended Citation:
Marta Ramírez-Pérez,Rafael Gonçalves-Araujo,Sonja Wiegmann,et al. Towards Cost-Effective Operational Monitoring Systems for Complex Waters: Analyzing Small-Scale Coastal Processes with Optical Transmissometry[J]. PLOS ONE,2017-01-01,12(1)
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