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Remote sensing retrieval of surface suspended sediment concentration in the Yellow River Estuary
作者: Zhan Chao1,2,3; Yu Junbao1,2; Wang Qing2; Li Yunzhao2; Zhou Di2; Xing Qinghui1,3; Chu Xiaojing1,3
ISSN号: 1002-0063
出版日期: 2017-12-01
卷号: 27, 期号:6, 页码:934-947
关键词: surface suspended sediment concentration (SSSC) ; water spectral reflectance ; cubic model ; quantitative remote sensing inversion ; Yellow River Estuary
DOI: 10.1007/s11769-017-0921-7
产权排序: 第1完成单位
通讯作者: Yu Junbao(Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China)
英文摘要: Accurate assessment of surface suspended sediment concentration (SSSC) in estuary is essential to address several important issues: erosion, water pollution, human health risks, etc. In this study, an empirical cubic retrieval model was developed for the retrieval of SSSC from Yellow River Estuary. Based on sediments and seawater collected from the Yellow River and southeastern Laizhou Bay, SSSC conditions were reproduced in the laboratory at increasing concentrations within a range common to field observations. Continuous spectrum measurements of the various SSSCs ranging from 1 to 5700 mg/l were carried out using an AvaField-3 spectrometer. The results indicated the good correlation between water SSSC and spectral reflectance (R (rs)) was obtained in the spectral range of 726-900 nm. At SSSC greater than 2700 mg/L, the 740-900 nm spectral range was less susceptible to the effects of spectral reflectance saturation and more suitable for retrieval of high sediment concentrations. The best correlations were obtained for the reflectance ratio of 820 nm to 490 nm. Informed by the correlation between R (rs) and SSSC, a retrieval model was developed (R (2) = 0.992). The novel cubic model, which used the ratio of a near-infrared (NIR) band (740-900 nm) to a visible band (400-600 nm) as factors, provided robust quantification of high SSSC water samples. Two high SSSC centers, with an order of 10(3) mg/l, were found in the inversion results around the abandoned Diaokou River mouth, the present Yellow River mouth to the abandoned Qingshuigou River mouth. There was little sediment exchange between the two high SSSC centers due to the directions of the residual currents and vertical mixing.
研究领域[WOS]: Environmental Sciences & Ecology
项目资助者: National Key R&D Program of China(2017YFC0505902) ; Project of the Cultivation Plan of Superior Discipline Talent Teams of Universities in Shandong Province ; National Natural Science Foundation of China(41471005, 41271016)
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000415349200007
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内容类型: 期刊论文
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
2.Ludong Univ, Inst Coastal Ecol, Yantai 264025, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhan Chao,Yu Junbao,Wang Qing,et al. Remote sensing retrieval of surface suspended sediment concentration in the Yellow River Estuary[J]. CHINESE GEOGRAPHICAL SCIENCE,2017,27(6):934-947.
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