Remote sensing monitoring of suspended sediment concentration based on GF-4 satellite in the Hangzhou Bay

Shao Yujie; Hu Yuekai; Zhou Bin; Chen Fang; He Xianqiang; Wang Guojun; Yuan Xiaohong; Zhou Yali; Yu Zhifeng

doi:10.3969/j.issn.0253-4193.2020.09.014

Volume 42 Issue 9

Nov. 2020

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Article Navigation > Haiyang Xuebao > 2020 > 42(9): 134-142

Shao Yujie，Hu Yuekai，Zhou Bin, et al. Remote sensing monitoring of suspended sediment concentration based on GF-4 satellite in the Hangzhou Bay[J]. Haiyang Xuebao，2020, 42(9)：134–142 doi: 10.3969/j.issn.0253-4193.2020.09.014

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Remote sensing monitoring of suspended sediment concentration based on GF-4 satellite in the Hangzhou Bay

doi: 10.3969/j.issn.0253-4193.2020.09.014

Shao Yujie^{1, 6
,},
Hu Yuekai²,
Zhou Bin^{1, 6},
Chen Fang³,
He Xianqiang⁴,
Wang Guojun⁵,
Yuan Xiaohong^{1, 6},
Zhou Yali^{1, 6},
Yu Zhifeng^{1, 5, 6
,
,}

1.
Institute of Remote Sensing and Earth Sciences, Hangzhou Normal University, Hangzhou 311121, China
2.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
3.
State Key Laboratory of Surveying, Mapping and Remote Sensing Information Engineering, Wuhan University, Wuhan 430079, China
4.
Fisheries Big Data Center of South China Sea, Zhanjiang 524006, China
5.
Laboratory of Target Microwave Properties, Deqing Academy of Satellite Applications, Deqing 313200, China
6.
Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change, Hangzhou 311121, China

Received Date: 2019-06-22
Rev Recd Date: 2020-04-14

Available Online: 2021-04-21

Publish Date: 2020-09-25

Abstract

Abstract

As an important water quality parameter, the distribution and dynamic change of suspended sediment have a profound impact on the ecology, environment and material circulation of the estuary and the near shore. GF-4 satellite has the ability to observe at any time, can quickly provide a large number of observation data, and has the application potential in water color remote sensing. In order to explore the monitoring effect of GF-4 satellite on suspended sediment in water, takes the Hangzhou Bay as the research area in this paper, constructs suspended sediment concentration inversion model, and uses GOCI satellite to cross verify. The results show that the index model established by using the ratio of remote sensing reflectance of the 5th and 4th band of GF-4 as the remote sensing factor has a high inversion accuracy, with a determination coefficient of 0.92, a root mean square error of 273.6 mg/L and an mean relative error of 17.2%. The cross-validation results show that GF-4 satellite data, as a new remote sensing data source, is similar to the distribution of GOCI satellite inversion suspended sediment concentration in the low concentration region, but the difference increases with the increase of concentration in the high concentration region. The research shows that GF-4 satellite is suitable for high precision inversion in the waters with low suspended sediment concentration and can be applied in most marine areas of China.
- suspended sediment,
- Hangzhou Bay,
- GF-4 satellite,
- GOCI satellite,
- index model

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References(33)

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