Remote sensing retrieval of secchi disk depth in Jiaozhou Bay using Sentinel-2 MSI image

Lei Yang; Dingfeng Yu; Hao Gao; Xiaodong Bian; Xiaoyan Liu; Yingying Gai; Deyu An; Yan Zhou; Shilin Tang

doi:10.3788/IRLA20210080

Infrared and Laser Engineering, Volume. 50, Issue 12, 20210080(2021)

Remote sensing retrieval of secchi disk depth in Jiaozhou Bay using Sentinel-2 MSI image

Lei Yang1... Dingfeng Yu1,2,*, Hao Gao1, Xiaodong Bian1, Xiaoyan Liu1, Yingying Gai1, Deyu An1, Yan Zhou1 and Shilin Tang2 |Show fewer author(s)

Author Affiliations

¹National Engineering and Technological Research Center of Marine Monitoring Equipment, Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao 266100, China

²State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

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Figures & Tables(10)

Fig. 1. Schematic diagram of sampling location

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Fig. 2. Processing levels from Level-1C to remote sensing reflectivity

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Fig. 3. Relative error between the SDD estimated and the measured

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Fig. 4. Comparison of SDD estimated value and measured value

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Fig. 5. Distribution of SDD in Jiaozhou Bay on November 3, 2016

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Fig. 6. Changes of SDD in Jiaozhou Bay caused by tides

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Fig. 7. Changes of SDD in Jiaozhou Bay caused by ships

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Table 1. Main technical indicators of Sentinel-2 MSI

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Table 1. Main technical indicators of Sentinel-2 MSI

Sentinel-2 band	Wavelength/nm	Resolution/m	Swath width/km	Repeat cycle/d
B1（Coastal aerosol）	433-453	60	290	5
B2 （Blue）	458-523	10
B3 （Green）	543-578	10
B4 （Red）	650-680	10
B5 （Red edge）	698-713	20
B6 （Red edge）	733-748	20
B7 （Red edge）	773-793	20
B8 (NIR)	785-900	10
B8A（Narrow NIR）	855-875	20
B9 （Water vapor）	935-955	60
B10 （SWIR-cirrus）	1 360-1 390	60
B11 (SWIR-1)	1 565-1 655	20
B12 （SWIR-2）	2 100-2 280	20

Table 2. Correlation analysis between band combination and SDD

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Table 2. Correlation analysis between band combination and SDD

	SDD/m		SDD/m		SDD/m
B2/B1	0.019	B6/B2	−0.395	B7/B4	0.460
B3/B1	−0.264	B7/B2	−0.252	B8/B4	0.573
B4/B1	−0.739	B8/B2	−0.268	B6/B5	0.186
B5/B1	−0.621	B4/B3	−0.635	B7/B5	0.420
B6/B1	−0.492	B5/B3	−0.519	B8/B5	0.546
B7/B1	−0.312	B6/B3	−0.285	B7/B6	0.618
B8/B1	−0.346	B7/B3	−0.107	B8/B6	0.526
B3/B2	−0.399	B8/B3	−0.101	B8/B7	0.081
B4/B2	−0.718	B5/B4	0.155	B3×B4	−0.719
B5/B2	−0.584	B6/B4	0.237

Table 3. Correlation analysis between the logarithm of wave band combination and SDD
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Table 3. Correlation analysis between the logarithm of wave band combination and SDD
log(B4/B1) log(B4/B2) log(B3×B4) log(B4/B1)×log(B4/B2) log(B4/B1)×log(B4/B2)×log(B3×B4)
SDD/m −0.756 −0.740 −0.745 0.790 −0.798

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Lei Yang, Dingfeng Yu, Hao Gao, Xiaodong Bian, Xiaoyan Liu, Yingying Gai, Deyu An, Yan Zhou, Shilin Tang. Remote sensing retrieval of secchi disk depth in Jiaozhou Bay using Sentinel-2 MSI image[J]. Infrared and Laser Engineering, 2021, 50(12): 20210080

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