Research on observing suspended sediment concentration using ADCP and LISST-100 instruments

YUAN Ye; ZHAO Liang; WEI Hao; JIANG Wen-sheng

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YUAN Ye, ZHAO Liang, WEI Hao, JIANG Wen-sheng. Research on observing suspended sediment concentration using ADCP and LISST-100 instruments[J]. Haiyang Xuebao, 2008, 30(3): 48-55.

Citation:

YUAN Ye, ZHAO Liang, WEI Hao, JIANG Wen-sheng. Research on observing suspended sediment concentration using ADCP and LISST-100 instruments[J]. Haiyang Xuebao, 2008, 30(3): 48-55.

YUAN Ye, ZHAO Liang, WEI Hao, JIANG Wen-sheng. Research on observing suspended sediment concentration using ADCP and LISST-100 instruments[J]. Haiyang Xuebao, 2008, 30(3): 48-55.

Citation:

YUAN Ye, ZHAO Liang, WEI Hao, JIANG Wen-sheng. Research on observing suspended sediment concentration using ADCP and LISST-100 instruments[J]. Haiyang Xuebao, 2008, 30(3): 48-55.

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Research on observing suspended sediment concentration using ADCP and LISST-100 instruments

Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China

Received Date: 2007-01-03
Rev Recd Date: 2007-11-21

Abstract

Abstract

To determine the feasibility obtained by acoustic Doppler current profiler(ADCP) for estimating suspended sediment concent ration(SSC) in the coastal sea,a field experiment was designed and carried out in the Huanghe Estuary.An acoustic model was set up to estimate the concent ration of suspended particulate matter(SPM) from ADCP echo intensity,which accounted not only for the at tenuation caused by seawater and SPM,but also the corrections of non-spherical spreading in the transducer near-field and inst rument status.If the particle size distribution(P SD) remains stable during the observation,the acousticetimates of SSC agree well with bottle samples and the LISST-100 measurement.On the basis of the Rayleigh scat tering theory,an improved calibration equation is used in the model for particle size correction.Detailed discussions on PSD indicated that large size variation would make the result suspect able,and the exist ence of large particles would overest imate the SPM concentration.
- ADCP,
- L ISST-100,
- echo intensity,
- volume backscatter strength,
- particle size

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References(21)

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