Preliminary study of concentration distribution of total particulate phosphorus in estuary by remote sensing technology

ZHANG Xiao-yu; LIN Yi-an; TANG Ren-you; PAN De-lu; WANG Di-feng; GONG Fang

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ZHANG Xiao-yu, LIN Yi-an, TANG Ren-you, PAN De-lu, WANG Di-feng, GONG Fang. Preliminary study of concentration distribution of total particulate phosphorus in estuary by remote sensing technology[J]. Haiyang Xuebao, 2005, 27(1): 51-56.

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Preliminary study of concentration distribution of total particulate phosphorus in estuary by remote sensing technology

1.
Key Laboratory of Ocean Dynamic Process and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China;Department of Science of Earth, Zhejiang University, Hangzhou 310012, China
2.
Key Laboratory of Ocean Dynamic Process and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China

Received Date: 2003-09-04
Rev Recd Date: 2004-07-28

Abstract

Abstract

The SeaWiFS loaded on SEASTAR is used as remote sensing data source.With the in-situ data of suspended sedmient concentration (SSC) and total particulate phosphorus(TPP),and inverse regression equation,which suggests the exponential relationship between in-situ suspended sedmient concentration data and in-situ radiance data,is employed:y_SSC=0.382 6exp[4.9748(R₆₇₀/R₅₅₅)],r² =0.9179.Meanwhile the concentration of particulate phosphorus can be obtained by the following algorithm:y_TPP=0.0076_xSSC+0.1599,r²=0.720.So the distributive characteristics of suspended sedmients and particulate phosphorus in the Changjiang River Estuary and nearshore were retrived through satelite data.The result suggests that (1) the retrieved concentration distribution accords with the ground trouth,and reflects the actual transport path of ocean current to some extent;(2) the concentration of TPP declines gradually from inshore to offshore;and (3) the a lgorithm is only applicable for Case Ⅱ water,not for Case Ⅰ water.
- Changjiang Estuary,
- SeaWiFS,
- moldel,
- suspended sedmient,
- total particulate phosphorus

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