The theory analysis and observational validation for the separation of water and substance’s long-term transport Ⅰ.The theory analysis for the separation of water and substance’s long-term transport

ZHU Shou-xian; DING Ping-xing; SHA Wen-yu; ZHANG Wen-jing

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ZHU Shou-xian, DING Ping-xing, SHA Wen-yu, ZHANG Wen-jing. The theory analysis and observational validation for the separation of water and substance’s long-term transport Ⅰ.The theory analysis for the separation of water and substance’s long-term transport[J]. Haiyang Xuebao, 2008, 30(6): 24-29.

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The theory analysis and observational validation for the separation of water and substance’s long-term transport Ⅰ.The theory analysis for the separation of water and substance’s long-term transport

1.
College of Ocean Engineering, Hohai University, Nangjing 210098, China
2.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 20062, China
3.
Meterology Institute of Pepole's Liberation Army Science and Engineering University, Nanjing 211101, China
4.
Meterology Institute of Pepole's Liberation Army Science and Engineering University, Nanjing 211101, China;College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2008-02-03
Rev Recd Date: 2008-08-05

Abstract

Abstract

Based on the tide-averaged convection flux of water and substance at unit length vertical section, 2-D water and substances long-term transport velocity is defined, which describe the water and substances long-term transport direction and speed at unit length vertical section.2-D water and substances long-term transport velocity can also introduce the separation of water and substances long-term transport, namely in the case that substances convection velocity is as same as waters at every tide phase, their tide-averaged convection velocity may be different in direction and speed because of substance concentrations impact.2-D substances long-term transport velocity is decomposed as 2-D waters long-term transport velocity, 2-D tide pumping transport velocity and vertical shear transport velocity, which describe the substances long-term transport from residual current transport, tide pumping transport and vertical shear transpor trespectively.Tide pumping transport and vertical shear transport result in the difference of water and substances long-term transport at unit length vertical section.In estuary, the topographty, river flux, tidal current and density grads make favorable entironment for the separation of water and substances long-term transport.
- estuary,
- the substances long-term transport,
- the waters long-term transport,
- separation study

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References(17)

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