Volume and heat transports and material fluxes in the East China Sea during April 1994 |
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| Authors: | Yuan Yaochu Pan Ziqin Wang Huiqun Hu Dunxin Guan Weibing Xu Weiyi and Cui Maochang |
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| Institution: | 1.Second Institute of Oceanography, State Oceanic Administration, 9 Xixihexia, Hangzhou 310012, China2.Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China |
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| Abstract: | A modified inverse method is used to compute the volume transport(VT),the heat transport (HT) and the horizontal material fluxes in the East China Sea with data of CTD,TCO2,DOC,POC,etc.obtained in April 1994.In April 1994 VT and HTthrough Section PN in the East China Sea are 30.6×106 m3/s and 2.42×1015 W respectively,and the horizontal fluxes of TCO2,DOC and POC through Section PN are 65×106,2.2×106 and 0.17×106 mol/s respectively.This means that the percentages of fluxes of TCO2,DOC and POC in total C flux are about 96.5%,3.3% and 0.2% respectively.VT and HT through Section S5(near the Tokara Strait) are 26.7×106m3/s and 2.14×1015W respectively,which are about 87% and 88% of VT and HT through Section PN respectively.The horizontal flux of TCO2 through Section S5is 61×106 rnol/s,which is about 93.8% of the flux of TCO2 through Section PN,i.e.,its percentage is close to that of VT and HT of Sections S5 and PN.The horizontal fluxes of DOC and POC through Section S5 are 2.5×106 and 0.08×106 mol/s respectively.The sum of the horizontal influx and outflux of TCO2 through the boundaries of Box-2 is about -2×106 mol/s (outflux),which is about 3% of the flux of TCO2 through Section PN.This value is the same order of magnitude of the vertical flux caused by the downwelling or the upwelling.This means that the horizontal flux of TCO2 must be considered,when the vertical flux of TCO2 is computed,and so are the other material vertical fluxes (DOC,etc.).Finally,the vertical velocity component is computed with a diagnostic model. |
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| Keywords: | Transports material fluxes East China Sea |
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