THERMOHALINE FINESTRUCTURE AND ITS RELATION WITH THE WATER MASSES AND CURRENTS SYSTEM IN THE NORTHERN EAST CHINA SEA

Eighy-one CTD profiles gathered in springtime were used for northem East China Sea tbermohalinefinestructure studies indicating that the finestructure properties vaned with region and depth, as shown infinesructure specra, distribution of Cox numbers etc..Some results closely wiated to distribution of watermasses and Analysis of two typical profiles revealed differenes in autospectra of temperature,salihity and potential density gradients, probobility distribution of temperature finestructure gradient,Cox numberc.etc. The probability density function of vertical temperature gradients, which varied withsample interval, is given. The variances of temperatare finestructare gradient are used to estimate the lat-eral diffusivity and lateral temperatare flux, which were 10.3 （m2/s） and 5.5×10-4 （℃ m/s）,respectivly.

Eighty-one CTD profiles gathered in springtime were used for northern East China Sea thermohaline finestructure studies indicating that the finestructure properties varied with region and depth, as shown in finestructure spectra, distribution of Cox numbers, etc.. Some results closely related to distribution of water masses and currents. Analysis of two typical profiles revealed differences in autospectra of temperature, salinity and potential density gradients, probability distribution of temperature finestructure gradient, Cox numbers, etc.. The probability density function of vertical temperature gradients, which varied with sample interval, is given. The variances of temperature finestructure gradient are used to estimate the lateral diffusivity (AT) and lateral temperature flux, which were 10.3 (m2/s) and 5.5×10-4 (℃m/s), respectively.