Upwelling characteristics in the Peter the Great Bay in fall-winter season of 1999–2000

The intermediate water upwelling zone is discovered in November and December in the Peter the Great Bay (the Sea of Japan) on the basis of the data of the repeated hydrological section along 132° E. Taking account of the two-layer density field structure obtained from the observational data and applying the corresponding upwelling model 20], its main characteristics are computed. The upwelling zone width amounts to 6.2 km, the stratification destruction time is 69 h, and the vertical speed component is 4.3 × 10⁻² cm/s. The upwelling zone is clearly pronounced both at the temperature and salinity fields and at the biogenic element field.