TH-234 IN THE KARSKOYE SEA-WATER

Th-234 content in water and suspended matter of the Karskoye sea. Meth ods of extraction and measurement of Th-234 concentration is described . 9 samples of the surface water and columns at two stations are analy sed. Average transition time of Th-234 from the soluble state to the s uspended form, residence time of suspended Th-234 and Th-234 flux in b ottom sediments are calculated. The latter parameter in surface water was found to be substantially controlled by the salinity. The dominant contribution to the integral flux is concerned with the water mass ne ar the layer of shift, the latter being the region of zooplankton accu mulation.