O механизме вторичного загрязнения озер

Abstract

When the beginning of the temperature gr adient is positioned below the sediment surface in the absence of convective motions in a temperature stratified water column, a thin overlaying layer of sediments becomes also a significant obstacle to heat flux. This, in turn, must lead to the strengthening of the temperature gradient followed by buoyancy of the interstitial liquids. In this case, buoyancy itself inducing upward motions of the pore water in creases thermal diffusivity of the surface sediments and allows the upward movement of the beginning of the temperature gradient.