Observations of Ice Motion in the Marginal Siberian Seas.
1997
Morison, Jamie | Rigor, Ignatius
The presence of radionuclides. One advantage of linking the pollutants to sediment is that we can take advantage of existing work by arctic geological oceanographers, e.g., on uptake and transport processes. Sediment is incorporated into the newly forming ice cover by a process called suspension freezing. Individual ice crystals may first nucleate to the very fine grained sediment in the water column. Once formed, the ice crystals aggregate and effectively filter sediment as the flocked frazil ice moves through the water column. Further filtration is accomplished as turbid water percolates through the floating frazil ice cover. The observational evidence shows that almost all of the sediment found in first year ice is contained in the frazil layers. The uptake of pollutants into the ice depends on the presence of suspended particulate matter (SPM) in the water column.
显示更多 [+] 显示较少 [-]