Accession Number : ADA322448

Title :   Observations of Ice Motion in the Marginal Siberian Seas.

Descriptive Note : Final rept.,

Corporate Author : WASHINGTON UNIV SEATTLE POLAR SCIENCE CENTER

Personal Author(s) : Morison, Jamie ; Rigor, Ignatius

PDF Url : ADA322448

Report Date : SEP 1996

Pagination or Media Count : 5

Abstract : 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.

Descriptors :   *WATER POLLUTION, *ICE, *RADIOACTIVE ISOTOPES, *OCEANOGRAPHERS, *ARCTIC REGIONS, *NUCLIDES, WATER, MOTION, CRYSTALS, GEOLOGY, TRANSPORT PROPERTIES, AGGREGATES(MATERIALS), FREEZING, POLLUTANTS, COVERINGS, FILTERS, SUSPENSION DEVICES, SEDIMENTS, FINE GRAINED MATERIALS, FLOATING BODIES, TURBIDITY.

Subject Categories : Atmospheric Physics
      Meteorology
      Biological Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE