Dette nettstedet oppdateres ikke lengre. Du ser nå en arkivert versjon. This website is no longer being updated. You are viewing an archived version.

Fortsett til innholdet. | Gå til navigasjonen

Norwegian-American Scientific Traverse of East Antarctica

Side-alternativer

Physical Properties

Investigation of snow and firn physical properties, by Dartmouth College.


Science ObjectivesSnow layering

  • Determine relationships between snow & firn properties and accumulation rate as the physical basis for large-scale mapping accumulation rate, and controlling actors for air-snow transfer.
  • Determine convective zone depths for various accumulation rates, and impact of convection on chemical and isotopic composition.

The image shows a slice of snow from a snow pit (backlit)
showing layering of snow and firn
.




MethodsSnow

  • Measure snow & firn stratigraphy, permeability, thermal conductivity, density, and microstructure.
  • Compare physical characteristics with high frequency radar measurements and with chemical and isotopic measurements.
  • Modeling for air-snow transfer and convective zone extent.




Personlige verktøy