EFFECT OF SNOW COVER ON UPWARD MOVEMENT OF SOIL MOISTURE

The soil moisture in the ground beneath a snow cover in the north central United States has been observed to increase during the winter season. The maximum prethaw soil moisture frequently is observed immediately prior to the onset of the spring melt. During the one day period after the snow cover is removed, traffic has been observed to create especially deep ruts, even on dirt roads where motor traffic has little difficulty on days with heavy rain. A primary mechanism producing the increase is the upward movement of moisture in both liquid and vapor phase which may occur with or without the presence of frozen conditions when induced by a temperature gradient. The importance of this phenomenon in relation to forecasting the snowmelt runoff during the critical spring period is examined.

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00265437
  • Record Type: Publication
  • Report/Paper Numbers: Proc. Paper 10989
  • Files: TRIS
  • Created Date: Feb 11 1975 12:00AM