Record Display for the EPA National Library Catalog


Main Title Snow Cover and Winter Soil Temperatures at St. Paul, Minnesota.
Author Bake, Donald G. ;
CORP Author Minnesota Univ., Minneapolis. Water Resources Research Center.
Year Published 1971
Report Number WRRC-Bull-37; DI-14-01-0001-844; OWRR-B-005-MINN; 12319,; B-005-MINN(3)
Stock Number PB-202 625
Additional Subjects ( Soils ; Temperature measurement) ; ( Snow cover ; Minnesota) ; Soil water ; Freezing ; Isotherms ; Thermocouples ; Thermodynamic properties ; Winter ; Frost ; Vegetation ; St Paul(Minnesota) ; Soil freezing depth ; Soil thermal conditions ; Degree days
Library Call Number Additional Info Location Last
NTIS  PB-202 625 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 31p
The objectives of the study of winter soil temperatures under a sod cover were to show the configuration of the soil isotherm patterns, in particular that of 0C, and to determine which soil thermal characteristics can be estimated by the snow cover. The temperature data were obtained at the University of Minnesota Agricultural Experiment Station plots on the St. Paul Campus with copper-constantan thermocouples during the winters of 1961-62 through 1968-69. Based upon the depth and persistence of the snow cover there were in effect 3 kinds of winters: one with deep and persistent snow cover, one with very little snow cover and all other winters. There was a close relationship between the kinds of winters and the maximum depth to which the 0C isotherm penetrated, and a fair relationship to the rate of movement of the 0C isotherm into the soil. The combination of type of winter (snow depth and duration) with cumulative heating degree days proved to be a simple and effective means of predicting the maximum freezing depth. (Author)