01937nam a2200157 a 450000100080000000500110000800800410001910000170006024500690007726000420014630000100018850000180019852015450021665000090176165000090177013315742002-11-22       1968    bl uuuu  m   00u1 u    #d1 aRAMOS, A. D.  aStudy of soil temperature parameters as affected by site aspect.  aDavis: University of Californiac1968  a124p.  aM.Sc. Thesis.  aA study was done on the Davis Campus of the University of California in Yolo Country, in order to assess the effects of slope aspect on soil temperature. Continuous soil temperature measurments were made at 10 and 50 cm depths for nearly one year beginning in Oct. 1976. Five soil sites were chosen: a level site, southwest, southeast, northeast, and northwest aspects. The results showed that soil temperatures at both depths followed certain patterns as affected by surface exposure to the solar radiation. These patterns of the soil temperature were linked to the energy balance characteristic of a give site. The observed 10 cm depth temperatures were primarily influenced by southerly versus northerly exposure effects, with the mean annual temperature at this depth being higher at the southwest and southeast aspects, intermediate at the level site, and decreasing on the northerly aspects, the lowest mean being on the northwest-facing site. On a seasonal basis the pattern changed, the southwest aspect became the warmest site in the fall, and this aspect and the level site with nearly the same temperature, were the warmest sites in winter time. The 50 cm depth temperatures were dominantly affected by easterly and westerly components of aspects so that the easterly aspects had warmer mean annual soil temperatures than the level site. The latter had a higher mean than both westerly aspects. A secondary effect of southerly versus northerly exposures made the southerly aspects warmer than the northerly ones..................  asoil  aSolo