Horizontal Temperature Distribution and Impact Factors of Shallow Groundwater in South Xin'an Town

The shallow groundwater level and temperature in South Xin'an Town of Inner Mongolia were measured,the horizontal distribution laws of the groundwater flow field as well as the surface and average temperature in thermocline groundwater were analyzed,and the influence mechanism of groundwater flow on groundwater temperature was discussed.As indicated by the results,the horizontal groundwater runoff from west to east determined the general temperature decrease from west to east in the study area,the low groundwater temperature in northeast was resulted from horizontal flow from north to south,the high groundwater temperature in the middle area was resulted from the vertical flow from bottom to up.In addition,this distribution pattern was also influenced by solar radiation,but the influence degree was determined by the mineralization of groundwater,the higher the mineralization,the higher the groundwater temperature,the groundwater temperature was also influenced by depth,it decreased with the increasing depth.