珲春盆地浅层地下水年龄和其水循环特征.pdf

Advances in Geosciences 地球科学前沿, 2017, 7(1), 50-57 Published Online February 2017 in Hans. /journal/ag /10.12677/ag.2017.71006 The Age and Water Cycle of Shallow Groundwater in Hunchun Basin Xufei Shi, Haiqing Zhao Shenyang Center of Geological Survey, CGS, Shenyang Liaoning th th th Received: Feb. 5 , 2017; accepted: Feb. 24 , 2017; published: Feb. 27 , 2017 Abstract The 3H method is applied to determine the age of shallow groundwater in Hunchun basin, which provides basis for the study of groundwater resource management and carrying capacity in Hun- chun basin. It can be concluded that the age of the shallow groundwater in Hunchun basin is younger than 30 a in general and the groundwater cycle is fast. The age of shallow groundwater increases from less than 10 a to more than 20 a from the piedmont to the Hunchun River valley and from the northeast to the southwest. The groundwater distribution area, with age less than 10 a, between 10~20 and more than 20 a, accounts for 39%, 10% and 51% of the total area of Hunchun basin. The groundwater age of Qihudong village, Pingan village, Heping village which are shallow groundwater recharge area is less than 10 a, which means the groundwater circulation is fastest. The groundwater age of Zhonghua village, Tulu village, Chunjing village which are shallow groundwater runoff area is 10 ~ 20 a, which means the groundwater circulation is slower than the recharge area. The groundwater age of Baer village, Gucheng village which are shallow groundwater discharge area is more than 20 a, which means the groundwater circulation is slower than the recharge area and runoff area. Keywords Tritium, Groundwater Age, Groundwater Cycle, Hunchun Basin