caa a22 4500 445814578 CHVBK 20180317145222.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10040-010-0650-9 doi (NATIONALLICENCE)springer-10.1007/s10040-010-0650-9 Identifying the recharge sources and age of groundwater in the Songnen Plain (Northeast China) using environmental isotopes [Elektronische Daten] [Zongyu Chen, Wen Wei, Jun Liu, Ying Wang, Jiang Chen] Identification des aires de recharge et de l'âge des eaux souterraines dans la plaine de Songnen (Chine du Nord-Est) au moyen d'isotopes environnementaux The recharge sources and groundwater age in the Songnen Plain, Northeast China, were confirmed using environmental isotopes. The isotopic signatures of the unconfined aquifers in the southeast elevated plain and the north and west piedmont, cluster along local meteoric water lines (LMWLs) with a slope of about 5. The signature of source water was obtained by the intersection of these LMWLs with the regional meteoric water line (RMWL). This finding provides evidence that the recharge water for these areas originate from the Changbai Mountains and the Low and High Hingan Mountains, respectively. Groundwater in the unconfined aquifer in the low plain yields a LMWL with a slope of 4.4; its nitrate concentration indicates the admixture of irrigation return flow. The δ-values of the unconfined aquifer in the east elevated plain plot along the RMWL, reflecting recharge by local precipitation. The mean residence time of groundwater in these aquifers is less than 50years. However, the 14C age of the groundwater in the confined Quaternary aquifer ranges from modern to 19,500years, and in the Tertiary confined aquifer from 3,100 to 24,900years. Modern groundwater is mainly recharged to the Quaternary confined aquifer on the piedmont by local precipitation and lateral subsurface flow. Springer-Verlag, 2010 Semi-arid region nationallicence Stable isotopes nationallicence Radioactive isotopes nationallicence Recharge sources nationallicence China nationallicence Chen Zongyu Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut Wei Wen Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut Liu Jun Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut Wang Ying Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut Chen Jiang Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut Hydrogeology Journal Springer-Verlag 19/1(2011-02-01), 163-176 1431-2174 19:1<163 2011 19 10040 https://doi.org/10.1007/s10040-010-0650-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-010-0650-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Zongyu Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut NATIONALLICENCE 700 1- Wei Wen Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut NATIONALLICENCE 700 1- Liu Jun Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut NATIONALLICENCE 700 1- Wang Ying Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut NATIONALLICENCE 700 1- Chen Jiang Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Zhongshan Donglu No.92, 050803, Zhengding, Hebei, People's Republic of China aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/1(2011-02-01), 163-176 1431-2174 19:1<163 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer