| 河北平原地下水氦氩同位素特征 |
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| 关键词:helium isotope argon isotope groundwater Hebei plain |
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| Helium and Argon Isotope Characteristics of Groundwater in Hebei Plain |
| In this paper, the helium and grgon isotopes of groundwater in Hebei plain are analyzed. According to "excess helium"(4He exc),3He/4He ratios, δ3He value, 38Ar/36Ar and 40Ar/36Ar ratios, the helium and grgon isotopes of groundwater in Hebei plain show seven characteristics:①The concentrations of "excess helium" in groundwater increase in the flow diroction of groundwater;②The concentrations of "excess helium" in groundwater increase with the depth of groundwater;③The concentrations of "excess helium" of the hydrogeological profiles in Mancheng-Cangzhou are higher than those in Shijiazhuang-Hengshui;④The groundwater in Hebei plain is recharged from the precipitations.⑤The thermal groundwater in Hengshui shows higher concentration of "excess heli-un(674.83×10-8cm3 STPg-1)".⑥The 36Ar/38Ar ration of groundwater is 5.37m which approximates to the value of air over the earth (5.35).⑦40Ar/36Ar ratios of groundwater are from 296 to 412, which are highrer than the 40Ar/36Ar ration of air grgon over the earth (=295.6).It is shown that 40Ar in groundwater is radiogenic and that 40Ar/has "the effect of age accumulation". |
| LIU Cunfu,CHAO Nianying,WANG Peiyi,GAN Yiqun,LI Yanhe,SONG Hebin.2005.Helium and Argon Isotope Characteristics of Groundwater in Hebei Plain[J].Acta Geoscientica Sinica,26(z1):268-271. |
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