Impact of natural and local anthropogenic SF6 sources on dating springs and groundwater using SF6 in central Japan
Impact of natural and local anthropogenic SF6 sources on dating springs and groundwater using SF6 in central Japan
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自然和当地人为 SF6 来源对日本中部使用 SF6 测定泉水和地下水的影响
DOI：
10.3178/hrl.5.42
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发表时间：
2011
影响因子：
1.1
通讯作者：
H. Satake
中科院分区：
文献类型：
--
作者：
K. Asai;M. Tsujimura;W. Fantong;H. Satake
在日本中部中部地区的泉水和地下水中的六氟化硫（SF6）浓度进行了测量，以评估自然和当地人为SF6的影响和SF6的有效性，以确定年轻的地下水在日本。取样的水显示SF6的可检测浓度为0.21-125 fmol/L。大多数山泉的SF6浓度是由北方清洁的环境空气溶解而产生的。在较小的集水区（< 0.5平方公里），山区泉水基于SF6的表观年龄估计不到6年，在第四纪火山上的较大集水区，年龄范围从4年到32年不等。山泉的SF6年龄与地下水流的规模和以前确定的3 H年龄在日本类似的设置地下水是一致的，这表明天然SF6在地下水中的负载是相对较小的山区。在平原，当地的工业活动导致高浓度的SF6在一些分析的地下水。结果表明，SF6可以是一个有效的定年工具，年轻的地下水在日本，当和当地人为SF6的输入可以忽略不计。
Sulfur hexafluoride (SF6) concentrations in springs and groundwater were measured in the Chubu region of central Japan to evaluate the impact of natural and local anthropogenic SF6 and the validity of SF6 for dating young groundwater in Japan. Sampled water showed detectable concentrations of SF6 at 0.21–125 f mol/L. Most of the mountain springs have SF6 concentration assumed by the dissolution of the clean ambient air in Northern hemisphere. The SF6-based apparent ages for the mountainous springs were estimated at less than 6 years in smaller catchment areas (< 0.5 km2), and ranged from 4 to 32 years in the larger catchment areas located on the Quaternary volcanoes. The SF6 ages for mountain springs were consistent with the scale of groundwater flow and with previously determined 3H ages for groundwater in similar settings in Japan, suggesting the loading of natural SF6 in the groundwater is relatively small in the mountainous areas. In the plains, local industrial activities led to high concentrations of SF6 in some of the analyzed groundwater. The results suggest SF6 can be an effective dating tool for young groundwater in Japan, when and where the input of local anthropogenic SF6 is negligible.
地下水平均停留时间的估算 日本小型水源流域地下水平均停留时间
DOI：
--
发表时间：
2006
期刊：
Hydrological Processes 21
影响因子：
--
作者：
Kabeya;N.;Katsuyama;M.;Kawasaki;M.;Ohte,N. and Sugimoto;A.
通讯作者：
A.