| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2010: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Research Abstract |
This study aims to apply a multiple tracer method using SF6and CFCs dating tracers and stable isotopes of oxygen and hydrogen (18O, 2H) to specify the groundwater flow pathswith developing the dating system. Applying the multiple tracer method to groundwater samples from springs and wells in many areas, our findings demonstrate the usefulness of our multiple tracer method as a tracer method for simultaneous separation and dating of groundwater flow paths in multi-groundwater flow system in water cycle. We found the new traceability of CFCs with over recorded values in groundwater in urban areas.
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