Runoff Analysis by Means of Multiple Isotope Tracers in Iwami River Drainage,Akita,Japan (軽元素同位体比測定<特集>)

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概要

• 論文の詳細を見る

• By means of three isotope tracer techniques, proportion of direct runoff and characters of groundwater runoff were studied in the Iwami River drainage during a high runoff period for about 3 days, caused by a heavy rainfall of 85 mm for 17 hours. The proportion of direct runoff is 15% or less of the total runoff caused by the rainfall, while 65% of river water at the peak of runoff. Differences observed in the runoff manners among 18O, 2H, and 3H are interpreted as a result of preferential runoff of previous precipitations stored in some unsaturated zone above the saturated groundwater zone. Cl- content is not conservative as a tracer to study runoff mechanisms.

• 日本質量分析学会の論文

著者

• MATSUBAYA Osamu

  Research Institute of Underground Resources, Mining College, Akita University

• Yoshida Minako

  Research Institute of Natural Resources, Mining College, Akita University

• Tanaka-Miyamoto Kiriko

  Division of Environmental Health, National Institute of Radiological Sciences

• Matsubaya Osamu

  Research Institute Of Materials And Resources Faculty Of Engineering And Resource Science Akita Univ

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