PROPOSAL OF SIMPLE MEASUREMENT METHOD FOR EVAPORATIO RATE BY USING OXYGEN ISOTOPIC RATIO IN THE INAWASHIRO LAKE
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- MIYAJI Kazuha
- 和歌山大学システム工学部環境システム学科
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- OKADA Satoshi
- 和歌山大学大学院システム工学研究科
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- II Hiroyuki
- 和歌山大学システム工学部
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- NAGABAYASHI Hisao
- 日本大学工学部
Bibliographic Information
- Other Title
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- 酸素同位体比を利用した猪苗代湖における蒸発率の簡易測定法の提案
Abstract
Using oxygen isotopic ratio and humidity, a new simple method of measurement for an evaporation rate in a lake is proposed. The oxygen isotopic ratio of the Inawashiro Lake is thought to have increased from -10.3‰ to -9.3‰ estimating from river flow rates and lake and river oxygen isotopic ratios. As a result of some evaporation experiments, the relation between evaporation ratio, initial oxygen isotopic ratio and humid was analyzed and then the evaporation ratio in the Inawashiro Lake was estimated 5.6 % from the relation and oxygen isotopic ratios. The evaporation in the Inawashiro Lake is calculated about 560 mm per year from 5.6 % evaporation ratio, lake inflow and lake area and is in agreement with that estimated by Jacob equation.
Journal
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- PROCEEDINGS OF HYDRAULIC ENGINEERING
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PROCEEDINGS OF HYDRAULIC ENGINEERING 52 289-294, 2008
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390282680148049792
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- NII Article ID
- 130004044025
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- ISSN
- 18849172
- 09167374
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed