1999 Fiscal Year Final Research Report Summary
Use of stable isotopes of water for water cycle study
| Project/Area Number |
10680500
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
SUGIMOTO Atsuko Kyoto Univ. Ceter for Ecological Research, Assoc. Prof., 生態学研究センター, 助教授 (50235892)
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| Co-Investigator(Kenkyū-buntansha) |
NUMAGUTI Atsusi Hokkaido Univ. Gard. Shool of Eniviron. Earth Sci., Assoc. Prof., 大学院・地球環境科学研究科, 助教授 (30237797)
YAMANAKA Manabu Kobe Univ. Grad Shool of Science and Technology, Prof., 大学院・自然科学, 教授 (30183982)
OHTE Nobuto Kyoto Univ. Grad. School of Agriculture, Assic. Prof., 農学研究科, 助教授 (10233199)
KAIHOTSU Ichiro Hiroshima Univ. Fuculty of Integrated Arts and Sci. Prof., 総合科学部, 教授 (60160959)
OHATA Testsuo Hokkaido Univ. Inst. of Low Temperature, Prof., 低温科学研究所, 教授 (90152230)
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| Project Period (FY) |
1998 – 1999
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| Keywords | water cycle / isotopic composition of water / Sibcria / Tibet / groundwater |
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| Research Abstract |
1) Hydorologycal Research in Kiryu watershed
Stable isotopic compositions of water were measured for precipitation, soil water, groundwater, water in plants, spring water and stream water taken in Kiryu watershed (Otsu, Shiga Prefecture). From those data, information on the charge and discharge processes of groundwater were obtained.
2) Network on precipitation sampling in Siberia, Tibet and SE Asia
Sampling network was discussed for better understanding of water cycle. Precipitation samplings have been started at several sites in Siberia and Tibet. Sampling interval is important for obtaining the information with various time and spatial information. Data with short interval (5 to 10min) include the information on precipitation process in or around clouds. Daily data have information on the precipitation process and also origin of water vapor.
3) Isotope model derived into atmospheric general circulation model was improved. Simulated results on the vertical profile of isotopic composition of water vapor was interestingly different from what has been believed.
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