Modeling of rainfall-runoff and solute transport processes in headwater catchments using multi-tracer approach.
| Project/Area Number |
17540409
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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 |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | University of Tsukuba |
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Principal Investigator |
TSUJIMURA Maki University of Tsukuba, Graduate School of Life and Environmental Sciences, Associate professor (10273301)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMADA Jun Kumamoto University, Faculty of Science, professor (80206169)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Rainfall-Runoff / Bedrock Groundwater / Dating of groundwater / Isotope Tracer |
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| Research Abstract |
The purpose of this research is to model the hydrological processes in a small catchment underlain by volcanic rock approached by multi-tracer technique using ^2H, ^<18>O, CFCs and inorganic constituents. Especially, the present study focused on establishment of analytical and modeling scheme to evaluate the age of groundwater and spring water using CFCs as a tracer.
The analytical system including a preparation line and gas chromatograph with ECD was established, and evaluation of analytical error was completed. The discharge in the springs and the groundwater level in the boreholes were monitored, and the spring water and the groundwater were sampled in January, July and November 2007. The intercomparison among piston flow model, dispersion model and exponential model was performed to discuss the age of spring and ground waters in the catchment.
The concentration of CFCs in the spring and ground waters showed a higher value in the upper stream region and a lower value in the mid -streamregion throughout the seasons. The piston and dispersion models produced good results of age in the upper stream region, and the exponential model showed the best performance for the dating in the mid-stream region. The ages of spring and ground waters ranged from 10 to 20 years in the upper stream region, 15 to 40 years in the mid-stream region, and 30 to 70 years in the coastal (down stream) region. The estimated groundwater flow system by these models agreed well with the spatial distribution of observed hydraulic head and solute concentration in the groundwater.
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] Temporal variation of δ^<13>C of larch leaves from a montane boreal forest in Mongolia2007
Author(s)
Li, S. G., Tsujimura, M., Sugimoto, A., Davaa, G., Oyunbaatar, D., Sugita,M.
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Journal Title
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Water sources in semi-arid Northeast Asia as revealed by field observations and isotope transport model2007
Author(s)
Sato, T., Tsujimura, M., Yamanaka, T., Iwasaki, H., Sugimoto, A., Sugita, M., Kimura, F., Davaa, G., and Oyunbaatar, D.
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Journal Title
Journal of Geophysical Research 112
NAID
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Stable isotopic and geochemical characteristics of groundwater in Kherlen River basin, a semi-arid region in eastern Mongolia2007
Author(s)
Tsujimura, M., Abe, Y., Tanaka, T., Shimada, J., Higuchi, S., Yamanaka, T., Davaa, G. and Oyunbaatar, D.
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Journal Title
Journal of Hydrology 333
Pages: 47-57
NAID
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Stable isotopic and geochemical characteristics of groundwater in Kherlen River basin, a semi-arid region in eastern Mongolia.2007
Author(s)
Tsujimura, M., Abe, Y., Tanaka, T., Shimada, J., Higuchi, S., Yamanaka, T., Davaa, G., Oyunbaatar, D.
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Journal Title
Journal of Hydrology 333
Pages: 47-57
NAID
Related Report
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[Journal Article] Determining the criteria rainfall for debris flow warning and evacuation by rainfall-runoff response2006
Author(s)
Onda, Y., Tsujimura, M., Tanaka, T., Sasaki, K., Mizuyama, T., Uchida, T., Tainaka, O., Tanaka, H.,
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Journal Title
Journal of the Japan Society of Erosion Control Engineering 58-5
Pages: 13-17
NAID
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Seasonal variation in oxygen isotope composition of waters for a montane larch forest in Mongolia2006
Author(s)
Li, S. G., Tsujimura, M., Sugimoto, A., Sasaki, L., Yamanaka, T., Davaa, G., Oyunbaatar, D. and Sugita, M.
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Journal Title
Trees 20-1
Pages: 122-130
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Seasonal variation in oxygen isotope composition of waters for a montane larch forest in Mongolia.2005
Author(s)
Li, S.G., Tsujimura, M., Sugimoto, A., Sasaki, L., Yamanaka, T., Davaa, G., Oyunbaatar, D., Sugita, M.
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Journal Title
Related Report
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