| Project/Area Number |
11691168
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Obihiro University of Agriculture and Veterinary Medicine |
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Principal Investigator |
TSUCHIYA Fujio Obihiro University of Agr. and Vet., Professor, 畜産学部, 教授 (30003130)
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| Co-Investigator(Kenkyū-buntansha) |
MUNEOKA Toshimi Obihiro University of Agr. and Vet., Instructor, 畜産学部, 助手 (50301974)
MARUYAMA Junko Obihiro University of Agr. and Vet., Professor, 畜産学部, 教授 (00003137)
FUKUDA Masami Hokkaido Uni., Low Temp. Science Institute, Professor, 低温科学研究所, 教授 (70002160)
RYOKAI Kimitoshi Ltd. Chibatochi, Technical Adviser, 主任研究員
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1999: ¥3,300,000 (Direct Cost: ¥3,300,000)
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| Keywords | Permafrost / Heat Pipe / Forest Fire / Mongolia / Ground Freezing / Fire Weed / Global Warming |
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| Research Abstract |
We investigated serious disaster of 1996' forest fires and nearby the undistributed forest underlying permafrost, with three cooperators, Mongolian Scientific Academy. The soil, vegetation and topography were investigated and the soil cores were sampled from both sites. The heat pipe was varied in the sampling soil profiles to the depth of 170cm in order to freeze the ground using winter coldness. Next year we succeeded to collect the data of temperature from potable recorder at three places. It found that heat pipe operated to freeze the ground in the very low temperature in winter, but frozen soil was all thawed till the third decade of June. The permafrost was not maintained until the last of June except the deep depth under the heat pipe. This reason was seemed to be lack of soil moisture. In final year of 2001, the results showed a similar tendency from the measured temperature. From the two years' data, it is important to gather the soil moisture in the ground using the liter from trees and another vegetations If the chemical polymer like water absorbent is used for the surface soil, the effect of heat pipe is expected to be maximum for the control of ground freezing all over the years. Also, the frozen ground may be expanded from the position beneath the heat pipe from the two years' data.
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