| Presentation | 2017-06-23 Measurement on Complex Permittivity of Hydrated Soil, Live and Dead Leaves, Woods, and Stones for Landslides Prognostication Kousei Kumahara, Kengo Nakajima, Futoshi Kuroki, Masanori Eguchi, Takeshi Yamakawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Complex permittivity of hydrated soil contained in lands was measured as a function of the water volume content for land-slides prognostication from low frequency (LF) to medium frequency (MF) bands. The main emphasis is placed on a simple test equipment, which consists of top and bottom electrodes in a plastic cylinder for filling some solutions. From the results, it was obvious that the loss tangent was larger than those of the soil and water themselves due to the ionization. In addition, the complex permittivities of live and dead leaves, woods, and stones existing the surface of the lands were also measured by using the test equipment to estimate the effective permittivity of the forest. The evaluation of the complex permittivities was successfully performed by using the test equipment from very low frequency to medium frequency bands. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Medium frequency / Low frequency / Measurement of complex permittivity / Landslides prognostication |
| Paper # | MW2017-26 |
| Date of Issue | 2017-06-15 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2017/6/22(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | A-101, Wing-A, Toyohashi University of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Signal Generation and Measurement / Microwave Technologies |
| Chair | Masahiro Muraguchi(TUC) |
| Vice Chair | Yoshinori Kogami(Utsunomiya Univ.) / Hiroshi Okazaki(NTTdocomo) / Kenichi Tajima(Mitsubishi Electric) |
| Secretary | Yoshinori Kogami(Tokyo Inst. of Tech.) / Hiroshi Okazaki(HITACHI) / Kenichi Tajima |
| Assistant | Satoshi Ono(Univ. of Electro-Comm.) / Mizuki Motoyoshi(Tohoku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Measurement on Complex Permittivity of Hydrated Soil, Live and Dead Leaves, Woods, and Stones for Landslides Prognostication |
| Sub Title (in English) | |
| Keyword(1) | Medium frequency |
| Keyword(2) | Low frequency |
| Keyword(3) | Measurement of complex permittivity |
| Keyword(4) | Landslides prognostication |
| 1st Author's Name | Kousei Kumahara |
| 1st Author's Affiliation | National Institute of Technology(NIT,Kure College) |
| 2nd Author's Name | Kengo Nakajima |
| 2nd Author's Affiliation | National Institute of Technology(NIT,Kure College) |
| 3rd Author's Name | Futoshi Kuroki |
| 3rd Author's Affiliation | National Institute of Technology(NIT,Kure College) |
| 4th Author's Name | Masanori Eguchi |
| 4th Author's Affiliation | Fuzzy Logic Systems Institute(FLSI) |
| 5th Author's Name | Takeshi Yamakawa |
| 5th Author's Affiliation | Fuzzy Logic Systems Institute(FLSI) |
| Date | 2017-06-23 |
| Paper # | MW2017-26 |
| Volume (vol) | vol.117 |
| Number (no) | MW-104 |
| Page | pp.pp.25-30(MW), |
| #Pages | 6 |
| Date of Issue | 2017-06-15 (MW) |