Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1995-09-01 |
タイトル |
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タイトル |
MEASUREMENT OF DIELECTRIC LOSS OF ICE Ih AT MICROWAVE FREQUENCIES WITH CAVITY RESONATOR |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00003889 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
記事種別(英) |
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en |
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ABSTRACT |
論文名よみ |
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その他のタイトル |
MEASUREMENT OF DIELECTRIC LOSS OF ICE Ih AT MICROWAVE FREQUENCIES WITH CAVITY RESONATOR |
著者名よみ |
マツオカ, タケシ
フジタ, シュウジ
モリシマ, シゲノリ
マエ, シンジ
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著者名(英) |
MATSUOKA, Takeshi
FUJITA, Shuji
MORISHIMA, Shigenori
MAE, Shinji
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著者所属(英) |
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en |
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Department of Applied Physics, Faculty of Engineering, Hokkaido University |
著者所属(英) |
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en |
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Department of Applied Physics, Faculty of Engineering, Hokkaido University |
著者所属(英) |
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en |
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Department of Applied Physics, Faculty of Engineering, Hokkaido University |
著者所属(英) |
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en |
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Department of Applied Physics, Faculty of Engineering, Hokkaido University |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
The relative complex dielectric permittivity (ε^*=ε′-iε″) of ice Ih was measured at 5GHz and 10GHz by the cavity resonator method in the temperature range -60℃ to -3℃. The purpose of this study was to clarify the temperature dependence and frequency dependence of dielectric loss (tanδ=ε″/ε′) of ice at microwave frequencies. Because the values of dielectric loss of ice strongly contribute to the penetration depth of microwaves in ice, investigation of the dielectric loss of ice is important for analysis of microwave remote sensing data of the cryosphere. The cavity resonator method is suitable for low loss materials such as ice. Ice samples were polycrystalline and made from distilled and deionized water. The experimental results were as follows : The values of dielectric loss increased as the temperature increased. The values were 1.0∿2.2×(10)^<-4> at 10GHz and 0.6∿1.4×(10)^<-4> at 5GHz in the temperature range -60℃ to -3℃. The gradients of dielectric loss versus temperature (dtanδ/dT) also increased as the temperature increased. The values of penetration depth in ice at 5GHz and 10GHz were about 80m and 14m at -60℃, 35m and 10m at -3℃, respectively. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10756213 |
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
巻 9,
p. 180,
発行日 1995-09
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出版者 |
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出版者 |
National Institute of Polar Research |