Mae Shinji

ID:9000002205634

Department of Applied Physics, Faculty of Engineering, Hokkaido University (1997年 CiNii収録論文より)

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Articles:  1-19 of 19

  • DIELECTRIC PROPERTIES OF ICE CONTAINING ACID AND SALT IMPURITIES AT MICROWAVE FREQUENCIES

    MATSUOKA Takeshi , FUJITA Shuji , MAE Shinji

    To clarify the effects of ionic impurities on the dielectric properties of ice, the relative complex dielectric permittivities (ε^*=ε′-iε″) of ice containing acid and salt impurities were measured in …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 11, 247, 1997-11

  • PRECISE MEASUREMENT OF DIELECTRIC LOSS OF ICE AT 5-40 GHz

    MATSUOKA Takeshi , FUJITA Shuji , MORISHIMA Shigenori , MAE Shinji

    The relative complex dielectric permittivity, ε^*=ε′-iε″, of ice has been measured in the frequency range 5 GHz to 40 GHz and temperature range -80 to -10℃. So far, knowledge about the dielectric loss …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 10, 154, 1996-09

  • DIFFUSION COEFFICIENT AND SOLUBILITY MEASUREMENTS OF NOBLE GASES IN ICE CRYSTALS

    SATOH Kouichi , UCHIDA Tsutomu , HONDOH Takeo , MAE Shinji

    Diffusion coefficients and solubility of helium, neon and argon gases in ice crystals were determined by measuring the pressure rise in a vessel caused by gas emission from an ice sample supersaturate …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 10, 73-81, 1996-09

  • MEASUREMENT OF DIELECTRIC LOSS OF ICE Ih AT MICROWAVE FREQUENCIES WITH CAVITY RESONATOR

    MATSUOKA Takeshi , FUJITA Shuji , MORISHIMA Shigenori , MAE Shinji

    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 …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 9, 180, 1995-09

  • MEASUREMENT OF DIFFUSION COEFFICIENTS OF GAS MOLECULES IN ICE

    SATOH Kouichi , UCHIDA Tsutomu , HONDOH Takeo , MAE Shinji

    Measurements of diffusion coefficients of He gas and N_2 gas in ice crystals were carried out under the high pressure and atmosphere pressure. The understanding of diffusion phenomena of air molecules …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 8, 207, 1994-11

  • PRECISE MEASUREMENTS OF DIELECTRIC ANISOTROPY IN ICE Ih AT 35GHz USING AN OPEN MICROWAVE RESONATOR

    MORISHIMA Shigenori , FUJITA Shuji , MATSUOKA Takeshi , MAE Shinji

    Precise measurement of the dielectric anisotropy in ice Ih at 35GHz was carried out using an open microwave resonator (Fabry-Perot resonator). The purpose of the measurement was to obtain physical par …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 8, 201, 1994-11

  • DIELECTRIC PROPERTIES OF ICE AT 5.1 AND 9.7GHz USING CAVITY RESONATOR

    MATSUOKA Takeshi , FUJITA Shuji , MORISHIMA Shigenori , MAE Shinji

    The relative complex dielectric permittivity (ε^*=ε'-iε") of ice was investigated at 5.1 and 9.7GHz by the cavity resonator method. The purpose of the measurement was to clarify the dielectric propert …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 8, 200, 1994-11

  • GROWTH PROCESS OF AIR-HYDRATES AND DIFFUSION OF AIR MOLECULES IN DEEP ICE SHEET

    UCHIDA Tsutomu , MAE Shinji , HONDOH Takeo , LIPENKOV Vladimir Ya. , DUVAL Paul , KAWABATA Junichi

    Geometrical parameters of air-hydrate crystals in Vostok ice cores revealed that air-hydrate crystals were growing in the deep ice sheet. Air-hydrate crystals with radius of 65 to 100μm grew while sma …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 8, 140-148, 1994-11

  • Dielectric properties of NaCl-doped ice at 9.7 GHz

    Matsuoka Takeshi , Fujita Shuji , Mae Shinji

    The relative complex dielectric permittivity of NaCl-doped ice was measured at 9.7GHz in order to clarify the doping effect of the salt component in the microwave frequency range. It was found that ov …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology (7), 33-40, 1993-09

    IR 

  • Effects of air-hydrate crystals on grain growth

    UCHIDA T. , Mae Shinji , Hondoh Takeo , Duval Paul , Lipenkov Volodya Ya.

    Microscopic observations of air-hydrate crystals in Vostok ice cores, Antarctica, revealed that air-hydrate crystals acted as obstacles to the grain boundary migration. About half of the air-hydrate c …

    Proc, NIPR Symp. Polar Meteorol. Glaciol. 7, 7-13, 1993

    Cited by (1)

  • Measurements of surface energy of air-hydrate crystal in Vostok ice core

    UCHIDA T. , Mae Shinji , Hondoh Takeo , Duval Paul , Lipenkov Volodya Ya.

    Microscopic observations of thin sections of Vostok ice cores, Antarctica, showed that various shapes and sizes of air-hydrate crystals are located on the grain boundaries. The surface energy of air-h …

    Proc. NIPR Symp. Polar Meteorol. Glaciol. 7, 1-6, 1993

    Cited by (1)

  • MEASUREMENT OF THE DISSOLUTION VOLUME AND THE DIFFUSION COEFFICIENT OF CARBON DIOXIDE IN AN ICE SINGLE CRYSTAL

    UCHIDA Tsutomu , HONDOH Takeo , MAE Shinji , KAWABATA Jun-ichi

    Recently, a strong correlation between the concentration profile of carbon dioxide and climatic change was found by the chemical analysis of deep ice cores recovered from Vostok, Antarctica (J. JOUZEL …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 5, 182, 1992-02

  • MEASUREMENTS OF CARBON DIOXIDE PARTIAL PRESSURE IN THE AIR AND SURFACE SEA WATER ON BOARD THE ICEBREAKER "SHIRASE"

    HASHIDA Gen , NAKAZAWA Takakiyo , MURAYAMA Shohei , TANAKA Masayuki , AOKI Shuhji , YAMANOUCHI Takashi , KAWAGUCHI Sadao

    Continuous measurements of the CO_2 partial pressure in the air and surface sea water were made on board the icebreaker "SHIRASE" between Japan and Antarctica for the periods from November 1987 to Apr …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 4, 129, 1991-05

  • CONCENTRATION OF ATMOSPHERIC CARBON DIOXIDE AT THE JAPANESE ANTARCTIC STATION, SYOWA

    AOKI Shuhji , NAKAZAWA Takakiyo , MURAYAMA Shohei , TANAKA Masayuki , YAMANOUCHI Takashi , KAWAGUCHI Sadao , SHIOBARA Masataka , FUKABORI Masashi , MURAYAMA Haruta

    Continuous measurement of the atmospheric CO_2 concentration was initiated at Syowa Station in February 1984. Variation of CO_2 concentration at this station can be divided into three components such …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 4, 125-126, 1991-05

  • MEASUREMENTS OF TOTAL GAS CONTENT OF AN ICE CORE FROM MIZUHO STATION, ANTARCTICA

    KAMEDA Takao , NAKAWO Masayoshi , NAGOSHI Masayasu , MAE Shinji

    Total gas content of an ice core, 700m long drilled at Mizuho Station, East Antarctica (Mizuho core), has been measured by two methods. One method is the so called "melting method", in which entrapped …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology (3), 51-57, 1990-01

    IR 

  • Upward movement of the ice sheet near the Yamato Mountains estimated from an ice core analysis (abstract)

    Nakawo Masayoshi , Nagoshi Masayasu , Mae Shinji

    Measurements of density, total gas content,

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 2, 176, 1989-08

  • ORIENTATION OF THE 700-M MIZUHO CORE AND ITS STRAIN HISTORY

    FUJITA Shuji , NAKAWO Masayoshi , MAE Shinji

    Structual analyses of the core revealed that the ice fabric pattern as well as the shape of individual ice grains and air bubbles exhibited strong anisotropies. They were correlated with the stress co …

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 1, 122-131, 1987-09

  • Development of a simple system for total gas extraction and measurement of polar ice cores (abstract)

    Nagoshi Masayasu , Nakawo Masayoshi , Mae shinji

    Memoirs of National Institute of Polar Research. Special issue 45, 111, 1986-12

  • The measurement of velocities of P and S waves in boreholes at Mizuho Station and Minami-Yamato Nunataks, East Antarctica

    Ishizawa Keniji , Mae Shinji

    At Mizuho Station (70°42'S, 44°20'E) velocity profiles of P and S waves down to a depth of 208m were measured on 30 July and 1 August 1983,the waves were generated by hitting an iron block set on the …

    Memoirs of National Institute of Polar Research. Special issue 39, 165-172, 1985-12

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