Internal layering detected by a microwave ice-radar in the Arctic ice cap (scientific paper)

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概要

• 論文の詳細を見る

• Radar observations were carried out on the Agassiz ice cap in Canadian arctic territory using a newly developed high resolution ice-radar. The radar employed a microwave frequency (L-band) in order to realize resolution of less than 1m. Actual range resolution of the radar is about 63cm in ice. The radar can observe the bedrock topography and internal echoes with high resolution. Signals from bedrock up to 500 meters in depth were detected. The attenuation coefficient in the L-band frequency was calculated to be 0.05dB/m. Internal ice layers were observed from about 50m to 200m in depth. Internal layers detected by the radar were compared to the electrical conductivity of an ice core measured by ECM at the summit of the ice cap with almost the same resolution. Each peak of the radar echo corresponded to an ECM peak, but the relationship between echo intensity and ECM intensity is not clear.

• 国立極地研究所の論文

著者

• Goto-azuma Kumiko

  Nagaoka Institute Of Snow And Ice Studies National Research Institute For Earth Science And Disaster

• Goto-azuma Kumiko

  Nagaoka Institute Of Snow And Ice Studies

• Fisher David

  Geological Survey Of Canada

• SUITZ Takeshi

  Communications Research Laboratory

• URATSUKA Seiho

  Communications Research Laboratory

• Takahashi Shuhei

  Department Of Civil Engineering Kitami Institute Of Technology

• MAE Shinji

  Faculty of Engineering, Hokkaido University

• MAENO Hideo

  Communications Research Laboratory

• Mae S

  Faculty Of Engineering Hokkaido University

• Maeno Hideo

  Communication Research Laboratory

• Maeno Hideo

  Environment Information Technology Group Applied Research And Standards Department National Institut

• Uratsuka S

  Communications Research Laboratory

• SUITZ Takeshi

  Radio Engineering and Electronics Association

• Mae Shinji

  Faculty Of Engineering Hokkaido University

• Masuko H

  Environment Information Technology Group Applied Research And Standards Department National Institut

• Suzuki Toshitaka

  Faculty Of Science Yamagata University

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