2024-03-28T14:52:01Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00008384
2023-05-01T07:51:07Z
3:233:254
Rock glacier dynamics near the lower limit of mountain permafrost in the Swiss Alps
池田, 敦
34851
Ikeda, Atsushi
筑波大学
University of Tsukuba
博士(理学)
Doctor of Philosophy in Science
Rock glaciers, a mass of frozen debris moving downslope, are the best geomorphological indicator of permafrost in steep mountainous regions. Although recent studies have revealed in detail the distribution, structure, surface movement and thermal conditions of rock glaciers, few have addressed mass balance and internal movement. This study aims at evaluating rock glacier dynamics near the lower limit of mountain permafrost in the light of both thermal conditions and mass balance. For this purpose, two series of field observations were undertaken in the eastern Swiss Alps. The first half addresses the contemporary dynamics of two small rock glaciers located near the lower limit of mountain permafrost. The second half focuses on the difference in activity status of rock glaciers on a regional scale, which may reflect long-term variations in climate and debris supply. ・・・
2003
Includes bibliographical references
doctoral thesis
2004
2004-03-25
application/pdf
application/pdf
甲第3395号
https://tsukuba.repo.nii.ac.jp/record/8384/files/A3395.pdf
https://tsukuba.repo.nii.ac.jp/record/8384/files/1.pdf
jpn
open access