Mountain permafrost around the lower limit in the Daisetsu Mountains

2015 Fiscal Year Final Research Report

• Project/Area Number: 25350417
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geography
• Research Institution: Hokkaido University
• Principal Investigator: SONE Toshio 北海道大学, 低温科学研究所, 助教 (10222077)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 山岳永久凍土 / 分布下限高度 / 電気探査

Outline of Final Research Achievements

The lower limit of mountain permafrost distribution on windward bare ground in the Daisetsu Mountains, Hokkaido, was estimated by the results of air and ground surface temperatures and electrical resistivity measurements. A borehole, deeper than 10m, was dug around the lower limit of permafrost. This site is expected to be a good monitoring site for ground temperature changes. The measurements of ground temperatures in a degrading palsa, peaty permafrost mound, were carried out. The temperature logger which can measure temperatures at many different depths in a small borehole was developed.

Free Research Field

自然地理学