The Quaternary Research (Daiyonki-Kenkyu)
Online ISSN : 1881-8129
Print ISSN : 0418-2642
ISSN-L : 0418-2642
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Volume 50, Issue 3
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The Paper for the 2009 Japan Association for Quaternary Research Academic Award
  • Study of cold climate landforms in Japan
    Takashi Koaze
    2011 Volume 50 Issue 3 Pages 133-148
    Published: June 01, 2011
    Released on J-STAGE: April 26, 2012
    DOIhttps://doi.org/10.4116/jaqua.50.133
    JOURNAL FREE ACCESS
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    Glacial and periglacial landforms are developed in the mountains of the central and north Japan, and a number of studies were published prior to the 1950s. However, I doubted the vertical convection theory as the origin of patterned ground when I saw miniature sorted stripes on a mountain for the first time. I investigated the formation of the sorted stripes, and proved that frost heaving is the basic process for sorting stones in the pattern by field observation. Thereafter, I became interested in the landforms of mountains, and described mainly the following problems. The coldest period in the last glaciation of north Japan was considered to be from 40,000 years to 20,000 years BP judging from the age of icewedge casts found in lowland Hokkaido. The maximum expansion of the glaciers in the mountains of central Japan also occurred before 40,000 years BP judging by the distribution of moraines. Now, I am convinced that the alpine zone in the Japanese mountains is the best preserved among the mid-latitude high mountains of the world, because there are artificial disturbances such as alpine meadows above the timber line.
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