Journal of Geography (Chigaku Zasshi)
Online ISSN : 1884-0884
Print ISSN : 0022-135X
Letter
Ground Ice and Temporary Crater Lake in Jigokudani Crater, Kita-yatsugatake, Central Japan
Chousei SHIMIZUNobuyuki YAMAKAWAMasaki ISHIIMisae FUJIMORIKaito ENDO
Author information
JOURNALS FREE ACCESS

2012 Volume 121 Issue 2 Pages 359-366

Details
Abstract

 Ground ice and temporary lake were studied in the Jigokudani Crater (N36°03′44.82″, E138°20′45.82″) in a northern area of the Yatsugatake Volcanic Chain (Kita-yatsugatake). The crater, which is about 30 m deep, is located at 2108 m a.s.l., and is surrounded by subalpine coniferous forest where the mean annual air temperature is about 3°C. The ground ice survived in summer mainly because cold air blew down through voids between andesite blocks composing the crater wall. The ice remained throughout 2009, although it melted completely in September 2010. In 2010, a crater lake appeared in May and disappeared in early August. This survival period of the lake was probably much longer than in other years. We consider that the melting of ground ice was promoted by the long-lasting lake having a slightly positive temperature which contacted the ice directly.

Information related to the author
© 2012 Tokyo Geographical Society
Previous article Next article
feedback
Top