Permafrost occurrence at Mt. Sashirui, Shiretoko mountain range, eastern Hokkaido, Japan

After conducting 5.5 m borehole temperature measurements near the summit of Mt. Sashirui, Hokkaido, Japan, the first occurrence of permafrost in the Shiretoko mountain range has been newly confirmed. The observation point, a wind-swept site, is covered by an alpine wind-exposed dwarf shrub community. The observation of mean annual ground surface temperature and the estimation of mean annual air temperature at this point were both close to the thresholds of onset of permafrost formation. However, thermal insulation by bryophyte and lichen cover in summer and effective heat transfer through frozen shrub branches and a thin snow layer during cold spells are likely to sustain this permafrost. Continuous long-term measurements of ground temperatures at this site are expected to be important for monitoring climate change in mountain areas of the Shiretoko region.

Authors

Institutions

Publication Details

Journal
Bulletin of Glaciological Research
Published
2025-01-01
DOI
https://doi.org/10.5331/bgr.24r05
Primary Topic
Climate change and permafrost
Type
article
Field-Weighted Citation Impact
0.00

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Permafrost occurrence at Mt. Sashirui, Shiretoko mountain range, eastern Hokkaido, Japan

Akihiro Hachikubo, Hirotsugu Minami, Keisuke Tsukaya, Ryota ADACHI et al.
1 links
Bulletin of Glaciological Research
Climate change and permafrost
article

Permafrost occurrence at Mt. Sashirui, Shiretoko mountain range, eastern Hokkaido, Japan

Akihiro Hachikubo, Hirotsugu Minami, Keisuke Tsukaya, Ryota ADACHI, Hiroshi Adachi, Kazutaka Tateyama, Hiroshi Ohno, Kazutoshi Sato, Ken Sato, Kenji Hata, Yoshinao Kumagai, S. Komamiya, Kengo Hashimoto, Satoshi N. Nakamura, Tatsuya Watanabe, Gen TERAYAMA
article en

Abstract

After conducting 5.5 m borehole temperature measurements near the summit of Mt. Sashirui, Hokkaido, Japan, the first occurrence of permafrost in the Shiretoko mountain range has been newly confirmed. The observation point, a wind-swept site, is covered by an alpine wind-exposed dwarf shrub community. The observation of mean annual ground surface temperature and the estimation of mean annual air temperature at this point were both close to the thresholds of onset of permafrost formation. However, thermal insulation by bryophyte and lichen cover in summer and effective heat transfer through frozen shrub branches and a thin snow layer during cold spells are likely to sustain this permafrost. Continuous long-term measurements of ground temperatures at this site are expected to be important for monitoring climate change in mountain areas of the Shiretoko region.

Bulletin of Glaciological ResearchVol. 43(0)
Hokkaido University (JP), National Institute of Polar Research (JP), Hokkaido Museum (JP), Kitami Institute of Technology (JP)
Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science
Climate action
Openalex Percentile: Top 82%
Climate change and permafrost
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.