Thermal states, responsiveness and degradation of marginal permafrost in Mongolia

• Published in: Permafrost and Periglacial Processes
• Main Authors: Mamoru Ishikawa, Yamkhin Jamvaljav, Avirmed Dashtseren, Natsagdorj Sharkhuu, Gamboo Davaa, Yoshihiro Iijima, Nachin Baatarbileg, Kenji Yoshikawa
• Format: Article in Journal/Newspaper
• Language: unknown
• Subjects: Ice; permafrost
• Online Access: https://doi.org/10.1002/ppp.1990

Ground thermal conditions in marginal permafrost in Mongolia were assessed using ground temperatures measured year‐round at 69 borehole sites. Permafrost is continuous in northern Mongolia and exists as sporadic/isolated patches in the south. Ground temperatures are strongly controlled by local environmental factors, such as topographic depressions that concentrate cold air during winter, ice‐rich strata that prevent penetration of sensible heat, and tree cover that reduces incident solar radiation. Permafrost temperatures are typically between −1 and 0°C; colder permafrost (