Abstract
The northwest section of the Lesser Khingan Range is close to the southern permafrost boundary in China. Global warming and permafrost degradation have exacerbated local landslides and other natural disasters. Land surface temperature is used as an index of the Earth’s surface energy balance and climate change. In order to study regional surface temperature change and permafrost degradation laws as well as to conduct an in-depth study of their influences, we used Landsat ETM+ imagery and applied remote sensing thermal infrared methods using the ENVI software to calculate surface emissivity. Using the radiative transfer equation method, we produced four surface temperature maps of the northwest section of the Lesser Khingan Range, China. Using the ArcGIS software, we produced two views of an initial permafrost distribution map. Through analysis of elevation, aspect, and slope distribution, the initial permafrost distribution map produced correlates well with on-site investigations and geophysical survey results, showing clear “Khingan–Baikal type” permafrost features. This study shows that the permafrost distribution maps generated from Landsat ETM+ data by ground temperature inversion for the study area can assist research into permafrost degradation mechanisms and the disasters they cause.
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Wang, C., Shan, W., Guo, Y., Hu, Z., Jiang, H. (2014).
Permafrost Distribution Study Based on Landsat ETM+ Imagery of the Northwest Section of the Lesser Khingan Range, China.
In: Sassa, K., Canuti, P., Yin, Y. (eds) Landslide Science for a Safer Geoenvironment. Springer, Cham. https://doi.org/10.1007/978-3-319-04996-0_81
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DOI: https://doi.org/10.1007/978-3-319-04996-0_81
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