Map of permafrost distribution in the Qilian Mountains

Map of permafrost distribution in the Qilian Mountains


The data includes continuous and discontinuous permafrost and seasonally frozen ground distributed in the Qilian Mountains. Based on the field investigation, borehole drillings along the highway as well as previous data collected from the documentations, the lower limits of permafrost and the formula of the lower limits of permafrost in the Qilian Mountains is obtained by regression analysis. The digital elevation model (DEM) data is the SRTM (Shuttle Radar Topography Mission) jointly measured by NASA and NIMA. After the data being transformed into GCS WGS 1984 coordinate system, it is resampled into 100 m spatial resolution. The altitude of 3000 m was used to define the area of the Qilian Mountains. With the aid of ArcGIS platform and the support of DEM data, the permafrost distribution map of the Qilian Mountains with a resolution of 100 m is simulated. The lower limits of permafrost obtained by the regression analysis passed the significance test. According to the 548 existing borehole data points, the verification accuracy of permafrost area is 90.11%. The data can be used to estimate the ground ice content and the amount of water released from permafrost degradation.


File naming and required software

File name: distribution map of permafrost in the Qilian Mountain. TIF, which shows the distribution of permafrost in recent years. Data reading mode: use ArcMap under ArcGIS platform to directly open and use, which will generate files in grid format. It is recommended that the version above 10.3 is used


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Cite as:

Sheng, Y. (2020). Map of permafrost distribution in the Qilian Mountains. National Tibetan Plateau Data Center, DOI: 10.11888/Geocry.tpdc.270456. CSTR: 18406.11.Geocry.tpdc.270456. (Download the reference: RIS | Bibtex )

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Support Program

Pan-Third Pole Environment Study for a Green Silk Road-A CAS Strategic Priority A Program (No:XDA20000000)

the Strategic Priority Research Program of Chinese Academy of Sciences (No:XDA20100103) [XDA20100103]

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License: This work is licensed under an Attribution 4.0 International (CC BY 4.0)


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Keywords
Geographic coverage
East: 103.05 West: 93.50
South: 39.84 North: 35.84
Details
  • Temporal resolution: 1 year < x < 10 year
  • Spatial resolution: 10m - 100m
  • File size: 37 MB
  • Views: 4,106
  • Downloads: 100
  • Access: Requestable
  • Temporal coverage: 2019-07-13 To 2020-07-12
  • Updated time: 2021-04-19
Contacts
: SHENG Yu  

Distributor: National Tibetan Plateau Data Center

Email: data@itpcas.ac.cn

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