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Process and mechanism analysis of typical permafrost area surface deformation at two sites along the Qinghai-Tibet

Shibo Liu1, Lin Zhao2, Lingxiao Wang3

  • 1Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, China; School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China.

The Science of the Total Environment
|November 2, 2024
PubMed

Keywords:
Active layerGround ice meltingHydrothermal changesLeveling measurementsPermafrost surface deformation

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Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
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