How to determine the height of Everest?
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The reporter recently learned from the State Bureau of Surveying and Mapping that this year's Mount Everest elevation survey will be carried out for the first time by Chinese professional surveying and mapping personnel and professional mountaineers in cooperation with the Tibet Mountaineering Association. It will carry surveying and mapping instruments and climb the summit of Mount Everest for observation. Various detection techniques find the highest point of the peak rock, measure the depth of the snow accurately, erect the measurement target (a type of measurement mark) and observation prism at the top of the peak, and set up a GPS observation device to accurately determine the height of Mount Everest.
While directly observing the summit of Mount Everest, the surveying and mapping staff will also carry out large-scale control and survey work on the surrounding areas, provide accurate basis for the determination of Everest's elevation, and analyze and study the 40-year observation data of the neighboring region. , carry out earth science research work closely related to the height position change of Mount Everest.
Based on the analysis and processing of the obtained observational results, China will determine the Everest peak elevation data for this survey and publish it to the public after it has been approved in accordance with the national regulations concerning the release of important geographic information.