追问地球之巅 记我国珠峰高程测量历程

Core Viewpoint - The article commemorates the 50th anniversary of China's first accurate measurement of Mount Everest's height, highlighting the achievements in surveying and mapping under the leadership of the Communist Party of China, and the spirit of dedication and hard work among Chinese surveyors [1][2]. Group 1: Historical Context - The first measurement of Mount Everest's height by Chinese surveyors took place on May 27, 1975, marking a significant milestone in the history of global surveying [2][3]. - Prior to 1975, China relied on foreign measurements, using 8882 meters as the height of Everest, which was based on external observations [3][4]. Group 2: Measurement Techniques and Challenges - The 1975 measurement involved a large team of over 400 individuals, including climbers, surveyors, and scientists, who conducted extensive preparatory work at various altitudes [4][5]. - The surveyors faced extreme conditions, including high altitudes and harsh weather, which tested their physical and mental endurance [5][6]. Group 3: Technological Advancements - The article discusses the evolution of surveying technology in China, noting significant advancements in measurement techniques and equipment over the years, particularly leading up to the 2005 and 2020 measurements [8][12]. - The 2020 measurement utilized advanced satellite positioning technology and was conducted in collaboration with Nepal, showcasing China's growing capabilities in surveying and mapping [13][16]. Group 4: Recent Developments - The latest measurement announced in December 2020 confirmed Mount Everest's height as 8848.86 meters, reflecting the continuous efforts and improvements in China's surveying methodologies [16]. - The article emphasizes the importance of these measurements not only for scientific accuracy but also for fostering international cooperation and showcasing China's technological prowess [12][16].