2020 height measurement and determination of Mount Qomolangma

doi:10.11947/j.AGCS.2021.20210034

Abstract

Abstract: In order to achieve the goal that China and Nepal jointly announce the height of Mount Qomolangma, China has carried out the height measurement campaign of Mount Qomolangma from 2019 to 2020, and completed the summit survey on May 27, 2020. For the first time, airborne gravity survey was conducted in the north region of Mount Qomolangma and ground gravity data at the summit was collected, and the local gravimetric quasigeoid model and the geoid undulation of the summit in the International Height Reference System (IHRS) were determined. A variety of advanced measuring equipment, especially domestic measuring instruments played a full and active role in 2020 campaign. By means of the cross validations between multiple geodetic techniques and the strict checking computations, the accuracy and reliability of the results of 2020 campaign were ensured. Finally, China and Nepal collaborated on the data processing and jointly determined that the orthometric height (altitude) of the snow surface of the summit of Mount Qomolangma is 8 848.86 m.

Key words: height measurement of Mount Qomolangma, GNSS, airborne gravity, geoid, international height reference system

CLC Number:

P223

DANG Yamin, GUO Chunxi, JIANG Tao, ZHANG Qingtao, CHEN Bin, JIANG Guangwei. 2020 height measurement and determination of Mount Qomolangma[J]. Acta Geodaetica et Cartographica Sinica, 2021, 50(4): 556-561.

References

[1] 陈俊勇. 珠穆朗玛峰高程计算[J]. 测绘通报, 1975(4):19-27. CHEN Junyong. Heigh determination for Qomolangma Peak[J]. Bulletin of Surveying and Mapping, 1975(4):19-27.
[2] 朱亮. 珠穆朗玛峰的高程测定[J]. 中国科学, 1976, 19(2):74-83. ZHU Liang. Height determination of Qomolangma Peak[J]. Science in China, 1976, 19(2):74-83.
[3] 陈俊勇, 庞尚益, 张骥, 等. 对我国35年来珠峰高程测定成果的思考[J]. 测绘学报, 2001, 30(1):1-5. DOI:10.3321/j.issn:1001-1595.2001.01.001. CHEN Junyong, PANG Shangyi, ZHANG Ji, et al. The height determination of Qomolangma Peak in China:review and analysis[J]. Acta Geodaetica et Cartographica Sinica, 2001, 30(1):1-5. DOI:10.3321/j.issn:1001-1595.2001.01.001.
[4] 陈俊勇, 张燕平, 岳建利, 等. 2005珠峰高程测定[J]. 测绘学报, 2006, 35(1):1-3. DOI:10.3321/j.issn:1001-1595.2006.01.001. CHEN Junyong, ZHANG Yanping, YUE Jianli, et al. 2005 height determination of Qomolangma Feng[J]. Acta Geodaetica et Cartographica Sinica, 2006, 35(1):1-3. DOI:10.3321/j.issn:1001-1595.2006.01.001.
[5] 陈俊勇, 岳建利, 郭春喜, 等. 2005珠峰高程测定的技术进展[J]. 中国科学D辑(地球科学), 2006, 36(3):280-286. CHEN Junyong, YUE Jianli, GUO Chunxi, et al. Technical progress of 2005 height determination of Qomolangma Peak[J]. Science in China Ser. D (Earth Science), 2006, 36(3):280-286.
[6] 党亚民, 程传录, 陈俊勇, 等. 2005珠峰测高GPS测量及其数据处理[J]. 武汉大学学报(信息科学版), 2006, 31(4):297-300, 320. DANG Yamin, CHENG Chuanlu, CHEN Junyong, et al. GPS data processing of the 2005 Qomolangma height surveying[J]. Geomatics and Information Science of Wuhan University, 2006, 31(4):297-300, 320.
[7] FLURY J, RUMMEL R. On the geoid-quasigeoid separation in mountain areas[J]. Journal of Geodesy, 2009, 83(9):829-847.
[8] International Association of Geodesy. IAG Resolutions Adopted by the IAG Council at the XXVIth IUGG General Assembly[EB/OL]. (2015-06-22). https://office.iag-aig.org/iag-and-iugg-resolutions.
[9] International Association of Geodesy. IAG Resolutions Adopted by the IAG Council at the XXVIIth IUGG General Assembly[EB/OL].[2019-07-08]. https://office.iag-aig.org/iag-and-iugg-resolutions.
[10] IHDE J, SÁNCHEZ L, BARZAGHI R, et al. Definition and proposed realization of the international height reference system (IHRS)[J]. Surveys in Geophysics, 2017, 38(3):549-570.
[11] SÁNCHEZ L, SIDERIS M G. Vertical datum unification for the international height reference system (IHRS)[J]. Geophysical Journal International, 2017, 209(2):570-586.
[12] MORITZ H. Geodetic reference system 1980[J]. Journal of Geodesy, 2000, 74(1):128-133.
[13] RAPP R H. A Fortran program for the computation of gravimetric quantities from high degree spherical harmonic expansions[R]. Columbus:The Ohio State University, 1982.
[14] SÁNCHEZ L, ÅGREN J, HUANG J, et al. Basic agreements for the computation of station potential values as IHRS coordinates, geoid undulations and height anomalies within the Colorado 1 cm geoid experiment, Version 0.5 Munich:Technical University of Munich[R]. 2018.
[15] FÖRSTE C, BRUINSMA S, ABRIKOSOV O, et al. EIGEN-6C4:the latest combined global gravity field model including GOCE data up to degree and order 2190 of GFZ potsdam and GRGS toulouse[R]. Potsdam, Germany:GFZ Data Services, 2014.
[16] FARR T G, ROSEN P, CARO E, et al. The shuttle radar topography mission[J]. Reviews of Geophysics, 2007, 45(2):RG2004.
[17] HEISKANEN W A, MORITZ H. Physical geodesy[M]. San Francisco:Springer, 1967.
[18] MORITZ H. Advanced physical geodesy[M]. Karlsruhe:Herbert Wichmann Verlag, 1980.
[19] HOFMANN-WELLENHOL B, MORITZ H. Physical geodesy[M]. New York:Springer, 2005.
[20] 李建成, 陈俊勇, 宁津生, 等. 地球重力场逼近理论与中国2000似大地水准面的确定[M]. 武汉:武汉大学出版社, 2003. LI Jiancheng, CHEN Junyong, NING Jinsheng, et al. Theory of Earth gravity field approximation and China 2000 quasigeoid determination[M]. Wuhan:Wuhan University Press, 2003.
[21] 郭春喜, 宁津生, 陈俊勇, 等. 珠峰地区似大地水准面精化与珠峰顶正高的确定[J]. 地球物理学报, 2008, 51(1):101-107. GUO Chunxi, NING Jinsheng, CHEN Junyong, et al. Improvement of regional quasi-geoid in Qomolangma and determination of orthometric elevation[J]. Chinese Journal of Geophysics, 2008, 51(1):101-107.
[22] FORSBERG R. A study of terrain reductions, density anomalies and geophysical inversion methods in gravity field modelling[R]. Columbus:The Ohio State University, 1984.
[23] JIANG Tao, WANG Yanming. On the spectral combination of satellite gravity model, terrestrial and airborne gravity data for local gravimetric geoid computation[J]. Journal of Geodesy, 2016, 90(12):1405-1418.
[24] JIANG Tao. On the contribution of airborne gravity data to gravimetric quasigeoid modelling:a case study over Mu Us area, China[J]. Geophysical Journal International, 2018, 215(2):1308-1321.
[25] JIANG Tao, DANG Yamin, ZHANG Chuanyin. Gravimetric geoid modeling from the combination of satellite gravity model, terrestrial and airborne gravity data:a case study in the mountainous area, Colorado[J]. Earth, Planets and Space, 2020, 72(1):189.