Precise Satellite Geodetic Measurements and Geodynamic Research in Northern Eurasia: State and Prospects

IF 0.7 4区 地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY Doklady Earth Sciences Pub Date : 2024-06-20 DOI:10.1134/s1028334x24602487
G. M. Steblov, P. N. Shebalin, G. E. Melnik
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Abstract

The issues in geodynamic research in Northern Eurasia over the past three decades with emphasis on the use of space technologies in geodesy and geodynamics are presented. The main focus is on the GNSS system as the most widespread and effective tool for geodynamic research due to the compactness and relative ease of installation of ground-based tracking equipment, as well as the possibility of its autonomous operation. The importance of precise GNSS positioning for monitoring small-scale geodynamic displacements of the Earth’s surface, which requires millimeter-scale measurement accuracy, is emphasized. The issues of development of a precise reference frame for geodynamics and maintaining its long-term consistency based on the International Terrestrial Reference Frame (ITRF) are considered, as well as the problems and prospects of precise satellite geodetic measurements and geodynamic research in the context of the current reduction in interaction with international geodetic data centers. To solve the problems that have arisen, ways are proposed based on arranging a subcontinental-scale system for equalization of raw GNSS measurements. The capabilities of the GNSS network used for solving problems of geodesy and geodynamics are demonstrated by the example of the analysis of the tectonic rigidity of cratons of Northern Eurasia and the impact of motion of adjacent tectonic plates and variations of these motions in the past geological eras on the contemporary geodynamic setting of these cratons.

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欧亚大陆北部的精确卫星大地测量和地球动力学研究:现状与前景
摘要介绍了过去三十年来北欧亚大陆地球动力学研究的问题,重点是空间技术 在大地测量和地球动力学中的使用。主要重点是全球导航卫星系统,该系统是地球动力学研究最广泛和最有效的工具,因为其结构紧凑,地面跟踪设备安装相对容易,而且可以自主运行。强调了全球导航卫星系统精确定位对监测地球表面小尺度地球动 力位移的重要性,这需要毫米级的测量精度。考虑了在国际地球参考框架的基础上制定地球动力学精确参考框架并保持其长 期一致性的问题,以及在目前与国际大地测量数据中心的互动减少的情况下精确 卫星大地测量和地球动力学研究的问题和前景。为解决已出现的问题,提出了一些方法,其基础是安排一个次大陆尺度的系 统,用于全球导航卫星系统原始测量的均衡。通过分析欧亚大陆北部陨石坑的构造刚度以及相邻构造板块的运动和这些 运动在过去地质时代的变化对这些陨石坑当代地球动力环境的影响,展示了全 球导航卫星系统网络用于解决大地测量学和地球动力学问题的能力。
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来源期刊
Doklady Earth Sciences
Doklady Earth Sciences 地学-地球科学综合
CiteScore
1.40
自引率
22.20%
发文量
138
审稿时长
3-6 weeks
期刊介绍: Doklady Earth Sciences is a journal that publishes new research in Earth science of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.
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