GEODYNAMICS
GEODYNAMICS
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DOI：
10.23939/jgd2023.02.089
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发表时间：
2023-12
期刊：
影响因子：
0.3
通讯作者：
S. Doskich;S. Savchuk;B. Dzhuman
中科院分区：
文献类型：
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作者：
S. Doskich;S. Savchuk;B. Dzhuman
研究的目的是确定乌克兰领土的水平变形，只使用经过验证和适合地球动力学解释的全球导航卫星系统台站。初始数据是2017年至2020年30个GNSS台站的观测数据。方法论方法包括分析乌克兰现代地壳变形。因此，第一次的影响的坐标时间序列创建的两种不同的方法：精密单点定位（PPP）和经典的差分方法，确定变形过程进行了分析。据确定，目前对于包括地球动力学在内的监测任务，有必要使用精密单点定位方法，因为用这种方法确定的全球导航卫星系统台站速度的精度高于经典差分方法。结果根据全球导航卫星系统台站的坐标时间序列绘制了乌克兰境内地壳水平变形图。确定了Shepetivka-Starokostiantyniv Khmelnytsky地区、Boryspil- Pryluky-Pereyaslav-Khmelnitsky基辅和切尔尼希夫地区的延伸区，以及切尔尼希夫地区的Nizhyn - Stepovi Khutory -Koznov的地壳压缩区。此外，还绘制了全球导航卫星系统台站的水平位移图，其中观测到了各种不同的位移，这可能是由于现代近垂直和近水平断层和断层区的存在造成的。为了更好地解释所获得的结果，有必要涉及乌克兰领土构造活动的地质和地球物理数据。
The purpose of research is to identify horizontal deformation of the Ukraine territory, using only proven and suitable for geodynamic interpretation GNSS stations. The initial data are observations from 30 GNSS stations for 2017 to 2020. Methodology. The methodology includes the analysis of modern Earth's crust deformations of Ukraine. As a result, for the first time the impact of the coordinates time series created by two different methods: Precise Point Positioning (PPP) and the classical differential method, on determining deformation processes was analysed. It was established that nowadays for the tasks of monitoring, including geodynamic, it is necessary to use the Precise Point Positioning (PPP) method, because the accuracy of determined velocities of the GNSS stations by this method was higher than in the classical differential method. Results. A map of horizontal Earth's crust deformations on the territory of Ukraine was created according to the coordinates time series of GNSS stations. The extension areas of Shepetivka-Starokostiantyniv Khmelnytsky region, Boryspil- Pryluky-Pereyaslav-Khmelnitsky Kyiv and Chernihiv region, as well as a compression area of the Earth's crust in Nizhyn - Stepovi Khutory - Kozelets of Chernihiv region was identified. Additionally, a map of horizontal displacements of the GNSS-stations was created, where the diverse of these displacements was observed, which is likely to be caused by the presence of modern subvertical and sub-horizontal faults and fault areas. For better interpretation of the obtained results, it is necessary to involve geological and geophysical data of tectonic activity of the Ukraine territory.