Establishing the correlation between changes of absolute rotation poles of major tectonic plates based on continuous GNSS stations data

IF 0.9 4区 地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Acta Geodynamica et Geomaterialia Pub Date : 2022-04-29 DOI:10.13168/agg.2022.0006
I. Savchyn
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引用次数: 2

Abstract

The purpose of the work is to establish the correlation between the change of absolute rotation poles of major tectonic plates based on continuous GNSS stations data. The work investigates 2804 continuous GNSS stations located on Pacific, North American, Eurasian, African, Antarctic, Australian and South American plates during 2002-2021. The components of recent horizontal displacements of continuous GNSS stations have been determined and a map of their distribution pattern has been constructed. The absolute rotation pole in ITRF2014/IGS14 reference frame of the studied tectonic plates has been determined. The obtained values are in good agreement with modern plate models. The definition of average annual rotation poles has been developed and thei r analysis has been carried out to research the dynamics of their change in time. It has been established that the change in the average annual rotation poles of the North American, African and South American plates occurs synchronously, while their change is asynchronous to the Pacific plate. Simultaneous changes in the average annual rotation poles of Antarctic and African plates were have also been identified.
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基于连续GNSS站数据建立主要构造板块绝对自转极变化的相关性
本工作的目的是基于连续GNSS台站数据建立主要构造板块绝对自转极变化的相关性。这项工作调查了2002年至2021年期间位于太平洋、北美、欧亚、非洲、南极、澳大利亚和南美板块的2804个连续GNSS站。确定了连续GNSS站最近的水平位移分量,并绘制了其分布格局图。确定了研究板块在ITRF2014/IGS14参考系中的绝对旋转极。所得数值与现代板块模型吻合较好。提出了年平均自转极的定义,并对其进行了分析,研究了年平均自转极随时间的动态变化。已经确定北美、非洲和南美板块年平均旋转极的变化是同步的,而它们的变化与太平洋板块是不同步的。还确定了南极和非洲板块年平均旋转极的同步变化。
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来源期刊
Acta Geodynamica et Geomaterialia
Acta Geodynamica et Geomaterialia 地学-地球化学与地球物理
CiteScore
2.30
自引率
0.00%
发文量
12
期刊介绍: Acta geodynamica et geomaterialia (AGG) has been published by the Institute of Rock Structures and Mechanics, Czech Academy of Sciences since 2004, formerly known as Acta Montana published from the beginning of sixties till 2003. Approximately 40 articles per year in four issues are published, covering observations related to central Europe and new theoretical developments and interpretations in these disciplines. It is possible to publish occasionally research articles from other regions of the world, only if they present substantial advance in methodological or theoretical development with worldwide impact. The Board of Editors is international in representation.
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