GPS data analysis and geodetic velocity field investigation in Greece, 2001–2016

IF 4.5 1区地球科学 Q1 REMOTE SENSING

GPS Solutions Pub Date : 2023-10-30 DOI:10.1007/s10291-023-01549-8

Stylianos Bitharis, Christos Pikridas, Aristeidis Fotiou, Dimitrios Rossikopoulos

引用次数: 0

Abstract

Abstract In this study, an updated crustal velocity field for the Greece area was estimated using a time series analysis that covers a duration of 16 years (2001–2016) from 227 Global Navigation Satellite System (GNSS) permanent stations. The GPS processing was carried out using GNSS Analysis software at MIT (GAMIT) and the velocity field expressed with respect to Eurasian plate. For the time series analysis, we applied a robust Median Interannual Difference Adjusted for Skewness trend estimator to mitigate the effects of discontinuities due to geophysical phenomena on the estimation of geodetic velocities and their uncertainties. The main earthquake events that occurred in the GPS time series analysis in the study area are analyzed, providing the co-seismic displacements in the permanent GNSS stations. We also compare our geodetic velocities with five previous publications, where we found consistency at the mm/year level, leading to reliable results for the geodynamic behavior of the Greek area, providing a dense velocity field.

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2001-2016年希腊GPS数据分析与大地速度场调查

在这项研究中，利用227个全球导航卫星系统(GNSS)永久站的时间序列分析，估计了希腊地区更新的地壳速度场，该时间序列分析涵盖了16年(2001-2016)的时间。利用麻省理工学院(MIT)的GNSS分析软件(GAMIT)进行GPS处理，并将速度场表示为相对于欧亚板块。对于时间序列分析，我们采用稳健的中位数年际差校正偏度趋势估计器，以减轻地球物理现象引起的不连续性对大地速度估计及其不确定性的影响。对研究区GPS时间序列分析中发生的主要地震事件进行了分析，并提供了永久GNSS站的同震位移。我们还将我们的大地测量速度与之前的五份出版物进行了比较，在这些出版物中，我们发现了毫米/年水平的一致性，从而为希腊地区的地球动力学行为提供了可靠的结果，提供了密集的速度场。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

GPS Solutions 工程技术-遥感

CiteScore

8.10

自引率

12.20%

发文量

138

审稿时长

3.1 months

期刊介绍： GPS Solutions is a scientific journal. It is published quarterly and features system design issues and a full range of current and emerging applications of global navigation satellite systems (GNSS) such as GPS, GLONASS, Galileo, BeiDou, local systems, and augmentations. Novel, innovative, or highly demanding uses are of prime interest. Areas of application include: aviation, surveying and mapping, forestry and agriculture, maritime and waterway navigation, public transportation, time and frequency comparisons and dissemination, space and satellite operations, law enforcement and public safety, communications, meteorology and atmospheric science, geosciences, monitoring global change, technology and engineering, GIS, geodesy, and others. GPS Solutions addresses the latest developments in GNSS infrastructure, mathematical modeling, algorithmic developments and data analysis, user hardware, and general issues that impact the user community. Contributions from the entire spectrum of GNSS professionals are represented, including university researchers, scientists from government laboratories, receiver industry and other commercial developers, public officials, and business leaders.