Earth's Surface Displacements from the GPS Time Series

2nd International Conference on Innovative Materials, Structures and Technologies

Haritonova, D.^1,2 ; Balodis, J.^1 ; Janpaule, I.^1 ; Morozova, K.^1

University of Latvia, Institute of Geodesy and Geoinformatics, 19 Raina Blvd., Riga

LV-1586, Latvia^1

Riga Technical University, Faculty of Civil Engineering, Kalku Str. 1, Riga

LV-1658, Latvia^2

关键词: BERNESE softwares;    Coordinate time series;    Deformation modeling;    Horizontal displacements;    Negative velocities;    Precise point positioning;    Processing strategies;    Vertical displacements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/96/1/012039/pdf
DOI  :  10.1088/1757-899X/96/1/012039

来源: IOP

【 摘 要 】

The GPS observations of both Latvian permanent GNSS networks - EUPOS®-Riga and LatPos, have been collected for a period of 8 years - from 2007 to 2014. Local surface displacements have been derived from the obtained coordinate time series eliminating different impact sources. The Bernese software is used for data processing. The EUREF Permanent Network (EPN) stations in the surroundings of Latvia are selected as fiducial stations. The results have shown a positive tendency of vertical displacements in the western part of Latvia - station heights are increasing, and negative velocities are observed in the central and eastern parts. Station vertical velocities are ranging in diapason of 4 mm/year. In the case of horizontal displacements, site velocities are up to 1 mm/year and mostly oriented to the south. The comparison of the obtained results with data from the deformation model NKG-RF03vel has been made. Additionally, the purpose of this study is to analyse GPS time series obtained using two different data processing strategies: Precise Point Positioning (PPP) and estimation of station coordinates relatively to the positions of fiducial stations also known as Differential GNSS.