About the phenomenon of subsidence in continental Europe in December 2019 based on the GNSS stations data

Brusak, I.; Tretyak, K.

doi:10.3997/2214-4609.20205717

Cited by 5 publications

(6 citation statements)

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“…In December 2019, the altitude displacements lasting 4-10 days were recorded at all stations of the Geoterrace network [Brusak and Tretyak, 2020]. However, it is likely that similar geodynamic processes occurred during the whole network operation and were not observed.…”

Section: Fig 2 Duration and Integrity Of Time Series Of Solutions Of Permanent Gnss Stations Of Geoterrace Networkmentioning

confidence: 96%

“…In order to test this method, we will apply it to the already known altitude displacements in December 2019 [Brusak, & Tretyak, 2020]. We use data from SULP and MYKO stations of Geoterrace network.…”

Section: Algorithm Testing On a Known Geodynamic Processmentioning

confidence: 99%

“…Based on the analysis of short time series of daily solutions of GNSS (Global Navigation Satellite Systems) stations lasting 10-15 days, it is sometimes possible to detect abrupt changes in the spatial position of the station, as well as simultaneous similar displacements at neighboring stations or networks that cover large areas. One of such geodynamic processes is the altitude displacements of permanent GNSS stations of the European region recorded for 4-10 days in December 2019 [Brusak, & Tretyak, 2020]. The paper investigates the quantity of altitude displacements, establishes the spatial linearity and continentality of its allocation, and analyzes the values and velocities of daily displacements for more than 500 GNSS stations in Europe.…”

Section: Introductionmentioning

confidence: 99%

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Geodesy, Cartography, and Aerial Photography

Tretyak¹,

Brusak²

2021

ISTCGCAP

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Purpose. The purpose of this work is obtaining connections between the Baltic and European height systems based on the I class leveling between the Ukrainian and Polish control points of the base vertical networks and construction of the quasigeoid surface on the border area. Method. Full integration of the hight system of Ukraine into the European vertical reference system (EVRS) consists of two stages: modernization of the height network of Ukraine through its integration into the United European leveling network UELN; construction and use as a regional vertical date the model of high-precision quasigeoid, which will be consistent with the European geoid EGG2015. The analysis of methods of high-precision leveling in Ukraine and Poland, and also the analysis of methods of construction of quasigeoid models in these countries is performed. Results. For integrating the Ukrainian hight system into the UELN/EVRS2000 system, the Ukrainian side performed I class geometric leveling along two lines: Lviv - Shehyni - Przemysl and Kovel - Yagodyn - Chelm with total length of 196 km. The root mean square systematic error on both lines of leveling was s<0.01 mm/km. In turn, the mean square random error along the line Lviv - Shehyni - Przemysl is h=0.29 mm/km, and along the line Kovel - Yagodyn - Chelm is h=0.27 mm/km. For double control on the cross-border part, the Polish side performed high-precision leveling with a length of 33 km. The differences between the Ukrainian and Polish leveling in all sections are within the tolerance. The analysis of influence of geodynamic phenomena on control of high-precision leveling is carried out. GNSS-leveling was performed on all fundamental and ground benchmarks, as well as horizontal marks. These measurements were used to build a quasigeoid model for the border area of Ukraine. The MSE of the obtained quasigeoid model is about 2 cm, which corresponds to the accuracy of the input information. Scientific novelty and practical significance. The connection of the Ukrainian and European height systems will ensure Ukraine’s integration into the European economic system, participation in international research of global ecological and geodynamic processes, study of the Earth’s shape and gravitational field and mapping of Ukraine using navigational and remote-sensing satellite technologies. Calculation of a high-precision model of a quasigeoid on the Ukraine area in relation to the European height system, agreed with the European geoid EGG2015, will allow to obtain gravity-dependent heights using modern satellite technologies.

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Section: Fig 2 Duration and Integrity Of Time Series Of Solutions Of Permanent Gnss Stations Of Geoterrace Networkmentioning

confidence: 96%

Section: Algorithm Testing On a Known Geodynamic Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geodesy, Cartography, and Aerial Photography

Tretyak¹,

Brusak²

2021

ISTCGCAP

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“…Having analyzed the effects of the geodynamic phenomenon in December 2019, it is seen that within the European continent there were vertical displacements, which reached a subsidence of up to 30 mm for 5-10 days [Brusak & Tretyak 2020]. The study shows that for GNSS stations at a distance of less than 100 km from the Geoterrace network, namely CRNT (Chernivtsi), BLZT (Bilche-Zolote) and GORD (Gorodok) such subsidence reaches 16-19 mm (Fig.…”

Section: Vertical Displacements From 23 To 30 December 2019mentioning

confidence: 99%

“…The vertical displacements of permanent GNSS stations in the European region were recorded at the end of December 2019 during 4-10 days [Brusak, & Tretyak, 2020]. At a number of permanent GNSS stations, the vertical displacements correlate with models of atmospheric loadings in the European region.…”

Section: Introductionmentioning

confidence: 99%

Geodynamics

Tretyak¹,

Brusak²,

Bubniak³

et al. 2021

JGD

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The paper analyzes the vertical displacements of the GNSS sites of civil engineering structures caused by non-tidal atmospheric loading (NTAL). The object of the study is the Dnister Hydroelectric Power Plant №1 (HPP-1) and its GNSS monitoring network. The initial data are the RINEX-files of 14 GNSS stations of the Dnister HPP-1 and 8 permanent GNSS stations within a radius of 100 km, the NTAL model downloaded from the repository of German Research Centre for Geosciences GFZ for 2019-2021, and materials on the geological structure of the object. Methods include comparison and analysis of the altitude component of GNSS time series with model values of NTAL as well as interpretation of the geodynamic vertical displacements, taking into account the analysis of the geological structure. As a result, it was found that the sites of the GNSS network of the Dnister HPP-1 undergo less vertical displacements than the permanent GNSS stations within a radius of 100 km. This corresponds to the difference in thickness and density of the rocks under the GNSS sites and stations, so they undergo different elastic deformations by the same NTAL. In addition, the research detected different dynamics of vertical displacements of GNSS sites on the dam and on the river banks. It leads to cracks and deformations of concrete structures in the dam-bank contact zones. During the anomalous impact of NTAL, the altitude of even nearby sites can change if the geological structure beneath them is different. The work shows that for civil engineering structures it is necessary to apply special models to take into account NTAL deformations for high-precision engineering and geodetic measurements.

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Spaceborne SAR Interferometry or Time Machine for Geodetic Purposes

Kukhtar

2024

Springer Aerospace Technology

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About the phenomenon of subsidence in continental Europe in December 2019 based on the GNSS stations data

Cited by 5 publications

References 0 publications

Geodesy, Cartography, and Aerial Photography

Geodesy, Cartography, and Aerial Photography

Geodynamics

Spaceborne SAR Interferometry or Time Machine for Geodetic Purposes

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