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Wyszukujesz frazę "vertical land movement" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Study of vertical movements of the European crust using tide gauge and GNSS observations
Autorzy:
Tretyak, K.
Dosyn, S.
Powiązania:
https://bibliotekanauki.pl/articles/106909.pdf
Data publikacji:
2014
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
vertical land movement
tide gauge
GNSS observations
sea level change
ruch pionowy ziemi
wskaźnik odpływu
obserwacje GNSS
zmiany poziomu morza
Opis:
This research is devoted to the study of vertical movements of the European crust on the basis of two independent methods, namely tide gauge and GNSS observations results. The description and classification of factors affecting sea level change has been made. The precision with which the movement of the earth's crust according to the results of tide gauge observations can be explored has been calculated. A methodology to identify the duration of tide gauge observations required for studies of vertical movements of the earth's crust has been presented. Approximation of tide gauge time series with the help of Fourier series has been implemented, the need for long-term observations in certain areas has been explained. The diagram of the velocities of the vertical movements of the European crust on the basis of the tide gauge data and GNSS observations has been built and the anomalous areas where the observations do not coincide have been identified.
Źródło:
Reports on Geodesy and Geoinformatics; 2014, 97; 112-131
2391-8365
2391-8152
Pojawia się w:
Reports on Geodesy and Geoinformatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of millimeter-scale deformations in Tallinn using repeated leveling and PS-InSAR analysis of Sentinel-1 data
Autorzy:
Oja, Tõnis
Gruno, Anti
Powiązania:
https://bibliotekanauki.pl/articles/43852782.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
interferometria SAR
wody gruntowe
sieć geodezyjna
SAR interferometry
repeated leveling
vertical land movement
groundwater level changes
geodetic network
Opis:
The aim of this study was to evaluate millimeter-scale deformations in Tallinn, the capital of Estonia, by using repeated leveling data and the synthetic aperture radar (SAR) images of Sentinel-1 satellite mission. The persistent scattered interferometric SAR (PS-InSAR) analysis of images from ascending and descending orbits from June 2016 to November 2021 resulted the line-of-sight (LOS) displacement velocities in the Tallinn city center. Velocity solutions were estimated for the full period of time, but also for shorter periods to monitor deformation changes in yearly basis. The gridded LOS velocity models were used for the decomposition of east-west and vertical velocities. Additionally, the uncertainty of 2D velocity solutions was estimated by following the propagation of uncertainty. The 3D velocity of permanent GNSS station “MUS2” in Tallinn was used to unify the reference of all PS-InSAR velocity solutions. The results of the latest leveling in Tallinn city center in 2007/2008 and 2019 showed rather small subsidence rates which were in agreement with InSAR long-termsolution. However, the short-termInSAR velocity solutions revealed larger subsidence of city center with a rate about –10 mm/yr in 2016–2017, and the uplift around 5 mm/yr in 2018–2019 with relatively stable periods in 2017–2018 and 2019–2021. The inclusion of groundwater level observation data and the geological mapping information into the analysis revealed possible spatiotemporal correlation between the InSAR results and the groundwater level variations over the deep valleys buried under quaternary sediments.
Źródło:
Advances in Geodesy and Geoinformation; 2023, 72, 1; art. no. e33, 2023
2720-7242
Pojawia się w:
Advances in Geodesy and Geoinformation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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