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    Wyświetlanie 1-5 z 5
    Tytuł:
    Investigation on reflection of tectonic pattern in ASG EUPOS data in the Sudetes and adjacent areas
    Autorzy:
    Szczerbowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/106837.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    neotectonics
    permanent GPS/GNSS observations
    lineaments
    horizontal displacements
    neotektonika
    obserwacja stała
    obserwacja GPS/GNSS
    lineamenty
    przemieszczenia poziome
    Opis:
    The GNSS data evaluated from on observation of ASG EUPOS stations in the Sudety Mts. and in adjacent areas is analyzed by the author in the scope of disturbances in daily solutions that can be induced by tectonics stress. The daily position changes derived from GNSS data demonstrate the long or short term trends, which are affected by offsets of different nature. Author presents an analysis based on frequency of parameter – displacement vector azimuth. The aim of the analysis is to show statistical significance of observed small values of temporal displacements, which values are not normally distributed. There are “outliers” of the normal distribution of displacement azimuths, which values show a certain reproducibility, which corresponds to orientations of tectonic lines. That suggests small, short time movements along boundaries of horsts and grabens – a crustal-extension structure of the area. However derived results (values of displacements) are less than a limitation error, temporal distributions of coordinates are not random as usually data errors. So in author’s opinion the spatial-temporal evolution of horizontal displacements of ASG EUPOS stations in the Sudety Mts. and in adjacent areas are determined by expressions of underlying geological structures.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2016, 102; 32-51
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High-energy seismic events in Legnica-Głogów Copper District in light of ASG-EUPOS data
    Autorzy:
    Szczerbowski, Zbigniew
    Powiązania:
    https://bibliotekanauki.pl/articles/106865.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    neotectonics
    permanent GPS/GNSS observations
    horizontal displacements mining tremors
    neotektonika
    stałe obserwacje GPS / GNSS
    przemieszczenia poziome
    wstrząsy górnicze
    Opis:
    Seismic events in the area of Poland are related mostly to copper and coal mining, and they are regarded as the most dangerous natural hazard. Although development of geomechanical modelling as the development of geophysical methods determining seismic hazard are evident, low predictability of the time-effect relationship still remains. Geomechanical models as geophysical data analysis highlight the interaction between parts of rock mass or allow to reconstruct the way of rock mass destruction and to understand the processes that take place in the high-energy tremors. However, the association of larger mining tremors with pre-existing geological features has been reported by many investigators; in geomechanical practice, investigations of rock mass condition concentrate on this problem in the local scale. Therefore, the problem of relations between high-energy seismic events in Legnica–Głogów Copper District (LGCD) and regional scale deformations of terrain surface resulting from possible tectonic activity is discussed in this paper. The GNSS data evaluated from the observations of ASG-EUPOS (Active Geodetic Network – EUPOS) stations in the area of LGCD and in the adjacent areas is analysed in this study. Temporal variation of distances between the stations and evaluated on that base so called apparent strain was combined with the occurrence of high-energy tremors. Consequently, after the examination and analysis of occurrences of mining tremors, it is found that high-energy seismic events and periods of strain accumulation evaluated from GPS/GNSS data have temporal relations. Although the seismic events were triggered by mining, nearly all the events with energy E > 108 J occurred in the periods when the analysed stations’ positions demonstrated a decrease in the baseline length.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2019, 107; 25-40
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    Complex geodetic research in Ukrainian Antarctic station "Academician Vernadsky" (years 2002-2005, 2013-2014)
    Autorzy:
    Tretyak, K.
    Hlotov, V.
    Holubinka, Y.
    Marusazh, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/106826.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    Argentinian islands
    glacier
    terrestrial laser scanning
    digital stereo photogrammetric survey
    penola strain tectonic fault
    GNSS observations
    geodynamic polygon
    wyspy argentyńskie
    lodowiec
    skanowanie laserowe naziemne
    badanie fotogrametryczne
    uskok tektoniczny
    obserwacje GNSS
    poligon geodynamiczny
    Opis:
    In this paper is given an information about complex geodetic research in Ukrainian Antarctic station “Academician Vernadsky”. Research were carried by Lviv polytechnic scientists, during Antarctic expeditions in years 2002 - 2005, 2013, 2014. Main objectives of the studies were: (a) study of the islands glaciers surface volumes changes in Antarctic archipelago and Antarctic Peninsula using terestrial laser scaning and digital terrestrial stereophotogrammetry survey; (b) investigation of Penola strain tectonic fault, using the results of precise GNSS observations.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2016, 100; 149-163
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Short-term and long-term variability of antenna position due to thermal bending of pillar monument at permanent GNSS station
    Autorzy:
    Gerhatova, L.
    Hefty, J.
    Spanik, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/106753.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    precise inclination sensor observations
    GNSS monument instability
    thermal deformations
    obserwacje
    czujnik pochylenia
    GNSS
    odkształcenia termiczne
    Opis:
    The variability of daily site coordinates at permanent GNSS station is a sum of many disturbing factors influencing the actual satellite observations, data processing, and bias modelling. In the paper are analysed possibilities of monitoring the instability of GNSS antenna pillar monument by the independent observations using the precise inclination sensor. Long-term series from three different types of pillars show specific features in amplitude and temporal evolution of monument bending. Correlations with daily temperature and/or solar radiation changes were proved.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2016, 100; 67-77
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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