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    Wyświetlanie 1-10 z 10
    Tytuł:
    Geographic Information Systems (GIS) as a tool for interpretation of neotectonics in the Podhale area, Poland
    Autorzy:
    Hajdukiewicz, M.
    Szczerbowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/191818.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    neotectonics
    GIS
    photogrammetric
    GNSS observations
    Opis:
    A combination of approaches to the study of neotectonics is discussed. As an example, an analysis is presented for part of the Podhale region, where changes in the hydrogeological regime were observed. Comments are made on the manifestation of geological processes and principles in investigations of neotectonics, due to the results of precise digital terrain modelling (DTM) and geodetic surveys. The results obtained lead the authors to the conclusion that a reliable study on the geological activity of an area evaluated from considerations of river-channel morphology requires attention to changes in spatial development as a factor controlling the intensity of the hydrological regime. In such cases, a database of complex geodata information is required. A geodetic approach is presented, based on GNSS observations that become a new standard in geomorphologic studies. The results of GNSS observations provide quantitative estimates of displacements in the study area and allow assessment of their kinematics.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2016, 86, 1; 111-118
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of static GNSS positioning accuracy during selected normal and high ionospheric activity periods
    Autorzy:
    Savchuk, S.
    Hiryak, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/298171.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    ionosphere
    index I95
    magnetic activity
    single frequency GNSS observations
    dual frequency GNSS observations
    Opis:
    This article presents the results of the experimental research into the ionospheric influences on the accuracy of the GNSS measurements by comparing single and dual frequency GNSS observations. In the research, GNSS data from three reference stations in central Poland were used. The selection of the observation period depended on the calm and disturbed ionospheric conditions. The purpose of the research was to determine the differences between the control coordinates of the stations and the coordinates of these stations received after processing the results of single and dual frequency GNSS observations. For a better visibility, these differences were presented as horizontal and vertical components. The values of these components are compared with the global magnetic activity and regional ionospheric index I95. The results obtained show that the ionosphere has a considerable impact on single frequency GNSS measurements according to the geodetic requirements, although this impact depends more on the state of ionosphere rather than on its space-time changes.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(4); 299-311
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    Using GNSS technologies for research features vertical movements of the crust of Europe
    Zastosowanie technologii GNSS do badania pionowych ruchów skorupy ziemskiej w Europie
    Autorzy:
    Tretyak, K.
    Romaniuk, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/385651.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    geodynamika
    obserwacje GNSS
    litosfera
    prędkości pionowych ruchów skorupy ziemskiej
    struktura tektoniczna
    geodynamics
    GNSS observations
    litosphere
    speeds of vertical crustal movements
    tectonic structure
    Opis:
    In order to study the dynamics of vertical crustal movements it was processed database with 196 stations according to the results of GNSS-observations on the permanent stations. Based on the continuous series of observations we determined the changes of absolute and regional velocity of vertical crustal movements, their spatial distribution and relationship with the tectonic structure of the region. We made the maps of regional rates of vertical crustal movements in the period since 2000-2011. It was also investigated seismic activity in Europe during this period. The accumulated research results indicate the necessity for systematic studies of the impact of various geophysical factors on the stability and permanent displacement of plants and their relation to seismic activity.
    W celu zbadania dynamiki pionowych ruchów skorupy ziemskiej przetworzono wyniki obserwacji GNSS z 196 stacji permanentnych. Na podstawie ciągłej serii obserwacji stwierdzono zmiany absolutnej i regionalnych prędkości pionowych ruchów skorupy ziemskiej, analizowano ich rozmieszczenie przestrzenne i zależność od tektonicznej struktury regionu. Wykonano mapy rozkładu regionalnych pionowych ruchów skorupy ziemskiej w latach 2000-2011. Badano również aktywność sejsmiczną w Europie w tym okresie. Uzyskane wyniki wskazują na konieczność systematycznych badań wpływu różnych czynników geograficznych na stabilność kontynentu oraz potwierdzają związek między stałym przemieszczaniem się roślin a aktywnością sejsmiczną.
    Źródło:
    Geomatics and Environmental Engineering; 2013, 7, 2; 71-77
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prospects of metrological provision linear geodetic of measurements on the geodetic test field
    Autorzy:
    Trevoho, I. S.
    Tsyupak, I. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/224630.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    metrologia geodezyjna
    obserwacje GNNS
    poziomowanie GNNS
    sieci geodezyjne
    geodesic metrology
    working of standards
    test line of the geodetic basis
    fundamental geodetic network
    GNSS observations
    GNSS leveling
    Opis:
    This paper gives brief information on existing metrological support for the Yavoriv of scientific of the geodetic of test field (SGTF) for testing of modern of surveying equipment (rangefinders, electronic total stations and GNSS receivers). Analyzed ways to improve the fundamental geodetic network and the standard linear of basis, as working standards for testing, in accordance, GNSS receivers and a rangefinders, as well as for study an accuracy technology of GNSS leveling.
    Źródło:
    Reports on Geodesy; 2013, z. 1/94; 56-63
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    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:
    Dynamic Global Navigation Satellite System antenna position verification using raw pseudorange information
    Autorzy:
    Dyjak, M.
    Gucma, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/135589.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    Veripos System
    RTK observations
    GNSS verification
    twin antenna
    GNSS setup
    precise measurement
    Opis:
    This article presents a method of obtaining relative and global coordinates using the Global Navigation Satellite System (GNSS). Four GNSS antennas have been compared in this research. The GNSS antennas have been utilized by the Veripos and Septentrio Systems. Global Positioning System (GPS) pseudorange observations are used to obtain relative position of the GPS antennas. Relative positions are based on calculations made by the RTKLIB software. Lever arm range and bearing are used to assess accuracy of the true antenna location relative to the vessel Navigation Reference Point (NRP). The article deals with the problem of assessing the quality of real-time positioning equipment. Comparing results of the raw position calculation with the physical measurements shows the usefulness of the real – time position monitoring.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 76-81
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    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 1-10 z 10

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