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Wyświetlanie 1-5 z 5
Tytuł:
Activities of gravimertic laboratory at Józefosław Astro-geodetic Observatory in the frame of geodynamic investigations
Autorzy:
Barlik, M.
Bogusz, J.
Olszak, T.
Powiązania:
https://bibliotekanauki.pl/articles/224485.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
grawimetria
obserwatorium astronomiczno-geodezyjne
siła ciężkości
obserwacje grawimetryczne
gravimetry
astro-geodetic observatory
gravity
gravimetric observations
Źródło:
Reports on Geodesy; 2006, z. 1/76; 129-138
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Activities of Józefosław Astro-Geodetic Observatory in the last five decades
Autorzy:
Rogowski, J.B.
Barlik, M.
Litwosz, T.
Kruczyk, M.
Kujawa, L.
Rajner, M.
Olszak, T.
Kurka, W.
Powiązania:
https://bibliotekanauki.pl/articles/225082.pdf
Data publikacji:
2010
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
Obserwatorium Astronomiczno–Geodezyjne w Józefosław
historia
Astronomical-Geodetic Observatory in Józefosław
history
Opis:
Astro-Geodetic Observatory in Józefosław, witch belongs to the Departament of Geodesy and Geodetic Astronomy of the Warsaw University of Technology, started to permanent observations in 1958. First of them was time service started in February 1958, coordinated by BIH. From 1959 astrometrial latitude measurements have been done with aim to determine the parameters of the Earth rotation. In 1991 the Observatory was joned to the International GPS Service for Geodynamics (IGS) and started to operate as a permanent one in 1993. There have been performed many observations and scientific researches, such as: GPS in the frame of IGS/IGLOS/EUREF; tidal observations; absolute gravity measurements; changes of the vertical, based on the gravimetric measurements; astrometric observations and metrology. Moreover studies on RTK and DGPS measurements using mobile phone for data transmision are performed since 1998. WUT EUREF Lokal Analysis Centre, one of the 17 Lokal Analysis Centres acting in Europe, is a very important part of the Observatory. The Centre makes continuous service of one-week and daily aolution in the farme of EPN network, processes national and international GPS campaigns (CEGRN, EXTENDED SAGET etc.), models ionosphere and troposphere parameters, compute tidal components and changes of the vertical according to astrometric and gravimetric measurenents. This paper present history and current state of the art of the Observatory's activites.
Źródło:
Reports on Geodesy; 2010, z. 2/89; 31-52
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of the long-standing changes of the absolute gravity in Observatory of Józefosław and at main tectonics units of Poland territory
Autorzy:
Barlik, M.
Olszak, T.
Pachuta, A.
Próchniewicz, D.
Powiązania:
https://bibliotekanauki.pl/articles/224705.pdf
Data publikacji:
2009
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
Obserwatorium Astronomiczno-Geodezyjne w Józefosławiu
pomiary grawimetryczne
Astronomical-Geodetic Observatory in Józefosław
gravimetric measurements
Opis:
Gravimetric investigations of the long-standing, not tidal variations of the absolute gravity using ballistic FG - 5 No. 230 gravity meter, bought by Warsaw University of Technology at 2005, were performed on four stations outside the Teisseyre - Tornquist Zone (T - T Zone) as well as at Józefoslaw Astro - Geodetic Observatory of the Warsaw University of Technology, located near Warsaw, near the northern edge of T - T zone on Precambrian Platform. Raw results of observations were corrected by Earth's tide influences, loading effects of the Earth's crust and ocean, by polar motion influence to the gravity as well as from the reason of gravitational and deformation influences of the atmosphere. Monitoring of the gravity on Józefosław station, during three years once a month, pointed out quasi-periodic non-tidal variations. Absolute gravity determinations in previous campaigns (1992 - 2001) on Polish territory were performed using various ballistic gravity meters, many types and quality, as well as there were spread in time. In epochs since 2006 to 2008 with our instrument FG - 5 No. 230 there were obtained the gravity values minor on all investigated stations. It was about 17 žGal on Satellite Lamkówko station, near Olsztyn, and 12 žGal in Borowiec Astro Geodynamical Observatory of the Space Research Centre, Polish Academy of Sciences with comparison to the results from 8 - 10 y earlier obtained using Polish absolute gravity meter ZZG, Italian IMGC and two FG-5 instruments from Austria and USA. The variation since 1996 to 2006 on Giby (station of the gravity national fundamental net) was appeared as only 7.5 žGal. On very stable station Ojców (Seismic Observatory of the Polish Academy of Sciences) located on Świętokrzyskie Mts. craton, the decrease of gravity equal to 9 žGal has been noticed after 9 years. Recovered variations of gravity on Poland territory might have the sources in gravity global or regional variations in the hydrological influences in the vicinity of stations as well as in incorrect earlier determinations of the gravimetric corrections, mainly in vertical gradient of gravity above absolute stations.
Źródło:
Reports on Geodesy; 2009, z. 1/86; 61-68
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Absolute gravimetric determinations of long-standing non-tidal gravity changes in Józefosław Astro - Geodetic Observatory of Warsaw Universitety of Technology and at main tectonic units on Poland territory
Autorzy:
Barlik, M.
Olszak, T.
Pachuta, A.
Próchniewicz, D.
Powiązania:
https://bibliotekanauki.pl/articles/225075.pdf
Data publikacji:
2010
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
pomiary grawimetryczne
Obserwatorium Astronomiczno – Geodezyjnego w Józefosławiu
gravimetric measurements
Astronomical-Geodetic Observatory in Józefosław
Źródło:
Reports on Geodesy; 2010, z. 2/89; 11-19
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogeologiczne przyczyny zmian przyspieszenia siły ciężkości na stanowisku w Obserwatorium Astronomiczno-Geodezyjnym w Józefosławiu
Hydrogeological influences in the absolute gravity changes at Astro-Geodetic Observatory in Józefosław
Autorzy:
Olszak, T.
Barlik, M.
Pachuta, A.
Powiązania:
https://bibliotekanauki.pl/articles/2075765.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
siła ciężkości
pole siły ciężkości
płyta Bouguera
efekt hydrogeologiczny
absolute gravimetry
gravity field
Bouguerplate
hydrogeological effect
Opis:
The article presents the results of measurements of gravity performed in the Astronomical and Geodetic Observatory Józefosław. Time series have been verified for parameters related to celestial bodies, atmospheric pressure changes and metrological factors. The analysis of these changes includes geodynamic and hydrological aspects taking into account global and local changes in groundwater levels. The aim of the article is to indicate the interpretation of contemporary measurements of gravity field against the contemporary accuracy of such measurements and to indicate the need for information on the level of groundwater (collected by the Polish Hydrogeological Survey) in procedures for the elaboration and interpretation ofgravimetric measurements and supportfrom hydrogeologists. Contemporary the gravity measurements with use of absolute gravimeters gives possibility determination of gravity value with uncertainty of the order 10-8 ms-2. Such accuracy corresponds to a vertical displacement of a point of less than 1 cm or a change in the water level of 2.5 cm. Use of gravimetric methods in the broadly understood Earth sciences must be supported by information related to changes in mass distribution around the measuring station, mainly related to the groundwater level changes. This allows to see the role of hydrogeological information related to the monitoring of groundwater as an indispensable information describing changes in the Earth’s gravity field.
Źródło:
Przegląd Geologiczny; 2017, 65, 11/1; 1139--1143
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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