Monitoring of the Long-Standing Changes of the Absolute Gravity in Observatory of Jozefoslaw and at Main Tectonic Units on Poland Territory

Mathematics – Logic

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

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 µGal on Satellite Lamkówko station, near Olsztyn, and 12 µGal 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 µGal. On very stable station Ojców (Seismic Observatory of the Polish Academy of Sciences) located on Swiętokrzyskie Mts. craton, the decrease of gravity equal to 9 µGal 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.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Monitoring of the Long-Standing Changes of the Absolute Gravity in Observatory of Jozefoslaw and at Main Tectonic Units on Poland Territory does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Monitoring of the Long-Standing Changes of the Absolute Gravity in Observatory of Jozefoslaw and at Main Tectonic Units on Poland Territory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitoring of the Long-Standing Changes of the Absolute Gravity in Observatory of Jozefoslaw and at Main Tectonic Units on Poland Territory will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1244407

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.