Effect of laser and clock stability and meteorological conditions on gravity surveyed with the A10 free-fall gravimeter - first results

• Autorzy: Sekowski M. , Krynski J. , Dykowski P. , Mäkinen J.
• Języki publikacji: EN

Abstrakty

EN

The Institute of Geodesy and Cartography in Warsaw, Poland, operates the A10-020 free-fall portable gravimeter since November 2008. Numerous gravity measurements with the A10-020 gravimeter, conducted under both laboratory and field conditions, provide a unique material for the estimation of accuracy as well as reliability of the determined gravity. Time series of regular, monthly measurements conducted with the A10-020 at the Borowa Gora Geodetic-Geophysical Observatory for over two years at two laboratory test sites and one field station has been analysed in terms of their internal consistency and compliance with the previous measurements performed with a few other absolute gravimeters (mainly FG5). The results of a number of calibrations of both, the rubidium oscillator and the polarization-stabilized laser interferometer of the A10-020 were considered in the analysis. The effect of applying the frequency standard as well as laser interferometer calibration data on the quality of gravity determined was investigated. In addition, the impact of weather conditions as well as variability of metrological parameters on surveyed gravity was taken into consideration when evaluating accuracy and reliability of gravity survey with the A10 gravimeter. Also the possibility of the occurrence of gross errors in gravity determination with the A10 gravimeter was discussed.

Słowa kluczowe

EN

gravimetric survey; absolute gravimeter; metrological parameters; metrology

PL

badania grawimetryczne; parametry metrologiczne; metrologia

• Wydawca: Wydział Geodezji i Kartografii Politechniki Warszawskiej
• Czasopismo: Reports on Geodesy
• Rocznik: 2012
• Tom: z. 1/92
• Strony: 47--59
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Sekowski M.

• Institute of Geodesy and Cartography, Warsaw, Poland

autor

Krynski J.

• Institute of Geodesy and Cartography, Warsaw, Poland

autor

Dykowski P.

• Institute of Geodesy and Cartography, Warsaw, Poland

autor

Mäkinen J.

• Finish Geodetic Institute, Masala, Finland

Bibliografia

• [1] Falk, R., J. Müller, N. Lux, H. Wilmes, H. Wzionek (2009). Precise gravimetric surveys with the field absolute gravimeter A-10, in IAG Scientific Assembly Symposium 2009 “Geodesy for Planet Earth”, Springer, Buenos Aires, Argentina, 31 August – 4 September 2009.
• [2] Fukuda, Y., J. Nishijima, T. Hasegawa, Y. Sofyan, M. Taniguchi (2010a). Monitoring groundwater variations using A10 absolute gravimeter, in Proceedings IAG Symposium on Terrestrial Gravimetry: Static and Mobile Measurements (TG-SMM2010), 22–25 June 2010, Russia, Saint Petersburg.
• [3] Fukuda, Y., J. Nishijima, M. Makoto, Tanigushi (2010b). Precision, Repeatability and Accuracy of A10 Absolute Gravimeter, American Geophysical Union, Fall Meeting 2010.
• [4] Krynski, J., P. Roguski (2009). A-10 absolute gravimeter for geodesy and geodynamics, in Symposium of the IAG Subcommission for Europe (EUREF) held in Florence, Italy, 27–29 May 2009, EUREF publication No 19, Mitteilungen des Bundesamtes für Kartographie und Geodäsie, Frankfurt am Main (in press).
• [6] Krynski, J., M. Sekowski (2010). Surveying with the A10-020 Absolute Gravimeter for geodesy and geodynamics – first results, Reports on Geodesy 88(1), 27–35, eGU General Assembly.
• [7] Krynski, J., M. Sekowski, J. Mäkinen (2010b). The Use of the A10-020 Gravimeter for the Modernization of the Finnish First Order Gravity Network, Geoinformation Issues 2(1), 5–16.
• [7] Micro-g LaCoste Inc. (2008). A10 Portable Gravimeter User’s Manual pages 59.
• [8] MIKES (2009). Certificate of Calibration M-09L268.
• [9] MIKES (2010aa). Certificate of Calibration M-10E084.
• [10] MIKES (2010ab). Certificate of Calibration M-10L256.
• [11] MIKES (2010b). Certificate of Calibration M-10E115.
• [12] MIKES (2010c). Certificate of Calibration M-10L157.
• [13] Niebauer, T., G. Sasagawa, J. Faller, R. Hilt, F. Klopping (1995). A new generation of absolute gravimeters, Metrologia 32, 159–180.
• [14] Schmerge, D., O. Francis (2006). Set standard deviation, repeatability and offset of absolute gravimeter A10-008, Metrologia 43, 414–418.