3D and 4D high resolution microgravity - case stories from mining and geoengineering

0357363 - GFÚ 2011 RIV NL eng C - Conference Paper (international conference)
Mrlina, Jan
3D and 4D high resolution microgravity - case stories from mining and geoengineering.
Barcelona '10. Workshops. Houten: EAGE, 2010, W209/1-W209/5. ISBN 978-90-73781-87-0.
[EAGE Conference & exhibition incorporationg SPE EUROPEC 2010 /72./. Barcelona (ES), 14.06.2010-17.06.2010]
Institutional research plan: CEZ:AV0Z30120515
Keywords : microgravity * mine monitoring systems * risk mitigation
Subject RIV: DE - Earth Magnetism, Geodesy, Geography

Gravimetry has a long tradition in various geological investigations. For regional exploration projects the accuracy of 0.2 - 0.5 mGal was sufficient for decades. Detailed surveys, on the other hand, and especially microgravity require not only high resolution of gravimeter's readings, but also high accuracy/repeatibility in the range of 0.00X mGal. Therefore, we also focused on the reduction of disturbing effects affecting microgravity measurements (wind, sun, rain, vibrations, etc.), but mainly on data processing. We developed special software for accurate determination of gravimeter system drift from field observations. This technique allows significant reduction of repeatibility error.
Permanent Link: http://hdl.handle.net/11104/0195654