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Possibilities of detection of seismic displacements in Central Europe by analysis of high-rate GPS

Hefty J., Gerhátová L.

Reports on Geodesy

2012

z. 2/93

25--33

The Precise Point Positioning (PPP) analysis technique adapted for monitoring of high - rate coordinate variations from GPS observations is applied for detection of actual displacements related to moderate and light earthquakes. Two approaches are examined: kinematic PPP which is suitable for larger displacements and analysis of residuals from quasi-static PPP which is suitable for detection of min or earthquake related displacements. The potential and limits of the se used methods are documented on M 6.3 L’Aquila earthquake and M 4.3 Tatabanya earthquake. Our experiments proved the ability to measure dynamic seismic-related short-term coordinate variations at sub-centimetre level with PPP using GPS 1 Hz satellites observations.

CEGRN 2003 solution and its relation to CEGRN 1994-2001 campaign results

Hefty J., Gerhátová L'., Stangl G., Cristea E., Kratochvíl R., Liwosz T.

Reports on Geodesy

2005

z. 2/73

33-40

Analysis strategy and results from CEGRN epoch campaign in 2003. Combined product based on individual network solutions by four analysis centres and its comparison with CEGRN 2001 coordinates. Time evolution of coordinates at some long-term observed CEGRN sites during seven epoch campaignssince 1994.

The network of permanent GPS stations in Central Europe as the reference for CERGOP related activities

Hefty J., Gerhátová L'., Igondová M., Kováč M., Hrčka M.

Reports on Geodesy

2004

nr 2/69

115--123

Reference for geodynamical projects in Central Europe based on permanent GPS observations in the region. Experiences from one-year interval of data analysis. Method of processing the permanent GPS data and inclusion of epoch campaigns.