Applications and Experience of using an FG5 Absolute Gravimeter in Geodesy

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• Victoria Smith (NERC)
• Wednesday 15 January 2014, 14:00-15:00
• Physics East 217.

If you have a question about this talk, please contact Vincent Boyer.

As we strive to understand the processes affecting our planet increasing demands are being placed upon the accuracy of measurements from traditional geodetic stations, and therefore improvements are sought in ways to enhance knowledge of any un-modelled deformations of the Earth’s crust which could affect the stations themselves.

The Herstmonceux Geodetic Observatory has been operating an FG5 absolute gravimeter (AG) since 2006 in an effort to resolve any signals which are undetected by the Satellite Laser Ranger (SLR) or Global Navigation Satellite Systems (GNSS) but which could be affecting those measurements and our contribution to the International Terrestrial Reference Frame (ITRF). The gravimeter provides measurements related to vertical motion of the site that are independent of those derived from satellite geodesy and perhaps has an advantage over those techniques in its ability to resolve any high frequency, low amplitude, un-modelled signals.

We will investigate the six year time series of gravity data and discuss quite literally the ups and downs and instrumental quirks found in nearly seven years of working with the FG5 .

This talk is part of the Cold Atoms series.

This talk is included in these lists:

• Bham Talks
• Cold Atoms
• Physics East 217
• What's on in Physics?

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