Absolute Gravimetry
Small changes in height cause detectable differences in the strength of the gravitational field experienced by a falling object.
The purpose of running an AG at the SGF Herstmonceux is to provide a long-term data set which can provide vertical height movements independent of those from the space based geodetic techniques. A long-term aim is to investigate the Global Isostatic Adjustment (GIA) signal from this region.
AG data has been collected at Herstmonceux since 2006 and it has been shown that there are signals within the data which are of interest and should be removed. The signals detected are on various time scales and from various of sources. Investigations are being carried out on tidal, atmospheric and hydrological responses.
Earth Orientation Parameters:
61086.0 2026 2 15 46 0.10152 0.37778 0.069646 61087.0 2026 2 16 47 0.10190 0.37851 0.069906 61088.0 2026 2 17 48 0.10252 0.37954 0.069892 61089.0 2026 2 18 49 0.10314 0.38074 0.069567 61090.0 2026 2 19 50 0.10388 0.38163 0.068982 61091.0 2026 2 20 51 0.10489 0.38239 0.068283 61092.0 2026 2 21 52 0.10590 0.38344 0.067583 61093.0 2026 2 22 53 0.10671 0.38470 0.067011 61094.0 2026 2 23 54 0.10725 0.38582 0.066583 61095.0 2026 2 24 55 0.10750 0.38665 0.066393 61096.0 2026 2 25 56 0.10780 0.38737 0.066513 61097.0 2026 2 26 57 0.10800 0.38788 0.066831 61098.0 2026 2 27 58 0.10829 0.38835 0.067199 61099.0 2026 2 28 59 0.10864 0.38883 0.067482 61100.0 2026 3 1 60 0.10905 0.38937 0.067578 61101.0 2026 3 2 61 0.10950 0.38994 0.067444 61102.0 2026 3 3 62 0.10994 0.39052 0.067110 61103.0 2026 3 4 63 0.11037 0.39110 0.066650 61104.0 2026 3 5 64 0.11078 0.39167 0.066158 61105.0 2026 3 6 65 0.11120 0.39224 0.065719 61106.0 2026 3 7 66 0.11159 0.39278 0.065393