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:
61216.0 2026 6 25 176 0.20161 0.39449 0.011271 61217.0 2026 6 26 177 0.20250 0.39365 0.011613 61218.0 2026 6 27 178 0.20320 0.39268 0.012088 61219.0 2026 6 28 179 0.20380 0.39174 0.012700 61220.0 2026 6 29 180 0.20431 0.39083 0.013357 61221.0 2026 6 30 181 0.20479 0.38994 0.013998 61222.0 2026 7 1 182 0.20522 0.38923 0.014517 61223.0 2026 7 2 183 0.20543 0.38855 0.014856 61224.0 2026 7 3 184 0.20567 0.38766 0.014872 61225.0 2026 7 4 185 0.20619 0.38661 0.014671 61226.0 2026 7 5 186 0.20675 0.38565 0.014228 61227.0 2026 7 6 187 0.20743 0.38467 0.013645 61228.0 2026 7 7 188 0.20805 0.38369 0.012980 61229.0 2026 7 8 189 0.20861 0.38276 0.012310 61230.0 2026 7 9 190 0.20905 0.38187 0.011767 61231.0 2026 7 10 191 0.20940 0.38097 0.011464 61232.0 2026 7 11 192 0.20971 0.38006 0.011436 61233.0 2026 7 12 193 0.21000 0.37913 0.011628 61234.0 2026 7 13 194 0.21028 0.37820 0.011925 61235.0 2026 7 14 195 0.21056 0.37727 0.012152 61236.0 2026 7 15 196 0.21083 0.37634 0.012175