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:
60858.0 2025 7 2 183 0.16365 0.43965 0.043889 60859.0 2025 7 3 184 0.16516 0.43930 0.044361 60860.0 2025 7 4 185 0.16663 0.43903 0.044926 60861.0 2025 7 5 186 0.16783 0.43860 0.045641 60862.0 2025 7 6 187 0.16923 0.43800 0.046600 60863.0 2025 7 7 188 0.17113 0.43784 0.047785 60864.0 2025 7 8 189 0.17335 0.43809 0.049093 60865.0 2025 7 9 190 0.17527 0.43824 0.050396 60866.0 2025 7 10 191 0.17652 0.43800 0.051755 60867.0 2025 7 11 192 0.17766 0.43744 0.053038 60868.0 2025 7 12 193 0.17871 0.43683 0.054203 60869.0 2025 7 13 194 0.17995 0.43613 0.055094 60870.0 2025 7 14 195 0.18123 0.43537 0.055669 60871.0 2025 7 15 196 0.18254 0.43462 0.055974 60872.0 2025 7 16 197 0.18382 0.43390 0.056108 60873.0 2025 7 17 198 0.18508 0.43319 0.056185 60874.0 2025 7 18 199 0.18630 0.43248 0.056320 60875.0 2025 7 19 200 0.18748 0.43176 0.056641 60876.0 2025 7 20 201 0.18863 0.43102 0.057235 60877.0 2025 7 21 202 0.18976 0.43026 0.058118 60878.0 2025 7 22 203 0.19087 0.42948 0.059213