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:
61343.0 2026 10 30 303 0.14139 0.31798 -0.053244 61344.0 2026 10 31 304 0.13983 0.31794 -0.053914 61345.0 2026 11 1 305 0.13802 0.31793 -0.054709 61346.0 2026 11 2 306 0.13630 0.31773 -0.055669 61347.0 2026 11 3 307 0.13501 0.31769 -0.056823 61348.0 2026 11 4 308 0.13396 0.31805 -0.058149 61349.0 2026 11 5 309 0.13290 0.31860 -0.059556 61350.0 2026 11 6 310 0.13168 0.31929 -0.060949 61351.0 2026 11 7 311 0.13018 0.31998 -0.062210 61352.0 2026 11 8 312 0.12854 0.32060 -0.063296 61353.0 2026 11 9 313 0.12695 0.32102 -0.064260 61354.0 2026 11 10 314 0.12541 0.32143 -0.065127 61355.0 2026 11 11 315 0.12401 0.32177 -0.065900 61356.0 2026 11 12 316 0.12271 0.32211 -0.066593 61357.0 2026 11 13 317 0.12148 0.32250 -0.067260 61358.0 2026 11 14 318 0.12026 0.32293 -0.067976 61359.0 2026 11 15 319 0.11908 0.32340 -0.068808 61360.0 2026 11 16 320 0.11790 0.32394 -0.069782 61361.0 2026 11 17 321 0.11673 0.32451 -0.070907 61362.0 2026 11 18 322 0.11557 0.32508 -0.072181 61363.0 2026 11 19 323 0.11441 0.32566 -0.073543