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:
60962.0 2025 10 14 287 0.20715 0.32582 0.093997 60963.0 2025 10 15 288 0.20530 0.32510 0.094481 60964.0 2025 10 16 289 0.20339 0.32438 0.094741 60965.0 2025 10 17 290 0.20145 0.32371 0.094759 60966.0 2025 10 18 291 0.19953 0.32297 0.094576 60967.0 2025 10 19 292 0.19792 0.32236 0.094298 60968.0 2025 10 20 293 0.19646 0.32207 0.093963 60969.0 2025 10 21 294 0.19493 0.32210 0.093661 60970.0 2025 10 22 295 0.19329 0.32238 0.093464 60971.0 2025 10 23 296 0.19155 0.32266 0.093440 60972.0 2025 10 24 297 0.18990 0.32265 0.093507 60973.0 2025 10 25 298 0.18829 0.32248 0.093701 60974.0 2025 10 26 299 0.18682 0.32216 0.094012 60975.0 2025 10 27 300 0.18549 0.32174 0.094371 60976.0 2025 10 28 301 0.18428 0.32130 0.094704 60977.0 2025 10 29 302 0.18314 0.32088 0.094921 60978.0 2025 10 30 303 0.18204 0.32051 0.094932 60979.0 2025 10 31 304 0.18097 0.32016 0.094677 60980.0 2025 11 1 305 0.17991 0.31982 0.094130 60981.0 2025 11 2 306 0.17886 0.31948 0.093325 60982.0 2025 11 3 307 0.17782 0.31914 0.092355