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:
61005.0 2025 11 26 330 0.13608 0.31444 0.084178 61006.0 2025 11 27 331 0.13509 0.31498 0.083739 61007.0 2025 11 28 332 0.13428 0.31520 0.083020 61008.0 2025 11 29 333 0.13340 0.31533 0.082068 61009.0 2025 11 30 334 0.13250 0.31564 0.080959 61010.0 2025 12 1 335 0.13149 0.31598 0.079817 61011.0 2025 12 2 336 0.13024 0.31612 0.078783 61012.0 2025 12 3 337 0.12900 0.31614 0.078008 61013.0 2025 12 4 338 0.12798 0.31612 0.077512 61014.0 2025 12 5 339 0.12714 0.31609 0.077361 61015.0 2025 12 6 340 0.12628 0.31613 0.077449 61016.0 2025 12 7 341 0.12545 0.31627 0.077616 61017.0 2025 12 8 342 0.12459 0.31651 0.077696 61018.0 2025 12 9 343 0.12365 0.31678 0.077592 61019.0 2025 12 10 344 0.12264 0.31706 0.077310 61020.0 2025 12 11 345 0.12158 0.31734 0.076919 61021.0 2025 12 12 346 0.12053 0.31762 0.076486 61022.0 2025 12 13 347 0.11948 0.31789 0.076070 61023.0 2025 12 14 348 0.11841 0.31817 0.075736 61024.0 2025 12 15 349 0.11735 0.31847 0.075513 61025.0 2025 12 16 350 0.11630 0.31878 0.075429