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:
61045.0 2026 1 5 5 0.10554 0.33551 0.074356 61046.0 2026 1 6 6 0.10404 0.33628 0.074025 61047.0 2026 1 7 7 0.10252 0.33692 0.073469 61048.0 2026 1 8 8 0.10123 0.33741 0.072856 61049.0 2026 1 9 9 0.10061 0.33785 0.072258 61050.0 2026 1 10 10 0.10054 0.33854 0.071781 61051.0 2026 1 11 11 0.10050 0.33935 0.071443 61052.0 2026 1 12 12 0.10028 0.34003 0.071324 61053.0 2026 1 13 13 0.09986 0.34054 0.071425 61054.0 2026 1 14 14 0.09933 0.34098 0.071646 61055.0 2026 1 15 15 0.09875 0.34150 0.072017 61056.0 2026 1 16 16 0.09813 0.34204 0.072521 61057.0 2026 1 17 17 0.09753 0.34265 0.073079 61058.0 2026 1 18 18 0.09694 0.34332 0.073586 61059.0 2026 1 19 19 0.09637 0.34401 0.073931 61060.0 2026 1 20 20 0.09581 0.34471 0.074011 61061.0 2026 1 21 21 0.09525 0.34540 0.073784 61062.0 2026 1 22 22 0.09471 0.34607 0.073292 61063.0 2026 1 23 23 0.09417 0.34674 0.072621 61064.0 2026 1 24 24 0.09364 0.34742 0.071918 61065.0 2026 1 25 25 0.09312 0.34811 0.071285