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:
60777.0 2025 4 12 102 0.06740 0.39384 0.034541 60778.0 2025 4 13 103 0.06796 0.39533 0.033979 60779.0 2025 4 14 104 0.06861 0.39640 0.033563 60780.0 2025 4 15 105 0.06917 0.39741 0.033328 60781.0 2025 4 16 106 0.06976 0.39844 0.033282 60782.0 2025 4 17 107 0.07042 0.39947 0.033449 60783.0 2025 4 18 108 0.07124 0.40063 0.033719 60784.0 2025 4 19 109 0.07213 0.40221 0.033994 60785.0 2025 4 20 110 0.07310 0.40397 0.034259 60786.0 2025 4 21 111 0.07452 0.40545 0.034430 60787.0 2025 4 22 112 0.07562 0.40708 0.034416 60788.0 2025 4 23 113 0.07705 0.40841 0.034122 60789.0 2025 4 24 114 0.07836 0.40966 0.033528 60790.0 2025 4 25 115 0.07958 0.41085 0.032682 60791.0 2025 4 26 116 0.08073 0.41196 0.031726 60792.0 2025 4 27 117 0.08183 0.41299 0.030860 60793.0 2025 4 28 118 0.08292 0.41395 0.030251 60794.0 2025 4 29 119 0.08401 0.41486 0.029989 60795.0 2025 4 30 120 0.08511 0.41574 0.030068 60796.0 2025 5 1 121 0.08621 0.41659 0.030384 60797.0 2025 5 2 122 0.08733 0.41741 0.030798