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:
61148.0 2026 4 18 108 0.14757 0.41540 0.040543 61149.0 2026 4 19 109 0.14839 0.41569 0.039773 61150.0 2026 4 20 110 0.14922 0.41598 0.039282 61151.0 2026 4 21 111 0.15006 0.41608 0.038992 61152.0 2026 4 22 112 0.15090 0.41632 0.038838 61153.0 2026 4 23 113 0.15171 0.41674 0.038642 61154.0 2026 4 24 114 0.15257 0.41721 0.038307 61155.0 2026 4 25 115 0.15358 0.41784 0.037787 61156.0 2026 4 26 116 0.15455 0.41856 0.037062 61157.0 2026 4 27 117 0.15526 0.41924 0.036301 61158.0 2026 4 28 118 0.15601 0.41963 0.035409 61159.0 2026 4 29 119 0.15660 0.41989 0.034457 61160.0 2026 4 30 120 0.15726 0.42004 0.033616 61161.0 2026 5 1 121 0.15801 0.42009 0.032940 61162.0 2026 5 2 122 0.15884 0.42013 0.032455 61163.0 2026 5 3 123 0.15974 0.42016 0.032143 61164.0 2026 5 4 124 0.16065 0.42020 0.031975 61165.0 2026 5 5 125 0.16155 0.42025 0.031928 61166.0 2026 5 6 126 0.16245 0.42028 0.031952 61167.0 2026 5 7 127 0.16334 0.42030 0.032008 61168.0 2026 5 8 128 0.16424 0.42029 0.032018