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:
61170.0 2026 5 10 130 0.16583 0.41438 0.031693 61171.0 2026 5 11 131 0.16701 0.41342 0.030976 61172.0 2026 5 12 132 0.16811 0.41247 0.030133 61173.0 2026 5 13 133 0.16906 0.41180 0.029176 61174.0 2026 5 14 134 0.16985 0.41164 0.028127 61175.0 2026 5 15 135 0.17054 0.41177 0.027150 61176.0 2026 5 16 136 0.17125 0.41212 0.026382 61177.0 2026 5 17 137 0.17193 0.41252 0.025913 61178.0 2026 5 18 138 0.17268 0.41289 0.025685 61179.0 2026 5 19 139 0.17345 0.41324 0.025673 61180.0 2026 5 20 140 0.17417 0.41329 0.025677 61181.0 2026 5 21 141 0.17491 0.41326 0.025426 61182.0 2026 5 22 142 0.17565 0.41309 0.024949 61183.0 2026 5 23 143 0.17643 0.41282 0.024270 61184.0 2026 5 24 144 0.17724 0.41250 0.023450 61185.0 2026 5 25 145 0.17807 0.41215 0.022577 61186.0 2026 5 26 146 0.17892 0.41185 0.021738 61187.0 2026 5 27 147 0.17976 0.41157 0.021010 61188.0 2026 5 28 148 0.18060 0.41130 0.020455 61189.0 2026 5 29 149 0.18141 0.41105 0.020110 61190.0 2026 5 30 150 0.18222 0.41077 0.019983