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:
61237.0 2026 7 16 197 0.21299 0.37645 0.011543 61238.0 2026 7 17 198 0.21382 0.37528 0.011072 61239.0 2026 7 18 199 0.21480 0.37432 0.010456 61240.0 2026 7 19 200 0.21530 0.37333 0.009873 61241.0 2026 7 20 201 0.21548 0.37231 0.009450 61242.0 2026 7 21 202 0.21600 0.37142 0.009234 61243.0 2026 7 22 203 0.21699 0.37075 0.009209 61244.0 2026 7 23 204 0.21790 0.37014 0.009371 61245.0 2026 7 24 205 0.21860 0.36956 0.009750 61246.0 2026 7 25 206 0.21916 0.36916 0.010275 61247.0 2026 7 26 207 0.21949 0.36859 0.010858 61248.0 2026 7 27 208 0.21965 0.36793 0.011457 61249.0 2026 7 28 209 0.21971 0.36713 0.012013 61250.0 2026 7 29 210 0.21982 0.36627 0.012453 61251.0 2026 7 30 211 0.21996 0.36535 0.012702 61252.0 2026 7 31 212 0.22009 0.36436 0.012718 61253.0 2026 8 1 213 0.22021 0.36340 0.012502 61254.0 2026 8 2 214 0.22032 0.36249 0.012100 61255.0 2026 8 3 215 0.22043 0.36159 0.011593 61256.0 2026 8 4 216 0.22049 0.36068 0.011089 61257.0 2026 8 5 217 0.22051 0.35977 0.010684