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:
61128.0 2026 3 29 88 0.11863 0.40798 0.053686 61129.0 2026 3 30 89 0.12094 0.40874 0.052843 61130.0 2026 3 31 90 0.12280 0.40911 0.051947 61131.0 2026 4 1 91 0.12464 0.40944 0.050967 61132.0 2026 4 2 92 0.12637 0.41021 0.050028 61133.0 2026 4 3 93 0.12788 0.41124 0.049198 61134.0 2026 4 4 94 0.12958 0.41205 0.048553 61135.0 2026 4 5 95 0.13159 0.41266 0.048105 61136.0 2026 4 6 96 0.13357 0.41323 0.047889 61137.0 2026 4 7 97 0.13535 0.41364 0.047817 61138.0 2026 4 8 98 0.13697 0.41398 0.047754 61139.0 2026 4 9 99 0.13848 0.41422 0.047704 61140.0 2026 4 10 100 0.13983 0.41445 0.047622 61141.0 2026 4 11 101 0.14107 0.41463 0.047419 61142.0 2026 4 12 102 0.14229 0.41477 0.047027 61143.0 2026 4 13 103 0.14347 0.41490 0.046395 61144.0 2026 4 14 104 0.14463 0.41502 0.045507 61145.0 2026 4 15 105 0.14577 0.41511 0.044403 61146.0 2026 4 16 106 0.14691 0.41518 0.043182 61147.0 2026 4 17 107 0.14803 0.41522 0.041984 61148.0 2026 4 18 108 0.14912 0.41524 0.040956