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:
61066.0 2026 1 26 26 0.09191 0.35365 0.070888 61067.0 2026 1 27 27 0.09195 0.35480 0.070511 61068.0 2026 1 28 28 0.09203 0.35607 0.070369 61069.0 2026 1 29 29 0.09186 0.35743 0.070389 61070.0 2026 1 30 30 0.09169 0.35882 0.070545 61071.0 2026 1 31 31 0.09173 0.36021 0.070667 61072.0 2026 2 1 32 0.09187 0.36146 0.070662 61073.0 2026 2 2 33 0.09194 0.36250 0.070385 61074.0 2026 2 3 34 0.09194 0.36349 0.069877 61075.0 2026 2 4 35 0.09207 0.36441 0.069263 61076.0 2026 2 5 36 0.09211 0.36534 0.068608 61077.0 2026 2 6 37 0.09226 0.36626 0.068000 61078.0 2026 2 7 38 0.09235 0.36719 0.067520 61079.0 2026 2 8 39 0.09241 0.36811 0.067236 61080.0 2026 2 9 40 0.09245 0.36899 0.067190 61081.0 2026 2 10 41 0.09245 0.36985 0.067388 61082.0 2026 2 11 42 0.09243 0.37070 0.067795 61083.0 2026 2 12 43 0.09244 0.37154 0.068333 61084.0 2026 2 13 44 0.09245 0.37235 0.068906 61085.0 2026 2 14 45 0.09247 0.37316 0.069390 61086.0 2026 2 15 46 0.09249 0.37397 0.069687