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:
61322.0 2026 10 9 282 0.16725 0.32272 -0.030145 61323.0 2026 10 10 283 0.16629 0.32316 -0.031608 61324.0 2026 10 11 284 0.16521 0.32353 -0.032999 61325.0 2026 10 12 285 0.16376 0.32355 -0.034262 61326.0 2026 10 13 286 0.16203 0.32295 -0.035308 61327.0 2026 10 14 287 0.16029 0.32214 -0.036101 61328.0 2026 10 15 288 0.15862 0.32146 -0.036713 61329.0 2026 10 16 289 0.15712 0.32088 -0.037238 61330.0 2026 10 17 290 0.15567 0.32047 -0.037780 61331.0 2026 10 18 291 0.15416 0.32009 -0.038418 61332.0 2026 10 19 292 0.15279 0.31987 -0.039213 61333.0 2026 10 20 293 0.15150 0.31960 -0.040213 61334.0 2026 10 21 294 0.15027 0.31942 -0.041441 61335.0 2026 10 22 295 0.14904 0.31931 -0.042841 61336.0 2026 10 23 296 0.14784 0.31925 -0.044350 61337.0 2026 10 24 297 0.14664 0.31923 -0.045892 61338.0 2026 10 25 298 0.14538 0.31921 -0.047390 61339.0 2026 10 26 299 0.14410 0.31918 -0.048802 61340.0 2026 10 27 300 0.14282 0.31917 -0.050111 61341.0 2026 10 28 301 0.14155 0.31919 -0.051253 61342.0 2026 10 29 302 0.14029 0.31925 -0.052193