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:
60875.0 2025 7 19 200 0.19192 0.43470 0.056332 60876.0 2025 7 20 201 0.19290 0.43408 0.056808 60877.0 2025 7 21 202 0.19388 0.43359 0.057487 60878.0 2025 7 22 203 0.19492 0.43326 0.058329 60879.0 2025 7 23 204 0.19597 0.43295 0.059194 60880.0 2025 7 24 205 0.19716 0.43266 0.060018 60881.0 2025 7 25 206 0.19849 0.43231 0.060664 60882.0 2025 7 26 207 0.19962 0.43171 0.061061 60883.0 2025 7 27 208 0.20063 0.43095 0.061276 60884.0 2025 7 28 209 0.20198 0.43035 0.061345 60885.0 2025 7 29 210 0.20304 0.42972 0.061415 60886.0 2025 7 30 211 0.20436 0.42919 0.061535 60887.0 2025 7 31 212 0.20555 0.42858 0.061778 60888.0 2025 8 1 213 0.20667 0.42792 0.062221 60889.0 2025 8 2 214 0.20776 0.42715 0.062904 60890.0 2025 8 3 215 0.20877 0.42627 0.063818 60891.0 2025 8 4 216 0.20975 0.42533 0.064922 60892.0 2025 8 5 217 0.21075 0.42436 0.066148 60893.0 2025 8 6 218 0.21173 0.42335 0.067412 60894.0 2025 8 7 219 0.21270 0.42230 0.068591 60895.0 2025 8 8 220 0.21364 0.42125 0.069550