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:
59436.0 2021 8 10 222 0.25097 0.36747 -0.135087 59437.0 2021 8 11 223 0.25028 0.36533 -0.134507 59438.0 2021 8 12 224 0.24989 0.36334 -0.134097 59439.0 2021 8 13 225 0.24956 0.36151 -0.133827 59440.0 2021 8 14 226 0.24916 0.35977 -0.133517 59441.0 2021 8 15 227 0.24874 0.35812 -0.133166 59442.0 2021 8 16 228 0.24837 0.35652 -0.132630 59443.0 2021 8 17 229 0.24814 0.35490 -0.131812 59444.0 2021 8 18 230 0.24803 0.35327 -0.130741 59445.0 2021 8 19 231 0.24793 0.35167 -0.129566 59446.0 2021 8 20 232 0.24775 0.35011 -0.128381 59447.0 2021 8 21 233 0.24751 0.34857 -0.127344 59448.0 2021 8 22 234 0.24720 0.34701 -0.126477 59449.0 2021 8 23 235 0.24685 0.34542 -0.125798 59450.0 2021 8 24 236 0.24650 0.34380 -0.125271 59451.0 2021 8 25 237 0.24615 0.34216 -0.124831 59452.0 2021 8 26 238 0.24582 0.34050 -0.124411 59453.0 2021 8 27 239 0.24550 0.33883 -0.123947 59454.0 2021 8 28 240 0.24521 0.33715 -0.123383 59455.0 2021 8 29 241 0.24495 0.33549 -0.122681 59456.0 2021 8 30 242 0.24472 0.33386 -0.121829