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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