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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:
 60777.0 2025  4 12 102  0.06740  0.39384  0.034541
 60778.0 2025  4 13 103  0.06796  0.39533  0.033979
 60779.0 2025  4 14 104  0.06861  0.39640  0.033563
 60780.0 2025  4 15 105  0.06917  0.39741  0.033328
 60781.0 2025  4 16 106  0.06976  0.39844  0.033282
 60782.0 2025  4 17 107  0.07042  0.39947  0.033449
 60783.0 2025  4 18 108  0.07124  0.40063  0.033719
 60784.0 2025  4 19 109  0.07213  0.40221  0.033994
 60785.0 2025  4 20 110  0.07310  0.40397  0.034259
 60786.0 2025  4 21 111  0.07452  0.40545  0.034430
 60787.0 2025  4 22 112  0.07562  0.40708  0.034416
 60788.0 2025  4 23 113  0.07705  0.40841  0.034122
 60789.0 2025  4 24 114  0.07836  0.40966  0.033528
 60790.0 2025  4 25 115  0.07958  0.41085  0.032682
 60791.0 2025  4 26 116  0.08073  0.41196  0.031726
 60792.0 2025  4 27 117  0.08183  0.41299  0.030860
 60793.0 2025  4 28 118  0.08292  0.41395  0.030251
 60794.0 2025  4 29 119  0.08401  0.41486  0.029989
 60795.0 2025  4 30 120  0.08511  0.41574  0.030068
 60796.0 2025  5  1 121  0.08621  0.41659  0.030384
 60797.0 2025  5  2 122  0.08733  0.41741  0.030798