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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:
 59375.0 2021  6 10 161  0.17303  0.43610 -0.181909
 59376.0 2021  6 11 162  0.17427  0.43573 -0.181103
 59377.0 2021  6 12 163  0.17542  0.43539 -0.180179
 59378.0 2021  6 13 164  0.17650  0.43508 -0.179261
 59379.0 2021  6 14 165  0.17752  0.43481 -0.178352
 59380.0 2021  6 15 166  0.17841  0.43448 -0.177560
 59381.0 2021  6 16 167  0.17918  0.43393 -0.176965
 59382.0 2021  6 17 168  0.18013  0.43308 -0.176515
 59383.0 2021  6 18 169  0.18161  0.43208 -0.176260
 59384.0 2021  6 19 170  0.18342  0.43127 -0.176199
 59385.0 2021  6 20 171  0.18523  0.43073 -0.176225
 59386.0 2021  6 21 172  0.18696  0.43027 -0.176220
 59387.0 2021  6 22 173  0.18863  0.42982 -0.176004
 59388.0 2021  6 23 174  0.19016  0.42930 -0.175484
 59389.0 2021  6 24 175  0.19158  0.42872 -0.174654
 59390.0 2021  6 25 176  0.19299  0.42803 -0.173587
 59391.0 2021  6 26 177  0.19444  0.42725 -0.172408
 59392.0 2021  6 27 178  0.19590  0.42644 -0.171242
 59393.0 2021  6 28 179  0.19733  0.42563 -0.170187
 59394.0 2021  6 29 180  0.19873  0.42479 -0.169280
 59395.0 2021  6 30 181  0.20009  0.42389 -0.168526