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