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:
61190.0 2026 5 30 150 0.18112 0.40864 0.018061 61191.0 2026 5 31 151 0.18150 0.40808 0.017813 61192.0 2026 6 1 152 0.18209 0.40774 0.017758 61193.0 2026 6 2 153 0.18320 0.40782 0.017804 61194.0 2026 6 3 154 0.18449 0.40815 0.017808 61195.0 2026 6 4 155 0.18539 0.40833 0.017742 61196.0 2026 6 5 156 0.18596 0.40830 0.017532 61197.0 2026 6 6 157 0.18649 0.40806 0.017042 61198.0 2026 6 7 158 0.18688 0.40762 0.016410 61199.0 2026 6 8 159 0.18707 0.40705 0.015621 61200.0 2026 6 9 160 0.18743 0.40641 0.014686 61201.0 2026 6 10 161 0.18787 0.40590 0.013697 61202.0 2026 6 11 162 0.18842 0.40540 0.012797 61203.0 2026 6 12 163 0.18900 0.40491 0.012106 61204.0 2026 6 13 164 0.18962 0.40445 0.011713 61205.0 2026 6 14 165 0.19028 0.40400 0.011634 61206.0 2026 6 15 166 0.19094 0.40353 0.011792 61207.0 2026 6 16 167 0.19158 0.40306 0.012030 61208.0 2026 6 17 168 0.19220 0.40258 0.012181 61209.0 2026 6 18 169 0.19281 0.40208 0.012109 61210.0 2026 6 19 170 0.19340 0.40154 0.011766