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:
61107.0 2026 3 8 67 0.10405 0.39309 0.063104 61108.0 2026 3 9 68 0.10322 0.39342 0.062921 61109.0 2026 3 10 69 0.10297 0.39384 0.062812 61110.0 2026 3 11 70 0.10310 0.39433 0.062688 61111.0 2026 3 12 71 0.10303 0.39487 0.062643 61112.0 2026 3 13 72 0.10282 0.39542 0.062658 61113.0 2026 3 14 73 0.10283 0.39606 0.062545 61114.0 2026 3 15 74 0.10325 0.39683 0.062182 61115.0 2026 3 16 75 0.10403 0.39768 0.061637 61116.0 2026 3 17 76 0.10475 0.39870 0.060863 61117.0 2026 3 18 77 0.10541 0.39964 0.059825 61118.0 2026 3 19 78 0.10582 0.40053 0.058616 61119.0 2026 3 20 79 0.10615 0.40133 0.057383 61120.0 2026 3 21 80 0.10646 0.40205 0.056288 61121.0 2026 3 22 81 0.10680 0.40273 0.055453 61122.0 2026 3 23 82 0.10722 0.40336 0.054916 61123.0 2026 3 24 83 0.10769 0.40399 0.054641 61124.0 2026 3 25 84 0.10820 0.40464 0.054541 61125.0 2026 3 26 85 0.10876 0.40528 0.054490 61126.0 2026 3 27 86 0.10935 0.40592 0.054356 61127.0 2026 3 28 87 0.10996 0.40654 0.054014