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:
60687.0 2025 1 12 12 0.12894 0.30466 0.043015 60688.0 2025 1 13 13 0.12687 0.30404 0.043479 60689.0 2025 1 14 14 0.12456 0.30331 0.043966 60690.0 2025 1 15 15 0.12278 0.30277 0.044348 60691.0 2025 1 16 16 0.12169 0.30252 0.044548 60692.0 2025 1 17 17 0.12074 0.30246 0.044570 60693.0 2025 1 18 18 0.12004 0.30236 0.044487 60694.0 2025 1 19 19 0.12008 0.30257 0.044347 60695.0 2025 1 20 20 0.12064 0.30313 0.044178 60696.0 2025 1 21 21 0.12109 0.30370 0.044075 60697.0 2025 1 22 22 0.12116 0.30452 0.044072 60698.0 2025 1 23 23 0.12094 0.30517 0.044247 60699.0 2025 1 24 24 0.12043 0.30580 0.044639 60700.0 2025 1 25 25 0.11971 0.30637 0.045222 60701.0 2025 1 26 26 0.11886 0.30686 0.045911 60702.0 2025 1 27 27 0.11796 0.30731 0.046617 60703.0 2025 1 28 28 0.11701 0.30773 0.047258 60704.0 2025 1 29 29 0.11607 0.30815 0.047728 60705.0 2025 1 30 30 0.11511 0.30858 0.047923 60706.0 2025 1 31 31 0.11416 0.30904 0.047806 60707.0 2025 2 1 32 0.11321 0.30952 0.047416