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:
61141.0 2026 4 11 101 0.14118 0.41385 0.047293 61142.0 2026 4 12 102 0.14236 0.41419 0.046832 61143.0 2026 4 13 103 0.14330 0.41444 0.046127 61144.0 2026 4 14 104 0.14425 0.41463 0.045220 61145.0 2026 4 15 105 0.14516 0.41493 0.044090 61146.0 2026 4 16 106 0.14586 0.41519 0.042844 61147.0 2026 4 17 107 0.14667 0.41530 0.041599 61148.0 2026 4 18 108 0.14757 0.41540 0.040542 61149.0 2026 4 19 109 0.14839 0.41568 0.039787 61150.0 2026 4 20 110 0.14923 0.41606 0.039181 61151.0 2026 4 21 111 0.15002 0.41633 0.038838 61152.0 2026 4 22 112 0.15094 0.41660 0.038723 61153.0 2026 4 23 113 0.15183 0.41678 0.038595 61154.0 2026 4 24 114 0.15272 0.41689 0.038335 61155.0 2026 4 25 115 0.15363 0.41693 0.037880 61156.0 2026 4 26 116 0.15452 0.41694 0.037225 61157.0 2026 4 27 117 0.15542 0.41694 0.036427 61158.0 2026 4 28 118 0.15631 0.41694 0.035571 61159.0 2026 4 29 119 0.15721 0.41691 0.034746 61160.0 2026 4 30 120 0.15811 0.41687 0.034038 61161.0 2026 5 1 121 0.15900 0.41682 0.033507