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:
60655.0 2024 12 11 346 0.17755 0.31513 0.048931 60656.0 2024 12 12 347 0.17658 0.31451 0.048361 60657.0 2024 12 13 348 0.17538 0.31397 0.048037 60658.0 2024 12 14 349 0.17389 0.31322 0.047945 60659.0 2024 12 15 350 0.17221 0.31225 0.048097 60660.0 2024 12 16 351 0.17042 0.31140 0.048373 60661.0 2024 12 17 352 0.16860 0.31074 0.048654 60662.0 2024 12 18 353 0.16699 0.31018 0.048830 60663.0 2024 12 19 354 0.16585 0.30971 0.048859 60664.0 2024 12 20 355 0.16487 0.30978 0.048684 60665.0 2024 12 21 356 0.16373 0.30964 0.048313 60666.0 2024 12 22 357 0.16250 0.30984 0.047771 60667.0 2024 12 23 358 0.16122 0.30997 0.047188 60668.0 2024 12 24 359 0.15990 0.30999 0.046665 60669.0 2024 12 25 360 0.15860 0.30991 0.046268 60670.0 2024 12 26 361 0.15735 0.30979 0.046013 60671.0 2024 12 27 362 0.15614 0.30965 0.045911 60672.0 2024 12 28 363 0.15496 0.30950 0.045982 60673.0 2024 12 29 364 0.15380 0.30938 0.046217 60674.0 2024 12 30 365 0.15264 0.30927 0.046574 60675.0 2024 12 31 366 0.15149 0.30917 0.046932