Zobrazeno 1 - 10
of 343
pro vyhledávání: '"Jim Ray"'
Publikováno v:
Geodesy and Geodynamics, Vol 15, Iss 5, Pp 453-464 (2024)
While the geodetic excitation χ(t) of polar motion p(t) is essential to improve our understanding of global mass redistributions and relative motions with respect to the terrestrial frame, the widely adopted method to derive χ(t) from p(t) has bias
Externí odkaz:
https://doaj.org/article/00c39bf6b84b4c098bee686f3f495630
Publikováno v:
Geodesy and Geodynamics, Vol 11, Iss 1, Pp 64-71 (2020)
Geophysical excitations of length-of-day (LOD) variations is of great significance in understanding changes in the Earth's spin rate and interactions between geophysical fluids and the solid Earth, as well as validating the reliability of atmospheric
Externí odkaz:
https://doaj.org/article/1b388679e9724403835b82f47fc50b9b
Publikováno v:
Earth and Space Science, Vol 8, Iss 12, Pp n/a-n/a (2021)
Abstract The El Niño–Southern Oscillation (ENSO) event has a long incubation process, during which the interannual variation of length‐of‐day (LOD) and the atmospheric angular momentum (AAM) series will be quickly affected due to the interacti
Externí odkaz:
https://doaj.org/article/29d45574fa684367b1a11e6050f4744e
Publikováno v:
Remote Sensing, Vol 14, Iss 15, p 3567 (2022)
Due to the conservation of global angular momentum, polar motion (PM) is dominated by global mass redistributions and relative motions in the atmosphere, oceans and land water at seasonal time scales. Thus, accurately measured PM data can be used to
Externí odkaz:
https://doaj.org/article/dccf342e1dc741f7bb78d9f22c648d7c
Publikováno v:
Earth and Space Science, Vol 8, Iss 3, Pp n/a-n/a (2021)
Abstract Like the seasonal and interannual variations in length‐of‐day (LOD), variations on intraseasonal timescales (periods shorter than 183 days) are also predominantly caused by changes in the angular momentum of the zonal winds. But the smal
Externí odkaz:
https://doaj.org/article/dde93d087c3c4585a73d1a91c8fdc211
Publikováno v:
Earth and Space Science, Vol 7, Iss 2, Pp n/a-n/a (2020)
Abstract At timescales shorter than about 2~yr, non‐tidal length‐of‐day (LOD) variations are mainly excited by angular momentum exchanges between the atmospheric, oceanic and continental hydrological fluid envelopes and the underlying solid Ear
Externí odkaz:
https://doaj.org/article/b0dedafec1dc477c85d10e04e1130572
Publikováno v:
Remote Sensing, Vol 13, Iss 21, p 4408 (2021)
Time-dependent loading deformations of the Earth’s surface, due to nontidal changes in the atmosphere, ocean, land water/ice, etc., contribute significantly to the seasonal and secular Global Positioning System (GPS) site displacements, especially
Externí odkaz:
https://doaj.org/article/df02e1bf15824758ba9c163a144998ab
Publikováno v:
Geodesy and Geodynamics, Vol 8, Iss 6, Pp 377-388 (2017)
At seasonal and intraseasonal time scales, polar motions are mainly excited by angular momentum fluctuations due to mass redistributions and relative motions in the atmosphere, oceans, and continental water, snow, and ice, which are usually provided
Externí odkaz:
https://doaj.org/article/3dce729d1eee46debb1ff3477a883559
Publikováno v:
Geodesy and Geodynamics, Vol 8, Iss 6, Pp 413-420 (2017)
We elaborate an error budget for the long-term accuracy of IGS (International Global Navigation Satellite System Service) polar motion estimates, concluding that it is probably about 25–30 μas (1-sigma) overall, although it is not possible to quan
Externí odkaz:
https://doaj.org/article/551bc25097ff42609eefddf69378f069
Publikováno v:
Remote Sensing, Vol 12, Iss 7, p 1209 (2020)
In addition to studies of sea level change and mantle rheology, reliable Glacial Isostatic Adjustment (GIA) models are necessary as a background model to correct the widely used Gravity Recovery and Climate Experiment (GRACE) monthly gravity solution
Externí odkaz:
https://doaj.org/article/c2b3a97f3bbd45f695b160f3749155be