Results 1 to 10 of about 121 (110)
Remote Sensing, 2020 Over the last 15 years, the Gravity Recovery and Climate Experiment (GRACE) mission has provided measurements of temporal changes in mass redistribution at and within the Earth that affect polar motion. The newest generation of GRACE temporal models, are
Justyna Śliwińska +2 more
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Atmospheric Excitation of Polar Motion
Geo-Spatial Information Science, 2010 The polar motion excited by the fluctuation of global atmospheric angular momentum (AAM) is investigated. Based on the global AAM data, numerical results demonstrate that the fluctuation of AAM can excite the seasonal wobbles (e.g., the 18-month wobble) and the Chandler wobble, which agree well with previous studies.
Wenbin Shen, Wei Chen, Xiaowei Dong
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Validation of GRACE and GRACE-FO Mascon Data for the Study of Polar Motion Excitation
Remote Sensing, 2021 In this study, we calculate the hydrological plus cryospheric excitation of polar motion (hydrological plus cryospheric angular momentum, HAM/CAM) using mascon solutions based on observations from the Gravity Recovery and Climate Experiment (GRACE) and ...
Malgorzata Winska +2 more
exaly +3 more sources
Remote Sensing, 2022 Observations from the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO) missions can be used to estimate gravimetric excitation of polar motion (PM), which reflects the contribution of mass changes in continental hydrosphere ...
Malgorzata Winska +2 more
exaly +3 more sources
Remote Sensing, 2020 The Gravity Recovery and Climate Experiment (GRACE) mission has provided global observations of temporal variations in the gravity field resulting from mass redistribution at the surface and within the Earth for the period 2002–2017.
Malgorzata Winska +2 more
exaly +3 more sources
Hydrological Excitations of Polar Motion, 1993-2002 [PDF]
Geophysical Journal International, 2005 SUMMARY Changes in continental water storage obtained from an advanced land data assimilation system (LDAS) are employed to compute hydrological excitations of polar motion for the 10-yr period of 1993‐2002. The results are compared with observed excitations of polar motion and contributions from the atmosphere and ocean, and with results from previous
Jianli Chen, Clark Wilson
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Excitation of Annual Polar Motion by Atmosphere and Ocean
Chinese Science Bulletin, 2000 The quantitative result of annual polar motion excitation by the ocean is presented for the first time. The atmospheric excitation amounts to more than double of the oceanic excitation. The sum of atmospheric and oceanic excitations approximates more to the observed annual polar motion excitation, compared with atmospheric excitation only.
Dawei Zheng
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A New Method for Deriving Broad-Band Polar Motion Geodetic Excitations
Geodesy and GeodynamicsWhile 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 biases in ...
Jiesi Luo, Jim Ray, Jiancheng Li
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Short periodic variations of polar motion and hemispheric atmospheric angular momentum excitation functions in the period 1984-1992 [PDF]
Annales Geophysicae, 1995 Short periodic oscillations with the periods from 10 up to 110 days of the hemispheric components of effective atmospheric angular momentum (EAAM) excitation function and their correlation with polar motion excitation function have been analyzed.
J. Nastula
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Analyses of zonal atmospheric excitation functions and their correlation with polar motion excitation functions [PDF]
Annales Geophysicae, 1997 The atmospheric influence on the Earth's, rotation can be described by the effective atmospheric angular momentum (EAAM) functions. In this study we focus on the analysis of short period variations of the equatorial components of the zonal EAAM ...
J. Nastula, W. Kosek, B. Kolaczek
doaj +1 more source