Geomagnetic field declination: from decadal to centennial scales [PDF]
Solid Earth, 2018 Declination annual mean time series longer than 1 century provided by 24 geomagnetic observatories worldwide, together with 5 Western European reconstructed declination series over the last 4 centuries, have been analyzed in terms of the frequency ...
V. Dobrica, C. Demetrescu, M. Mandea
doaj +1 more source
Measuring chandler wobble amplitude variations using IERS EOP C04 data [PDF]
Serbian Astronomical Journal, 2023 We analyzed the Earth's long-term polar motion using the time series IERS EOP C04 (International Earth Rotation and Reference Systems Service - IERS; Earth Orientation Parameters - EOP; Combination of four (04) techniques - C04), from 1984 to ...
Damljanović G., Vasilić V.
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Free core nutation: new large disturbance and connection evidence with geomagnetic jerks [PDF]
, 2015 Variations in free core nutation (FCN) are connected with various processes in the Earth's fluid core and core-mantle coupling, which are also largely responsible for the geomagnetic field variations, particularly the geomagnetic jerks (GMJs). A previous
Malkin, Zinovy
core +2 more sources
Regional character of geomagnetic field directional circularity: Holocene Eastern North America
Frontiers in Earth Science, 2023 This study characterizes the paleomagnetic secular variation (PSV) in five Holocene records from Eastern North America. We have determined equi-spaced (100-year) declination and inclination time series for the five sites and compared their directional ...
Steven P. Lund
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Detection of Phase Jumps of Free Core Nutation of the Earth and their Concurrence with Geomagnetic Jerks [PDF]
, 2004 We detected phase jumps of the Free Core Nutation (FCN) of the Earth directly from the analysis of the Very Long Baseline Interferometer (VLBI) observation of the Earth rotation for the period 1984-2003 by applying the Weighted Wavelet Z-Transform (WWZ ...
A Toomre +20 more
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Can core-surface flow models be used to improve the forecast of the Earth's main magnetic field? [PDF]
, 2008 [1] Geomagnetic main field models used for navigation are updated every 5 years and contain a forecast of the geomagnetic secular variation for the upcoming epoch. Forecasting secular variation is a difficult task.
Alexandrescu +46 more
core +5 more sources
Signs of a new geomagnetic jerk between 2019 and 2020 from Swarm and observatory data
Earth, Planets and Space, 2021 Highlights Observatory and Swarm data reveal a new geomagnetic jerk around 2019–2020. A very recent geomagnetic field model indicates the global character of the new jerk. A new pulse at the CMB around mid-2018 seems to be the starting point of this jerk.
F. Javier Pavón-Carrasco +3 more
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Temporal Variations of Strength and Location of the South Atlantic Anomaly as Measured by RXTE [PDF]
, 2009 The evolution of the particle background at an altitude of ~540 km during the time interval between 1996 and 2007 is studied using the particle monitor of the High Energy X-ray Timing Experiment on board NASA's Rossi X-ray Timing Explorer.
Fürst, Felix +5 more
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Earth orientation and its excitations by atmosphere, oceans, and geomagnetic jerks [PDF]
Serbian Astronomical Journal, 2015 In addition to torques exerted by the Moon, Sun, and planets, changes of the Earth orientation parameters (EOP) are known to be caused also by excitations by the atmosphere and oceans.
Vondrák J., Ron C.
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Worldwide wavelet analysis of geomagnetic jerks [PDF]
Journal of Geophysical Research: Solid Earth, 1996 Following an earlier study which gives the principles of the method and an example of application to the eastern component of the magnetic field in the European region [Alexandrescu et al., 1995], detection and characterization of geomagnetic jerks using wavelet analysis is generalized to any horizontal component of the field and to a worldwide ...
Alexandrescu, Mioara +4 more
openaire +2 more sources