Results 1 to 10 of about 737 (157)
Intradecadal variations in length of day and their correspondence with geomagnetic jerks [PDF]
Nature Communications, 2020 Earth rotation variation reflects the physics, dynamics and the magnetic field changes of Earth’s interior. The authors find a significant ~8.6 year periodic increasing oscillation in length of day and its good link to geomagnetic jerks related to Earth ...
Pengshuo Duan, Chengli Huang
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Geomagnetic jerks characterization via spectral analysis [PDF]
Solid Earth, 2012 In this study we have applied spectral techniques to analyze geomagnetic field time-series provided by observatories, and compared the results with those obtained from analogous analyses of synthetic data estimated from models. Then, an algorithm is here
B. Duka +4 more
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Towards Understanding the Interconnection between Celestial Pole Motion and Earth’s Magnetic Field Using Space Geodetic Techniques [PDF]
Sensors, 2021 The understanding of forced temporal variations in celestial pole motion (CPM) could bring us significantly closer to meeting the accuracy goals pursued by the Global Geodetic Observing System (GGOS) of the International Association of Geodesy (IAG), i.e.
Sadegh Modiri +7 more
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Frontiers in Earth Science, 2021 Geomagnetic jerks are sudden changes in the geomagnetic field secular variation related to changes in outer core flow patterns. Finding geophysical phenomena related to geomagnetic jerks provides a vital contribution to better understand the geomagnetic ...
Saioa A Campuzano +2 more
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Analysis of geomagnetic observatory data and detection of geomagnetic jerks with the MOSFiT software package [PDF]
Geoscientific Instrumentation, Methods and Data Systems, 2023 MOSFiT (Magnetic Observatories and Stations Filtering Tool) is a Python package to visualize and filter data from magnetic observatories and magnetometer stations.
M. V. da Silva +4 more
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Dynamics of temporal changes of geomagnetic field secular variations [PDF]
Геофизический журнал, 2016 Time changes of the geomagnetic field secular variations, cleaned by three and eleven years running means were studying. The years of the changes of sign secular variations and years of the changes of their velocity were found.
Yu.P. Sumaruk, T.P. Sumaruk
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Recent changes of the Earth's core derived from satellite observations of magnetic and gravity fields. [PDF]
Proc Natl Acad Sci U S A, 2012 International audienceTo understand the dynamics of the Earth's fluid, iron-rich outer core, only indirect observations are available. The Earth's magnetic field, originating mainly within the core, and its temporal variations can be used to infer the ...
Mandea M +5 more
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IGRF-14 secular variation prediction from core surface flow acceleration [PDF]
Earth, Planets and SpaceThe International Geomagnetic Reference Field (IGRF) has been regularly updated since its inception in 1965. Every recent iteration contains an estimate of the geomagnetic secular variation (SV), for the intermediate years between iterations. We submit a
Frederik Dahl Madsen +5 more
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Geodesy and Geodynamics, 2022 The period and quality factor of the Chandler wobble (CW) are useful for constraining the Earth's internal structure properties, such as the mantle elasticity.
Yachong An, Hao Ding
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Contributions to Geophysics and Geodesy, 2022 Versus the theory of fully stochastically mechanism of geomagnetic jerks based on the buoyant force driven Quasi-Geostrophic (QG) dynamo, the torsional waves in realistic condition of the Earth's core evolve in the intradecadal time scales.
Mohsen LUTEPHY +2 more
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