Results 1 to 10 of about 694 (126)
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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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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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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MECHANISM OF GEOMAGNETIC JERKS [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2017 Mechanism of geomagnetic jerks evident from the model of the hot Earth magnetic field is discussed here. Similar in their principle, reversals, excursions and jerks result from auto adjusting of temperature of the phase change (PC) “evaporation ...
V.V. Kuznetsov
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Local time features of geomagnetic jerks [PDF]
Earth, Planets and Space, 2002 The geomagnetic jerk amplitudes, which are defined as abruptness of changes in the trends of geomagnetic time series, are investigated with geomagnetic monthly means computed from hourly mean values at each local time. A statistical time series model in which the trend component is expressed by a second order spline function with variable knots is ...
Nagao, Hiromichi +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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Geomagnetic jerks and seismic activity
Annals of Geophysics, 1996 By means of a Monte Carlo simulation, we explored the extent to which large earthquakes may induce fluctuations on the secular variation of the Earth's magnetic field.
W. Marzocchi +4 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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Core Surface Flow Changes Associated With the 2017 Pacific Geomagnetic Jerk. [PDF]
Geophys Res Lett, 2022 AbstractA geomagnetic jerk was seen in Swarm satellite data in 2017 over the Pacific region. We invert time series of spatial gradient secular variation data between 2014 and 2020, reduced to a grid of points at satellite altitude, for spatially‐ and temporally‐regularized core surface flow.
Whaler KA +3 more
europepmc +6 more sources
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
europepmc +7 more sources