Results 31 to 40 of about 13,255 (163)
Anomalous changes of vertical geomagnetic field in Kamchatka
E3S Web of Conferences, 2016 Secular variations of the vertical geomagnetic field at Paratunka (Kamchatka), Kakioka (Honshu), Mamambetsu (Hokkaido) and Patrony (Irkutsk) are considered from 1968 to 2014.
Moroz Yuriy +2 more
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Physics-based secular variation candidate models for the IGRF
Earth, Planets and Space, 2021 Each International Geomagnetic Reference Field (IGRF) model released under the auspices of the International Association of Geomagnetism and Aeronomy comprises a secular variation component that describes the evolution of the main magnetic field ...
Alexandre Fournier +3 more
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Annals of Geophysics, 2003 The updated version of the ITalian Geomagnetic Reference Field (ITGRF) for 2000.0 and its secular variation model up to 2005.0 are presented in this paper.
J. M. Torta +5 more
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Observed Auroral Ovals Secular Variation Inferred from Auroral Boundary Data
Geosciences, 2021 We analyze the auroral boundary corrected geomagnetic latitude provided by the Auroral Boundary Index (ABI) database to estimate long-term changes of core origin in the area enclosed by this boundary during 1983–2016.
Bruno Zossi +3 more
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Short-term prediction of geomagnetic secular variation with an echo state network
Earth, Planets and SpaceA technique for predicting the secular variation (SV) of the geomagnetic field based on the echo state network (ESN) model is proposed. SV is controlled by the geodynamo process in the Earth’s outer core, and modeling its nonlinear behaviors can be ...
Shin’ya Nakano, Sho Sato, Hiroaki Toh
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A New View of Long-Term Geomagnetic Field Secular Variation
Frontiers in Earth Science, 2018 This study carries out a statistical analysis of high-resolution PSV records for the last ~70 ka from three different regions of the Earth. We consider directional and intensity variability in each region on time scales of 103-105 years in order to ...
Steve P. Lund
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Geophysical Research Letters, 2022 Unique information about the dynamo process acting at Jupiter can be inferred by modeling and interpreting its magnetic field. Using the fluxgate magnetometer measurements acquired during the 4 years of the Juno mission, we derive a magnetic field model ...
S. Sharan +5 more
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Review of secular variation studies in the South Atlantic Anomaly
地球与行星物理论评The South Atlantic Anomaly (SAA) is one of the most remarkable structural features of the Earth's magnetic field. The region is characterized by weak magnetic field intensity.
Yaochen Yue +5 more
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Excursions, Reversals, and Secular Variation: Different Expressions of a Common Mechanism?
Geochemistry, Geophysics, GeosystemsFluctuations in the geomagnetic field occur over a broad range of timescales. Short‐period fluctuations are called secular variation, whereas excursions and reversals are viewed as anomalous transient events.
B. A. Buffett
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Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina [PDF]
Geofísica Internacional, 2003 Every five years a new International Geomagnetic Reference Field (IGRF) model is released and the secular variation for the previous period is updated, producing the definitive DGRF model.
Marta E. Ghidella +2 more
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