Results 21 to 30 of about 745 (152)
Midday reversal of equatorial ionospheric electric field [PDF]
Annales Geophysicae, 1997 A comparative study of the geomagnetic and ionospheric data at equatorial and low-latitude stations in India over the 20 year period 1956–1975 is described.
R. G. Rastogi
doaj +1 more source
Indonesian Journal on Geoscience, 2014 DOI: 10.17014/ijog.v5i2.99Palaeomagnetism has a role to make a new stratigraphic nomenclature based on the earth magnetism of a nonperiodic reversal polarity phenomenon. Since this phenomenon has a global impact, it can be used as a potential correlation,
Edi Sunardi
doaj +1 more source
Journal of Space Weather and Space Climate, 2020 The vertical component of the plasma drift, especially the evening-time pre-reversal drift, constitutes an important aspect of the nighttime electrodynamics of the equatorial ionosphere.
Sousasantos Jonas +5 more
doaj +1 more source
A >70‐Myr‐Long Geomagnetic Field Reversal Hyperactivity Across the Ediacaran‐Cambrian Transition
Geophysical Research LettersThe long‐term variation of the geomagnetic field is a key constraint for unraveling the geodynamo processes and the evolution of Earth's deep interior.
Fuyun Shen +6 more
doaj +1 more source
A Study of Stochastic Resonance in the Periodically Forced Rikitake Dynamo
Terrestrial, Atmospheric and Oceanic Sciences, 2007 The geodynamo has widely been thought to be an intuitive and selfsustained model of the Earth¡¦s magnetic field. In this paper, we elucidate how a periodic signal could be embedded in the geomagnetic filed via the mechanism of stochastic resonance in a ...
Chien-Chih Chen Chih-Yuan Tseng
doaj +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.Improved satellite‐derived gravity data support updated interpretations and models of ancient plate boundaries and plate motions affecting Zealandia and West Antarctica. The models combine to confidently resolve hundreds of kilometres of Late Cretaceous–Eocene motion between the Pacific and Lord Howe plates, confirming that plate circuit constructions ...
Graeme Eagles
wiley +1 more source
Evidence of prompt penetration electric fields during HILDCAA events [PDF]
Annales Geophysicae, 2017 High-intensity, long-duration continuous auroral electrojet (AE) activity (HILDCAA) events may occur during a long-lasting recovery phase of a geomagnetic storm.
R. P. Silva +3 more
doaj +1 more source
Position of the Lhasa Terrane and Two‐Stage Crustal Shortening During the India–Asia Collision
Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.Abstract The paleolatitudinal change of the Lhasa Terrane is critical for estimating the timing of the India–Asia collision and associated syn‐to post‐collisional crustal shortening, but its paleoposition is highly debated. Here we present integrated geochronologic and paleomagnetic results from the Lower Eocene Nianbo Formation in the Linzhou Basin ...
Zhenhua Jia +6 more
wiley +1 more source
Shannon information of the geomagnetic field for the past 7000 years [PDF]
Nonlinear Processes in Geophysics, 2010 The present behaviour of the geomagnetic field as expressed by the International Geomagnetic Reference Field (IGRF) deserves special attention when compared with that shown over the past few thousands of years by two paleomagnetic/archeomagnetic models ...
A. De Santis, E. Qamili
doaj
Progress in Earth and Planetary Science, 2020 Terrestrial records of the last geomagnetic reversal often have few age constraints. Chronostratigraphy using suborbital-scale paleoceanic events during marine isotope stage 19 may contribute to solving this problem. We applied the method to an 8 m long,
Masayuki Hyodo +8 more
doaj +1 more source