Results 111 to 120 of about 1,592 (224)

Anomalous Secular Variation of Geomagnetic Total Intensity In Chugoku District, Japan [PDF]

open access: yes, 1972
In 1971 Geomagnetic surveys in the Chugoku district have been carried out by using a portable proton precession magnetometer. The ordinary method of epoch reduction to eliminate non-local changes in the geomagnetic field has been slightly modified by ...
SUMITOMO, Norihiko
core  

Detecting geomagnetic field nonlinearities by bispectral analysis and a phase coupling nonlinear technique

open access: yesAnnals of Geophysics, 2002
The Earth's magnetic field varies over a wide range of characteristic times, say, from years to centuries, and more. In order to detect some nonlinear features of the geomagnetic field evolution we first apply a nonlinear spectral technique, i.e ...
A. De Santis, R. Tozzi
doaj   +1 more source

Magnetotail Source of Premidnight Upward Field‐Aligned Currents: Nature of the Substorm Current System

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract The substorm current wedge constitutes the backbone of the substorm current system. Its field‐aligned current components include an upward current in the premidnight sector and a downward current in the midnight‐morning sector, which connect the auroral ionosphere to the magnetotail.
Tsugunobu Nagai, Iku Shinohara
wiley   +1 more source

Space Weather Disrupts Low‐Latitude Network RTK: Evidence From LSTIDs During June 2025 Geomagnetic Storm

open access: yesSpace Weather, Volume 24, Issue 6, June 2026.
Abstract The geomagnetic storm on 1 June 2025 generated pronounced large‐scale traveling ionospheric disturbances (LSTIDs) over China, captured by dense GNSS networks. It has been unclear whether network real‐time kinematic (NRTK) positioning, which relies on spatial interpolation from multiple reference stations, remains effective under such extreme ...
Tong Liu   +8 more
wiley   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

open access: yesArchaeometry, Volume 68, Issue 3, Page 317-329, June 2026.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río   +6 more
wiley   +1 more source

Report on the magnetic survey in Slovakia for the 2014.5 epoch

open access: yesContributions to Geophysics and Geodesy, 2016
The models of the distribution of the elements of the geomagnetic field must be updated regularly. For this purpose geomagnetic measurements have to be carried out repeatedly at geomagnetic observatories as well as at temporary observation points.
Fridrich VALACH   +3 more
doaj   +1 more source

Simple additional constraints on regional models of the geomagnetic secular variation field

open access: yes, 1996
Lecter section of Physics of the Earth and Planetary Interiors 97 (1996)Standard ways of building regional models of the geomagnetic field fail when one wishes to model secular variation (SV).
Torta, J. M., De Santis, A., Falcone, C.
core  

How does Chinese loess become magnetized?

open access: yes, 2010
EThOS - Electronic Theses Online ServiceGBUnited ...
Zhao, Xiang
core  

Bottom-up control of geomagnetic secular variation by the Earth's inner core

open access: yes, 2013
Temporal changes in the Earth’s magnetic field, known as geomagnetic secular variation, occur most prominently at low latitudes in the Atlantic hemisphere1, 2 (that is, from −90 degrees east to 90 degrees east), whereas in the Pacific hemisphere there is
Finlay, Chris   +6 more
core   +1 more source

A 4500 year record of palaeomagnetic secular variation and relative palaeointensity from the tyrrhenian sea

open access: yes, 2020
A marine sediment core from the western Mediterranean provides a new high-resolution 4500 year record of palaeomagnetic secular variation and relative palaeointensity.
Florindo F.   +13 more
core   +1 more source

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