Results 91 to 100 of about 5,592 (185)
Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.Abstract The Laschamps geomagnetic excursion (≈41,000 years BP) was a period of significant weakening and incomplete reversal of the Earth's magnetic field. The weakening substantially reduced geomagnetic shielding against cosmic rays (CRs), which contribute to phenomena at Earth, such as cosmogenic isotope production, and atmospheric ionisation and ...
N. Larsen +4 more
wiley +1 more source
Reconstructing Magnetotail Reconnection Events Using Data Mining is Feasible and Repeatable
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.Abstract Recently, Stephens et al. (2023), https://doi.org/10.1029/2022ja031066 utilized a data mining (DM) algorithm, applied to 26 years of magnetospheric magnetometer observations coupled with a flexible formulation of the magnetospheric magnetic field, to reconstruct the global configuration of the magnetotail when the Magnetospheric MultiScale ...
G. K. Stephens +3 more
wiley +1 more source
Evidence from Strandings for Geomagnetic Sensitivity in Cetaceans [PDF]
, 1986 We tested the hypothesis that cetaceans use weak anomalies in the geomagnetic field as cues for orientation, navigation and/or piloting. Using the positions of 212 stranding events of live animals in the Smith sonian compilation which fall within the ...
Dizon, Andrew E. +2 more
core
Real-time Magnetometer Disturbance Estimation via Online Nonlinear Programming
, 2019 Magnetometer is a significant sensor for integrated navigation. However, it suffers from many kinds of unknown dynamic magnetic disturbances. We study the problem of online estimating such disturbances via a nonlinear optimization aided by intermediate ...
Wu, Jin
core +1 more source
The MANA Magnetometer Array, and Magnetic Observations Across New Zealand From 2024
Space Weather, Volume 24, Issue 2, February 2026.Abstract This paper describes the Magnetometer Array for New Zealand Aotearoa, or MANA, completed in 2023. The network consists of five new variometer sites to complement the existing Eyrewell geomagnetic observatory. Here, we describe the technical details and capabilities of the network, including the hardware and software used. Data products include
John Malone‐Leigh +8 more
wiley +1 more source
Candidate geomagnetic field models for IGRF-14 and secular acceleration since 2020
Earth, Planets and SpaceIGRF-14 is the fourteenth generation of the International Geomagnetic Reference Field (IGRF), a spherical harmonic model of Earth’s main magnetic field and its secular variation, developed through international collaboration under the auspices of the ...
Arnaud Chulliat, Manoj Nair, Sam Califf
doaj +1 more source
The use of geomagnetic field models in magnetic surveys [PDF]
The importance of global geomagnetic field models for the reduction of magnetic surveys is discussed. It is demonstrated that a numerical model with adequate secular variation correction, provides a suitable representation of the regional field.
Gain, J. C., Regan, R. D.
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In retrospect: Swarm, IGRF and other models, simple forecast assessments
, 2023 The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Rother, Martin, Korte, Monika
openaire +2 more sources
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
Definitive IGRF models for 1945, 1950, 1955, and 1960.
Journal of geomagnetism and geoelectricity, 1988 Definitive internal geomagnetic field models are obtained for the epochs 1945, 1950, 1955, and 1960, with the solution including local biases for the fixed observatories. In order to derive a priori models for the epochs, the International Geomagnetic Reference Field (12/83) model (based on Magsat data) was projected backward in time using a spline fit
R. A. LANGEL +5 more
openaire +2 more sources