Results 1 to 10 of about 31,676 (285)

Robustness of characteristics of the Matuyama-Brunhes geomagnetic field reversal found in global models

Frontiers in Earth Science
Paleomagnetic data enables the global reconstruction of the geomagnetic field, allowing the investigation of significant events like polarity reversals and excursions.
Ahmed Nasser Mahgoub, Monika Körte, Sanja Panovska   +2 more
exaly   +3 more sources

Intensity of the geomagnetic field in Europe for the last 3 ka: Influence of data quality on geomagnetic field modeling

Geochemistry, Geophysics, Geosystems, 2014
One of the main challenges of paleomagnetic research is to obtain high‐resolution geomagnetic field intensity reconstructions. For the last millennia, these reconstructions are mostly based on archeomagnetic data.
F Javier Pavon-Carrasco, M Gómez-Paccard, Gwenael Hervé   +2 more
exaly   +2 more sources

Geomagnetic field shielding over the last one hundred thousand years

Journal of Space Weather and Space Climate, 2022
The geomagnetic field prevents energetic particles, such as galactic cosmic rays, from directly interacting with the Earth’s atmosphere. The geomagnetic field is not static but constantly changing, and over the last 100,000 years, several geomagnetic ...
Gao Jiawei, Korte Monika, Panovska Sanja, Rong Zhaojin, Wei Yong   +4 more
doaj   +1 more source

Domino model for geomagnetic field reversals [PDF]

Physical Review E, 2013
accepted for Physical Review E, 18 December ...
Mori, N., Schmitt, D., Wicht, J., Ferriz-Mas, A., Mouri, H., Nakamichi, A., Morikawa, M.   +6 more
openaire   +4 more sources

Geomagnetic core field models and secular variation forecasts for the 13th International Geomagnetic Reference Field (IGRF-13)

Earth, Planets and Space, 2020
Observations of the geomagnetic field taken at Earth’s surface and at satellite altitude are combined to construct continuous models of the geomagnetic field and its secular variation from 1957 to 2020.
I. Wardinski, D. Saturnino, H. Amit, A. Chambodut, B. Langlais, M. Mandea, E. Thébault   +6 more
doaj   +1 more source

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, A. De Santis, M. Mandea, A. Isac, E. Qamili   +4 more
doaj   +1 more source

Regional geomagnetic core field and secular variation model over the Iberian Peninsula from 2014 to 2020 based on the R-SCHA technique

Earth, Planets and Space, 2023
The Earth’s magnetic field originated in the fluid core, the so-called core field, is the dominant contribution to the geomagnetic field. Since ancient times, the core geomagnetic field has been used primarily for geographical orientation and navigation ...
Marina Puente-Borque, F. Javier Pavón-Carrasco, Alberto Núñez, José Manuel Tordesillas, Saioa A. Campuzano   +4 more
doaj   +1 more source

Error model of geomagnetic-field measurement and extended Kalman-filter based compensation method. [PDF]

PLoS ONE, 2017
The real-time accurate measurement of the geomagnetic-field is the foundation to achieving high-precision geomagnetic navigation. The existing geomagnetic-field measurement models are essentially simplified models that cannot accurately describe the ...
Zhilei Ge, Suyun Liu, Guopeng Li, Yan Huang, Yanni Wang   +4 more
doaj   +1 more source

The development of a regional geomagnetic daily variation model using neural networks [PDF]

Annales Geophysicae, 2000
Global and regional geomagnetic field models give the components of the geomagnetic field as functions of position and epoch; most utilise a polynomial or Fourier series to map the input variables to the geomagnetic field values.
P. R. Sutcliffe
doaj   +1 more source

Can Core Flows inferred from Geomagnetic Field Models explain the Earth's Dynamo? [PDF]

, 2015
We test the ability of large scale velocity fields inferred from geomagnetic secular variation data to produce the global magnetic field of the Earth.Our kinematic dynamo calculations use quasi-geostrophic (QG) flows inverted from geomagnetic field ...
Pais, Maria Alexandra, Schaeffer, Nathanaël, Silva, Estelina Lora   +2 more
core   +11 more sources