Results 11 to 20 of about 5,592 (185)

Physics-based secular variation candidate models for the IGRF [PDF]

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, Julien Aubert, Vincent Lesur, Erwan Thébault   +3 more
doaj   +2 more sources

GCRAS candidate field models for IGRF-14

Earth, Planets and Space
We present candidate models for the 14th generation of the International Geomagnetic Reference Field (IGRF-14), specifically the Definitive Geomagnetic Reference Field (DGRF) for epoch 2020.0 and the IGRF for epoch 2025.0.
Ilya Firsov, Dmitry Kudin, Anatoly Soloviev, Roman Krasnoperov, Mikhail Dobrovolsky   +4 more
doaj   +2 more sources

The Kalmag model as a candidate for IGRF-13 [PDF]

Earth, Planets and Space, 2020
We present a new model of the geomagnetic field spanning the last 20 years and called Kalmag. Deriving from the assimilation of CHAMP and Swarm vector field measurements, it separates the different contributions to the observable field through ...
Julien Baerenzung, Matthias Holschneider, Johannes Wicht, Vincent Lesur, Sabrina Sanchez   +4 more
doaj   +9 more sources

Secular variations of geomagnetic declination in the Karadag point and the global helio-geodynamic processes [PDF]

Геофизический журнал, 2019
To study the changes in the local variations of geomagnetic field, the Karadag point was chosen due to the fact that we found previously on increased insolation and the surface temperature of the earth at this point over the last century (compared to ...
A. E. Volvach, G. S. Kurbasova
doaj   +8 more sources

IGRF candidates for 1980 and 1985 [PDF]

Physics of the Earth and Planetary Interiors, 1987
Abstract A tenth degree and order spherical harmonic model of the main geomagnetic field for 1980 has been derived using MAGSAT data supplemented by aeromagnetic vector data collected by the Project MAGNET aircraft. A secular variation model of degree and order 8 for 1982.5 based on magnetic observatory and repeat station measurements has also been ...
J.M. Quinn, D.J. Kerridge, D.R. Barraclough   +2 more
  +8 more sources

The CSES global geomagnetic field model (CGGM): an IGRF-type global geomagnetic field model based on data from the China Seismo-Electromagnetic Satellite

Earth, Planets and Space, 2021
Using magnetic field data from the China Seismo-Electromagnetic Satellite (CSES) mission, we derive a global geomagnetic field model, which we call the CSES Global Geomagnetic Field Model (CGGM).
Yanyan Yang, Gauthier Hulot, Pierre Vigneron, Xuhui Shen, Zeren Zhima, Bin Zhou, Werner Magnes, Nils Olsen, Lars Tøffner-Clausen, Jianpin Huang, Xuemin Zhang, Shigeng Yuan, Lanwei Wang, Bingjun Cheng, Andreas Pollinger, Roland Lammegger, Jianpin Dai, Jun Lin, Feng Guo, Jingbo Yu, Jie Wang, Yingyan Wu, Xudong Zhao, Xinghong Zhu   +23 more
doaj   +1 more source

Determination of the IGRF 2000 model [PDF]

Earth, Planets and Space, 2014
The IGRF 2000 has been estimated from magnetic measurements taken by the Orsted sattelite in summer 1999. For this purpose, three models have been derived: The first two models were estimated using a few geomagnetic quiet days in May and September 1999, respectively.
Olsen, Nils, Sabaka, Terence J., Tøffner-Clausen, Lars   +2 more
openaire   +1 more source

Variación secular reciente y cartas de los elementos del campo geomagnético en México

Geofísica Internacional, 1991
Se presentan cartas sintéticas de los elementos del campo magnético en el territorio nacional, elaboradas con base en el Campo Geomagnético Internacional de Referencia (IGRF).
J. J. Campos Enríquez, J. O. Campos Enríquez, J. Urrutia Fucugauchi   +2 more
doaj   +1 more source

Evaluación preliminar del campo geomagnético de referencia internacional IGRF-1990 para México y anomalías magnéticas corticales

Geofísica Internacional, 1994
Se reporta una comparación regional entre el International Geomagnetic Reference Field (IGRF) para 1990 y medidas geomagneticas de campo obtenidas en 51 localidades del pais.
E. Hernández-Quintero, H. Nolasco-Chavez, J. O. Campos-Enríquez, C. Cañón-Amaro, A. Orozco Torres, J. Urrutia-Fucugauchi, G. Álvarez-García   +6 more
doaj   +1 more source

Bootstrapping Swarm and observatory data to generate candidates for the DGRF and IGRF-13

Earth, Planets and Space, 2020
As posted by the Working Group V of the International Association of Geomagnetism and Aeronomy (IAGA), the 13th generation of the International Geomagnetic Reference Field (IGRF) has been released at the end of 2019.
F. Javier Pavón-Carrasco, Santiago Marsal, J. Miquel Torta, Manuel Catalán, Fátima Martín-Hernández, J. Manuel Tordesillas   +5 more
doaj   +1 more source