Results 51 to 60 of about 1,592 (183)

Spatial Relationship Between the Midlatitude Ionospheric Trough and Plasmaspheric Plumes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract The plasmasphere, a subsystem of the complex geospace environment, is a torus of cold plasma “frozen” into Earth's magnetic field and sourced from the ionosphere. Plasmaspheric plumes–drainage channels formed during geospace storms–have primarily been observed near the equator.
Balázs Heilig, Lilla Murár‐Juhász, Máté Tomasik   +2 more
wiley   +1 more source

IGRF candidate models at times of rapid changes in core field acceleration [PDF]

, 2010
International audienceWe submit three candidate models following the call for IGRF-11. We apply a simple modeling approach in spherical harmonics based on a quadratic Taylor expansion for the internal field time variations.
Maus, Stefan, Langlais, Benoît, Aude Chambodut, Arnaud Chulliat, Hulot, Gauthier, Gauthier Hulot, Chambodut, Aude, Menvielle, Michel, Benoit Langlais, Thébault, Erwan, Chulliat, Arnaud, Michel Menvielle, Erwan Thébault, Stefan Maus   +13 more
core   +1 more source

The Mag.num core field model as a parent for IGRF-13, and the recent evolution of the South Atlantic Anomaly

Earth, Planets and Space, 2021
We present the GFZ candidate field models for the $$13{\mathrm{th}}$$ 13 th  Generation International Geomagnetic Reference Field (IGRF-13). These candidates were derived from the Mag.num.IGRF13 geomagnetic core field model, which is constrained by Swarm
M. Rother, M. Korte, A. Morschhauser, F. Vervelidou, J. Matzka, C. Stolle   +5 more
doaj   +1 more source

Recent Developments in Fabrication Methods and Measurement Schemes for Optically Pumped Magnetic Gradiometers: A Comprehensive Review

Micromachines, 2023
Optically pumped gradiometers have long been utilized in measurement in the International Geomagnetic Reference Field (IGRF). With advancements in technologies such as laser diodes and microfabrication, integrated gradiometers with compact sizes have ...
Haifeng Dong, Hangfei Ye, Min Hu, Zongmin Ma   +3 more
doaj   +1 more source

Tectonic Evolution of the Mariana Trough

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The Mariana Trough is an active back‐arc basin formed by subduction of the Pacific Plate beneath the Philippine Sea Plate and provides an ideal setting for investigating the evolution of back‐arc basins. In this study, we compile bathymetric, magnetic, and gravity data to reconstruct the formation history of the entire basin.
Seitaro Ono, Kyoko Okino, Nobukazu Seama, Toshitsugu Yamazaki, Hisanori Iwamoto   +4 more
wiley   +1 more source

A 2015 International Geomagnetic Reference Field (IGRF) candidate model based on Swarm’s experimental absolute magnetometer vector mode data [PDF]

, 2015
Each of the three satellites of the European Space Agency Swarm mission carries an absolute scalar magnetometer (ASM) that provides the nominal 1-Hz scalar data of the mission for both science and calibration purposes.
Fratter, Isabelle, Léger, Jean-Michel, Hulot, Gauthier, Lalanne, Xavier, Jager, Thomas, Bertrand, François, Vigneron, Pierre, Sirol, Olivier, Boness, Axel, Chulliat, Arnaud, Olsen, Nils, Brocco, Laura, Coïsson, Pierdavide   +12 more
core   +1 more source

International geomagnetic reference field: the fourteenth generation

Earth, Planets and Space
In November 2024, the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group (V-MOD) adopted the fourteenth generation of the International Geomagnetic Reference Field (IGRF). This IGRF updates the previous generation with
C. D. Beggan, C. Kloss, P. Amblard, T. Amezza, H. Amit, J. Aubert, J. Baerenzung, J. Bregnhøj Lauridsen, W. Brown, S. Califf, S. A. Campuzano, L. Chauvet, A. Chulliat, R. Claveau, P. Coïsson, M. da Silva, C. Davies, R. Deborde, M. Dobrovolsky, M. Fillion, C. C. Finlay, I. Firsov, A. Fournier, L. Gailler, N. Gillet, N. Gomez Perez, A. Grayver, K. Gwirtz, M. Hamoudi, R. Holme, M. Holschneider, G. Hulot, T. Jager, Y. Jiang, M. Kada, M. Korte, R. Krasnoperov, W. Kuang, D. Kudin, J. M. Léger, A. Lemgharb, V. Lesur, P. Liu, P. W. Livermore, F. D. Madsen, M Mandea, M. Matsushima, J. Matzka, I. Michaelis, T. Minami, M. Nair, S. Nakano, J-F. Oehler, N. Olsen, F. J. Pavón-Carrasco, S. Presnyakov, B. Qian, X. Rang, H. F. Rogers, M. Rother, D. Rouxel, T. Sabaka, S. Sato, J. Saynisch-Wagner, M. Schanner, M. Serrano, N. Shakespeare-Rees, Y. Shi, A. Smith, A. Soloviev, F. Terra-Nova, E. Thebault, L. Tøffner-Clausen, H. Toh, J. Wang, I. Wardinski, C. Watson, K. Whaler, C. Xiong, Q. Yan, Y. Yang, H. Yao, Z. Zeren, K. Zhang, B. Zhou   +84 more
doaj   +1 more source

Candidate main-field models for producing the 9th generation IGRF [PDF]

, 2005
International audienceThis paper presents the various candidate models used in deriving the 9th generation IGRF. Based on notes submitted to the IAGA working group V-MOD with the Gauss coefficients, a brief description of the data used and the method of ...
Mandea, Mioara
core   +1 more source

The working of the IGRF 2000 Task Force [PDF]

Earth, Planets and Space, 2014
At its meeting in July 1999, the IAGA Working Group for Analysis of the Global and Regional Geomagnetic Field and Secular Variation (WG V-8) felt unable to decide on a main-field model to use for IGRF 2000. It therefore set up a small Task Force with the remit to produce a model by the end of the year. This paper is the Chairman’s report of the working
openaire   +1 more source

An assessment on the Mexico gravity network and its integration to IGRF

, 2022
This presentation informs about the status of the national reference gravity network in Mexico as it was on 2022 and about the results of absolute gravity surveys performed on 2018, which bring some reference stations referred to the most recent standards of the International Gravity Reference Frame.
Avalos Naranjo, David, Alvarado Cortes, Apolo, Mendoza Martinez, Marco Antonio, Pagiatakis, Spiros, Medina Parra, Francisco Javier, Robles Bravo, Jordan, Saravia Corona, Jovany, Arellano Sánchez, Javier   +7 more
openaire   +2 more sources