Results 41 to 50 of about 24,900,530 (148)

Geomagnetic field modelling and USTHB IGRF-14 candidates

Earth, Planets and Space
The present paper describes the construction of a global spherical harmonic model of the geomagnetic field, developed as the USTHB (University of Science and Technology Houari Boumediene) candidate for the 14th generation of International Geomagnetic ...
Abdenaceur Lemgharbi, M. Hamoudi, V. Lesur, M. Mandea, T. Amezza, A. Abtout   +5 more
doaj   +1 more source

IZMIRAN candidate field model for IGRF-13

Earth, Planets and Space, 2021
The International Geomagnetic Reference Field (IGRF) model is a combination of the several models developed by independent groups of scientists using different approaches for the selection of input data and methods for calculating harmonic coefficients ...
Valeriy G. Petrov, Tatyana N. Bondar
doaj   +1 more source

Model 2D of Subsurface Structures in the Dempo Magnetic Area of Pagar Alam City Using Geomagnetic Method

Jurnal Kumparan Fisika, 2023
ABSTRAK   Metode geomagnetik digunakan dalam penelitian ini untuk membuat model 2D struktur bawah permukaan di kawasan Dempo Magnet kota Pagar Alam berdasarkan sebaran anomali. Terdapat 48 titik pengukuran pada lokasi penelitian.
Febri Adrianto Adrianto, Refrizon, Arif Ismul Hadi   +2 more
doaj   +1 more source

Global Implications of Terrain‐Induced Bias in Paleomagnetic Data From 3D Forward Modeling of Mt. Etna

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract In paleomagnetism, records of paleosecular variation (PSV) on centennial timescales are often based on magnetic measurements from lava flows. However, samples from recent flows that cooled in known magnetic fields often fail to produce the expected paleomagnetic directions, and samples from the same flow often show large within‐ and between ...
A. E. Hendrickx, C. Thieulot, L. V. de Groot   +2 more
wiley   +1 more source

International Geomagnetic Reference Field: the eleventh generation [PDF]

, 2010
The eleventh generation of the International Geomagnetic Reference Field (IGRF)was adopted in December 2009 by the International Association of Geomagnetism and Aeronomy Working Group V-MOD.
Mandea, M., Chambodut, A., Thomson, A. W. P., Z. Wei, Rother, M., Maus, S., Tøffner-Clausen, L., Bondar, T. N., Finlay, C.C., Beggan, C.D., M. Menvielle, Chernova, T.A., Chulliat, A., Menvielle, Michel, McLean, S., Toffner-Clausen, L., B. Hamilton, Finlay, C. C., Zvereva, T. I., Hulot, G., T. N. Bondar, Olsen, Nils, Kuang, W., Wardinksi, I., S. Maus, H. Lühr, N. Olsen, Finlay, Christopher Charles, Luehr, H., A. W. P. Thomson, L. Tøffner-Clausen, Menvielle, M., Thomson, A.W.P., S. McLean, T. A. Chernova, Chuillat, A., Holme, R., Macmillan, S., Hamilton, B., Wei, Z., W. Kuang, null null, Golovkov, V.P., Lesur, V., Wardinski, I., Langlais, Benoit, R. Holme, V. P. Golovkov, B. Langlais, Langlais, B., M. Hamoudi, T. J. Sabaka, M. Mandea, Lowes, F. J., Manoj C., Golovkov, V. P., Sabaka, T.J., Finlay, Chris, J. Rauberg, C. Manoj, Bondar, T.N., Olsen, N., Tøffner-Clausen, Lars, Lühr, H., S. Macmillan, E. Thébault, Zvereva, T.I., C. D. Beggan, C. C. Finlay, Michaelis, I., F. J. Lowes, T. I. Zvereva, A. Chambodut, Lowes, F.J., Sabaka, T. J., Tangborn, A., Beggan, C. D., A. Chulliat, Thébault, E., M. Rother, I. Michaelis, Hamoudi, M., Chernova, T. A., G. Hulot, V. Lesur, Rauberg, J., Manoj, C., A. Tangborn, I. Wardinski   +88 more
core   +1 more source

Coordinate Systems and Transforms in Space Physics: Terms, Definitions, Implementations, and Recommendations for Reproducibility

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract In space physics, acronyms for coordinate systems (e.g., GEI, GSM) are commonly used; however, differences in their definitions and implementations can prevent reproducibility. In this work, we compare definitions in online resources, software packages, and frequently cited journal articles and show that implementation differences can lead to ...
R. S. Weigel, A. Y. Shih, R. Ringuette, I. Christopher, S. M. Petrinec, S. Turner, R. M. Candey, G. K. Stephens, B. Cecconi   +8 more
wiley   +1 more source

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

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

Evaluation of candidate models for the 13th generation International Geomagnetic Reference Field

Earth, Planets and Space, 2021
In December 2019, the 13th revision of the International Geomagnetic Reference Field (IGRF) was released by the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group V-MOD.
P. Alken, E. Thébault, C. D. Beggan, J. Aubert, J. Baerenzung, W. J. Brown, S. Califf, A. Chulliat, G. A. Cox, C. C. Finlay, A. Fournier, N. Gillet, M. D. Hammer, M. Holschneider, G. Hulot, M. Korte, V. Lesur, P. W. Livermore, F. J. Lowes, S. Macmillan, M. Nair, N. Olsen, G. Ropp, M. Rother, N. R. Schnepf, C. Stolle, H. Toh, F. Vervelidou, P. Vigneron, I. Wardinski   +29 more
doaj   +1 more source

Discrepancies and Transformation Between Space‐Based and Ground‐Based Dst Indices: Insights From Swarm and CSES

Space Weather, Volume 24, Issue 10, October 2026.
Abstract The Disturbance Storm Time (Dst) index is a critical metric primarily reflecting the intensity of symmetric part of the magnetospheric ring current. Although satellite magnetometry has enabled the calculation of a space‐based Dst index, such measurements exhibit a systematic bias when compared to the conventionally used ground‐based Dst. Using
Mengjie Wang, Yanyan Yang, Yong Ji, Zeren Zhima, Chao Xiong, Jie Wang, Roberto Battiston, Mirko Piersanti, Bin Zhou   +8 more
wiley   +1 more source