Results 41 to 50 of about 303 (132)

Tectonic Controls on Volcanism and Associated Hydrothermal Activity in a Sediment‐Dominated Mid‐Ocean Ridge; Escanaba Trough

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract Mid‐ocean ridges, the Earth's most extensive volcanic system, exhibit unique characteristics in sediment‐dominant environments. Thick sediment cover insulates the crust and channels fluid along pathways that can lead to the formation of distinct crustal alteration patterns, exceptionally large mineral deposits, and specialized chemosynthetic ...
Christopher Galley, John Jamieson, Amy Gartman, Isobel Yeo, Masako Tominaga, Maurice Tivey, Carlos Braga, Laura Moore, Sharon L. Walker   +8 more
wiley   +1 more source

Aircraft Ionizing Radiation Exposure for Solar Cycle 24/25 From ARMAS and NAIRAS

Space Weather, Volume 24, Issue 7, July 2026.
Abstract Exposure to ionizing radiation from galactic cosmic rays and solar energetic particles at aviation flight altitudes can have an adverse effect on human health. Although airline crews are classified as radiation workers by the International Commission on Radiological Protection (ICRP), in most countries, their level of exposure is unquantified ...
Daniel B. Phoenix, Christopher J. Mertens, Guillaume P. Gronoff, W. Kent Tobiska   +3 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

Evaluating the Accuracy of Magnetospheric Magnetic Field Models Using Cluster Spacecraft Magnetic Field Measurements

Universe, 2021
Magnetic fields in the inner magnetosphere can be obtained as vector sums of the Earth’s own internal magnetic field and magnetic fields stemming from currents flowing in the space plasma. While the Earth’s internal magnetic field is accurately described
František Němec, Marie Kotková
doaj   +1 more source

How the 29 July 2025 M8.8 Kamchatka Earthquake Shook the Ionosphere Over Japan

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract This study investigates the mid‐field (∼1,100–3,800 km) ionospheric response to the 29 July 2025 Kamchatka earthquake over Japan using multi‐instrument observations, raytracing, and numerical simulations. Total electron content (TEC) observations from GPS satellite G04 and Galileo satellite E10 show a maximum TEC perturbation of ∼0.5–0.85 TECU
R. K. Barad, E. Astafyeva, S. A. Sanchez, E. A. Kherani, I. D. Ouar, C. Maréchal   +5 more
wiley   +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

Изменения геомагнитного поля Антарктики за последнее столетие

Український антарктичний журнал, 2020
Определены особенности изменения геомагнитного поля в Антарктике в XX столетии по данным расчетов по модели IGRF (International Geomagnetic Reference Field) и наблюдений на обсерваториях. Получено, что в Южном полушарии полный вектор геомагнитного поля F
G. Melnyk, V. Bakhmutov, O. Shenderovska   +2 more
doaj   +1 more source

Iridium Communications Satellite Constellation Data for Study of Earth's Magnetic Field

Geochemistry, Geophysics, Geosystems, 2021
Characterization of Earth's magnetic field is key to understanding dynamics of the core. We assess whether Iridium Communications magnetometer data can be used for this purpose since.
Brian J. Anderson, Regupathi Angappan, Ankit Barik, Sarah K. Vines, Sabine Stanley, Pietro N. Bernasconi, Haje Korth, Robin J. Barnes   +7 more
doaj   +1 more source

Quantifying Errors in the Midpoint Transform Applied to Oblique Ionograms

Radio Science, Volume 61, Issue 7, July 2026.
Abstract It is important to specify the state of the ionosphere for Over‐the‐Horizon communications and surveillance. Both vertical and oblique ionograms provide valuable data to this end. Oblique ionograms can probe the ionosphere in locations where it would be impractical to build a vertical ionosonde, but their measurements are not straightforward ...
Joe Hughes, L. J. Nickisch, Sergey Fridman, Gregory Bullock, Shawn Kraut, Matt Hogan, Victoriya Forsythe   +6 more
wiley   +1 more source

Evidence-based uncertainty estimates for the International Geomagnetic Reference Field

Earth, Planets and Space, 2022
The International Geomagnetic Reference Field (IGRF) is a multi-institute model of the Earth’s magnetic field, compactly described by sets of up to 195 spherical harmonic (Gauss) coefficients to degree and order 13, which allows the continuous evaluation
Ciarán D. Beggan
doaj   +1 more source