Results 61 to 70 of about 3,303 (168)

Evidence for a Localized Burst of Relativistic Electrons Produced in Earth's Plasma Sheet During a Substorm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Earth's magnetotail and its plasma sheet are highly dynamic, influenced by both the solar wind and the inner magnetosphere. Periodically, energy is explosively released in the magnetotail during substorms. However, the extent to which electrons are accelerated in the magnetotail remains an open question, with recent observations revealing ...
M. Shumko, D. L. Turner, A. Y. Ukhorskiy, I. J. Cohen, G. K. Stephens, A. Artemyev, X. Zhang, C. Wilkins, E. Tsai, C. Gabrielse, S. Raptis, M. Sitnov, V. Angelopoulos   +12 more
wiley   +1 more source

A New Orthogonal Geomagnetic Coordinate System: The Generalized Eccentric Dipole

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The study of near‐Earth plasma environment relies heavily on accurate geomagnetic coordinate systems, mainly because the plasma motion is controlled by the E×B $\boldsymbol{E}\times \boldsymbol{B}$ drift and thus is constrained by the structure of the magnetic field.
Antoine Resseguier, Pierre‐Louis Blelly, Aurélie Marchaudon   +2 more
wiley   +1 more source

International Geomagnetic Reference Field: the eleventh generation [PDF]

, 2017
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. It updates the previous IGRF generation with a definitive main
Beggan, C. D., Bondar, T. N., Chambodut, A., Chernova, T. A., Chulliat, A., Finlay, C. C., Golovkov, V. P., Hamilton, B., Hamoudi, M., Holme, R., Hulot, G., Kuang, W., Langlais, B., Lesur, V., Lowes, F. J., Lühr, H., Macmillan, S., Mandea, M., Manoj, C., Maus, S., McLean, S., Menvielle, M., Michaelis, I., Olsen, N., Rauberg, J., Rother, M., Sabaka, T. J., Tangborn, A., Thomson, A. W. P., Thébault, E., Tøffner-Clausen, L., Wardinski, I., Wei, Z., Zvereva, T. I.   +33 more
core  

Time evolution of the South Atlantic Magnetic Anomaly [PDF]

, 2009
The South Atlantic Magnetic Anomaly (SAMA) is one of the most outstanding anomalies of the geomagnetic field. The SAMA secular variation was obtained and compared to the evolution of other anomalies using spherical harmonic field models for the 1590-2005
HARTMANN, Gelvam A., PACCA, Igor G.
core   +2 more sources

Modeling Study on Energetic Particle Distribution in the Ionospheric South Atlantic Anomaly at Height of the Space Station

Space Weather, Volume 24, Issue 4, April 2026.
Abstract The South Atlantic Anomaly (SAA) in Earth's radiation belt is a critical region that poses significant threats to the safety of Space Stations. This region harbors a high concentration of energetic particles that can penetrate Space Stations, thereby affecting onboard components and posing risks to astronauts.
Xiang Dong, Tao Yang, Mingchen Sun, Haimeng Li, Qinglin Zhu, Yifan Zhang   +5 more
wiley   +1 more source

On the usage of geomagnetic indices for data selection in internal field modelling [PDF]

, 2016
We present a review on geomagnetic indices describing global geomagnetic storm activity (Kp, am, Dst and dDst/dt) and on indices designed to characterize high latitude currents and substorms (PC and AE-indices and their variants).
A. Janzhura, A. Karinen, A. Pulkkinen, A. Viljanen, A.D. Richmond, A.J. Ridley, A.T.Y. Lui, A.W.P. Thomson, B. Hamilton, B. Hnat, B. Tsurutani, B.-H. Ahn, C.-S. Huang, C.C. Finlay, C.C. Finlay, C.C. Finlay, C.G. Constable, E. Friis-Christensen, E. Thébault, E.I. Kallio, E.I. Tanskanen, E.I. Tanskanen, F.K. Chun, G. Rostoker, G. Rostoker, H. McCreadie, H. Nevanlinna, H.J. Opgenoorth, J. Gannon, J. Love, J. Takalo, J.A. Wanliss, J.H. Allen, J.R. Kan, J.V. Lincoln, J.W. Gjerloev, K. Kauristie, K. Kauristie, K. Liou, K. Liou, K.A. Anderson, K.B. Baker, L. Juusola, L. Svalgaard, L. Svalgaard, M. Lockwood, M. Menvielle, M. Menvielle, M. Siebert, M. Sugiura, M. Sugiura, M. Temerin, M.G. Kivelson, N. Olsen, N. Olsen, N. Olsen, N. Olsen, N. Olsen, N. Olsen, N. Partamies, N. Østgaard, N.A. Tsyganenko, O. Troshichev, O. Troshichev, O.A. Troshichev, O.A. Troshichev, O.A. Troshichev, P. Ritter, P. Stauning, P. Stauning, P. Stauning, P.N. Mayaud, P.N. Mayaud, P.T. Newell, P.T. Newell, P.T. Newell, P.T. Newell, P.T. Newell, R.A.D. Fiori, R.E. Lopez, R.L. McPherron, R.L. McPherron, R.L. McPherron, R.W. Spiro, S. Chapman, S. Macmillan, S. Maus, S. Maus, S. Maus, S. Vennerstrøm, T. Iyemori, T.J. Sabaka, T.N. Davis, V. Lesur, V. Lesur, W. Baumjohann, W. Kertz, X. Chu, X. Chu, Y. Gao   +99 more
core   +1 more source

New Phoenix Magnetic Anomaly Data Confirms Global Nature of Jurassic Quiet Zone and Provides Insight Into Early Pacific Spreading

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract We demonstrate the presence of the oldest identifiable marine magnetic anomalies in the Phoenix lineations of the western Pacific based on careful assessment of new data. Recently acquired sea surface magnetic anomalies and multichannel seismic profiles confirm magnetic signals recorded within the Middle‐Jurassic to Early Cretaceous basement ...
Masako Tominaga, Maurice A. Tivey, Hannah F. Mark, William W. Sager, Jonas Preine   +4 more
wiley   +1 more source

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   +1 more source

Evidence from Strandings for Geomagnetic Sensitivity in Cetaceans [PDF]

, 1986
We tested the hypothesis that cetaceans use weak anomalies in the geomagnetic field as cues for orientation, navigation and/or piloting. Using the positions of 212 stranding events of live animals in the Smith sonian compilation which fall within the ...
Dizon, Andrew E., Kirschvink, Joseph L., Westphal, James A.   +2 more
core  

Locations of Auroral Kilometric Radiation Bursts Inferred From Multi-Spacecraft Wideband Cluster VLBI Observations i: Description of Technique and Initial Results

, 2003
The Cluster Wideband Data instrument has been used to determine the locations of auroral kilometric radiation (AKR) using very long baseline interferometry.
Alexander, Alexander, Alexander, Barton, Burns, Ergun, Feldstein, Frank, Gaelzer, Gaelzer, Gallagher, Gallagher, Gurnett, Gurnett, Huff, Kaiser, Kaiser, Kurth, Louarn, R. L. Mutel, Schreiber, Wu   +21 more
core   +1 more source