Results 51 to 60 of about 525 (164)

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

Advancing Heliophysics and Space Weather Modeling Through Open Science

Space Weather, Volume 24, Issue 6, June 2026.
Abstract We present a community‐wide effort to develop a strategy and action plan to advance heliophysics and space weather modeling through open science. While open science has the potential to enhance the quality and pace of scientific discovery, its application to scientific modeling requires more careful consideration regarding open data and open ...
C. Corti, M. M. Kuznetsova, M. A. Reiss, J. Yue, J. Karpen, C. N. Arge, F. Bacchini, C. Bard, S. Bruinsma, R. M. Caplan, L. K. S. Daldorff, P. J. Deka, C. R. DeVore, S. Elvidge, N. Ganushkina, J. D. Huba, B. V. Jackson, V. Jordanova, J. A. Linker, H. Liu, J. G. Luhmann, S. Markidis, P. Mayank, V. Merkin, N. Moens, D. Odstrcil, Y. A. Omelchenko, M. Palmroth, S. Poedts, A. J. Ridley, Y. Shou, V. Tenishev, D. R. Themens, G. Toth, W. Wang, R.‐P. Wilhelm, M. A. Young, B. Cecconi, M.‐Y. Chou, D. De Zeeuw, G. L. Delzanno, C. Didigu, M. El Alaoui, S. Fung, J. Green, Z. Huang, L. K. Jian, L. J. Landwer, M. Lesko, P. MacNeice, A. Masson, M. L. Mays, P. M. Mehta, M. S. Miesch, E. Palmerio, M. Petrenko, E. Provornikova, L. Rastätter, L. Rusaitis, N. Sachdeva, E. Samara, D. Sur, A. Taktakishvili, J. Topper, T. Tsui, C. Verbeke, J. Wang, C. Wiegand, M. Wiltberger, Y. Zheng, M. M. Bisi, M. K. Georgoulis, T. Kodikara, T. Pulkkinen, A. Chartier, D. da Silva, A. Faturahman, K. Garcia‐Sage, D. Kondrashov, V. E. Ledvina, W. Liu, C. Pandey, E. Resnick, C. Shi, R. S. Weigel, K. Whitman, I. Zakharenkova, K. Zhang   +87 more
wiley   +1 more source

Dynamics of High‐Latitude Energy Conversion in the Upper Thermosphere Based on 9‐Year Measurements From FPI and Dynasonde in Tromsø, Norway

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract This study highlights the need to re‐evaluate energy transfer in the upper thermosphere at high latitudes through analysis of 9‐year measurements of neutral wind (u) from a Fabry‐Perot interferometer and ion velocity (v) from a Dynasonde in Tromsø, Norway.
S. Oyama, H. Vanhamäki, L. Cai, K. Hosokawa, K. Shiokawa, T. Sakanoi   +5 more
wiley   +1 more source

On the Formation of the E Region Layers at Low Altitudes—Theory

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract An analysis of E region ion layer formation is presented, including the effects of a non‐dipole geomagnetic field and gravity on vertical ion drifts, with a particular focus on E region layers at lower altitudes (ELLAs). For nonzero magnetic declination, meridional winds can have an effect similar to those of zonal winds.
E. Nossa, J. Krall, J. D. Huba, M. Jones Jr.   +3 more
wiley   +1 more source

Ionospheric Vertical Plasma Drifts Over South America: Long‐Term Multi‐Instrument Observations and TIEGCM and WACCM‐X Evaluations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract We present the first comprehensive multi‐instrument climatological study of quiet‐time equatorial F‐region vertical plasma drifts across South America, a region where the magnetic declination angle varies significantly. Our analysis of well‐established long‐term ground‐based data sets from the Jicamarca incoherent scatter radar spanning 1968 ...
Sophia R. Laranja, Bela G. Fejer, Clezio M. Denardini, Ludger Scherliess, Laysa C. A. Resende, Sony S. Chen, Giorgio A. S. Picanço   +6 more
wiley   +1 more source

A Unified Vector Electromagnetic Framework for Ionospheric Scintillation and Polarization Effects in GNSS

Radio Science, Volume 61, Issue 6, June 2026.
Abstract The ionosphere imposes coupled amplitude, phase, and polarization distortions on trans‐ionospheric Global Navigation Satellite System (GNSS) signals, reflecting the structure and dynamics of electron‐density irregularities. Classical weak‐scatter theory provides a mature framework for interpreting amplitude and phase scintillation, but these ...
T. Durgonics, S. S. Beeck
wiley   +1 more source

Investigation of Regional Geomagnetic Field Modelling in Indonesia

, 2021
This thesis deals with the application of the Spherical Cap Harmonic Analysis (SCHA) modelling technique to obtain geomagnetic field models for Indonesia, which have better resolution and accuracy than the International Geomagnetic Reference Field (IGRF).
Setiawan, Yosi (10209992)
core   +1 more source

Mechanisms of Body Alignment in a Diurnal Songbird Migrant

Ethology, Volume 132, Issue 6, Page 399-411, June 2026.
The graphical abstract illustrates the body alignment mechanism of a diurnal songbird migrant, the dunnock (Prunella modularis). Dunnocks consistently expressed an angular body alignment, with inter‐individual variation at the level of the population.
Christina Spiliopoulou, Giuseppe Bianco, Mihaela Ilieva, Susanne Åkesson   +3 more
wiley   +1 more source

On the Peculiar Properties of Extremely Low Frequency Lightning Generated Whistlers Detected at Low Earth Orbit Altitudes Close to the Magnetic Equator

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Lightning strikes generate broadband electromagnetic signals. At Extremely Low Frequencies (ELF), these signals partly leak into the ionosphere and produce so‐called Lightning Generated (LG) whistlers that the Absolute Scalar Magnetometers on board the ESA Swarm satellites can detect.
M. Jenner, P. Coïsson, G. Hulot, L. Chauvet, R. Deborde   +4 more
wiley   +1 more source

The International Geomagnetic Reference Field (IGRF) 13th generation spherical harmonic model coefficients

<p>Archive of the IGRF13 model coefficients provided by <a href="https://www.ncei.noaa.gov/products/international-geomagnetic-reference-field">NOAA's NCEI</a> as presented in <a href="https://doi.org/10.1186/s40623-020-01288-x"> ...
Uieda, Leonardo, Fatiando a Terra Project   +1 more
core   +1 more source