Zobrazeno 1 - 10
of 486
pro vyhledávání: '"A. Grayver"'
Autor:
P. Alken, E. Thébault, C. D. Beggan, H. Amit, J. Aubert, J. Baerenzung, T. N. Bondar, W. J. Brown, S. Califf, A. Chambodut, A. Chulliat, G. A. Cox, C. C. Finlay, A. Fournier, N. Gillet, A. Grayver, M. D. Hammer, M. Holschneider, L. Huder, G. Hulot, T. Jager, C. Kloss, M. Korte, W. Kuang, A. Kuvshinov, B. Langlais, J.-M. Léger, V. Lesur, P. W. Livermore, F. J. Lowes, S. Macmillan, W. Magnes, M. Mandea, S. Marsal, J. Matzka, M. C. Metman, T. Minami, A. Morschhauser, J. E. Mound, M. Nair, S. Nakano, N. Olsen, F. J. Pavón-Carrasco, V. G. Petrov, G. Ropp, M. Rother, T. J. Sabaka, S. Sanchez, D. Saturnino, N. R. Schnepf, X. Shen, C. Stolle, A. Tangborn, L. Tøffner-Clausen, H. Toh, J. M. Torta, J. Varner, F. Vervelidou, P. Vigneron, I. Wardinski, J. Wicht, A. Woods, Y. Yang, Z. Zeren, B. Zhou
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-25 (2021)
Abstract In December 2019, the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group (V-MOD) adopted the thirteenth generation of the International Geomagnetic Reference Field (IGRF). This IGRF updates the previous ge
Externí odkaz:
https://doaj.org/article/74260ca58a794f5f8fba606014ac7852
Tidal flow of seawater across the Earth's magnetic field induces electric currents and magnetic fields within the ocean and solid Earth. The amplitude and phase of the induced fields depends on electrical properties of both the seawater and the solid
Externí odkaz:
http://arxiv.org/abs/2404.03504
Many stars of different spectral types with planets in the habitable zone are known to emit flares. Until now, studies that address the long-term impact of stellar flares and associated Coronal Mass Ejections (CMEs) assumed that the planet's interior
Externí odkaz:
http://arxiv.org/abs/2211.06140
Autor:
Finlay, Christopher C., Kloss, Clemens, Olsen, Nils, Hammer, Magnus D., Tøffner-Clausen, Lars, Grayver, Alexander, Kuvshinov, Alexey
Publikováno v:
Earth Planets and Space 72 (2020)
We present the CHAOS-7 model of the time-dependent near-Earth geomagnetic field between 1999 and 2020 based on magnetic field observations collected by the low-Earth orbit satellites {\it Swarm}, CryoSat-2, CHAMP, SAC-C and {\O}rsted, and on annual d
Externí odkaz:
http://arxiv.org/abs/2010.11313
Electric currents induced in conductive planetary interiors by time-varying magnetospheric and ionospheric current systems have a significant effect on electromagnetic (EM) field observations. Complete characterization of EM induction effects is diff
Externí odkaz:
http://arxiv.org/abs/2009.01525
Autor:
Grayver, Eugene, Utter, Alexander
Software defined radio is a widely accepted paradigm for design of reconfigurable modems. The continuing march of Moore's law makes real-time signal processing on general purpose processors feasible for a large set of waveforms. Data rates in the low
Externí odkaz:
http://arxiv.org/abs/2001.03645
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Autor:
Jingtao Min, Alexander Grayver
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-31 (2023)
Abstract Time-varying electromagnetic field observed on the ground or at a spacecraft consists of contributions from (i) electric source currents, such as those in the ionosphere and magnetosphere, and (ii) corresponding fields induced by source curr
Externí odkaz:
https://doaj.org/article/a61c4132567e4d1e9b5fcb7cdda0f723
Autor:
Grayver, Alexander V., Noir, Jerome
This study reports an approach and presents its open-source implementation for quantitative analysis of experimental flows using streak images and Convolutional Neural Networks (CNN). The latter are applied to retrieve a length and an angle from stre
Externí odkaz:
http://arxiv.org/abs/1907.09766
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 11, p 245 (2024)
We provide a comprehensive study of Enceladus’s time-variable magnetic field environment and identify in measurements of the Cassini spacecraft signatures that appear to be consistent with induced fields from the moon’s interior. Therefore, we fi
Externí odkaz:
https://doaj.org/article/ae0247bd489f42ac88123503634f6b38