Results 31 to 40 of about 10,218,549 (296)

The influence of the geomagnetic field and of the uncertainties in the primary spectrum on the development of the muon flux in the atmosphere [PDF]

, 2004
In this paper we study the sensitivity of the flux of atmospheric muons to uncertainties in the primary cosmic ray spectrum and to the treatment of the geomagnetic field in a calculation.
A. Fasso, A. V. Apanasenko, J. P. Wefel, K. Daum, M. Aglietta, M. Ambriola, N. N. Kalmykov, N. N. Kalmykov, N. N. Kalmykov, P. Hansen, P. Lipari, R. Engel, R. Engel, S. J. Sciutto, S. J. Sciutto, S. J. Sciutto, T. K. Gaisser, T. Kafka, T. Stanev, T. K. Gaisser   +19 more
core   +2 more sources

Error model of geomagnetic-field measurement and extended Kalman-filter based compensation method. [PDF]

PLoS ONE, 2017
The real-time accurate measurement of the geomagnetic-field is the foundation to achieving high-precision geomagnetic navigation. The existing geomagnetic-field measurement models are essentially simplified models that cannot accurately describe the ...
Zhilei Ge, Suyun Liu, Guopeng Li, Yan Huang, Yanni Wang   +4 more
doaj   +1 more source

The nature of the highest energy cosmic rays [PDF]

, 1996
Ultra high energy gamma rays produce electron--positron pairs in interactions on the geomagnetic field. The pair electrons suffer magnetic bremsstrahlung and the energy of the primary gamma ray is shared by a bunch of lower energy secondaries.
A. M. Hillas, B. McBreen, D. J. Bird, D. J. Bird, E. Waxman, F. A. Aharonian, F. Halzen, G. Sigl, H. P. Vankov, H. P. Vankov, J. P. Rachen, J. Szabelski, L. J. Kewley, M. Milgrom, M. Vietri, N. Hayashida, N. Hayashida, N. Hayashida, P. Bhattacharjee, R. A. Langel, T. Erber, T. J. L. McComb, T. K. Gaisser, T. Stanev, T. Stanev, Todor Stanev, X. Chi   +26 more
core   +3 more sources

Can core-surface flow models be used to improve the forecast of the Earth's main magnetic field? [PDF]

, 2008
[1] Geomagnetic main field models used for navigation are updated every 5 years and contain a forecast of the geomagnetic secular variation for the upcoming epoch. Forecasting secular variation is a difficult task.
Alexandrescu, Alexandrescu, Alexandrescu, Backus, Backus, Bloxham, Bloxham, Bloxham, Braginsky, Courtillot, Eymin, Fournier, Gauthier Hulot, Gubbins, Holme, Holme, Hulot, Hulot, Hulot, Hulot, Jackson, Jackson, Jault, Jault, Langel, Le Huy, LeMouël, Liu, Luis Silva, Maus, Maus, Maus, Menke, Mound, Olsen, Olsen, Pais, Rau, Roberts, Sabaka, Stefan Maus, Voorhies, Voorhies, Voorhies, Waddington, Whaler, Zatman   +46 more
core   +5 more sources

Analytic Calculation of Geoelectric Fields Due to Geomagnetic Disturbances: A Test Case

IEEE Access, 2019
Geomagnetic field variations produce geoelectric fields that can affect the operation of technological networks at the Earth's surface, including power systems, pipelines, phone cables and railway circuits.
David H. Boteler, Risto J. Pirjola, Luis Marti   +2 more
doaj   +1 more source

Sq and EEJ—A Review on the Daily Variation of the Geomagnetic Field Caused by Ionospheric Dynamo Currents

, 2017
A record of the geomagnetic field on the ground sometimes shows smooth daily variations on the order of a few tens of nano teslas. These daily variations, commonly known as Sq, are caused by electric currents of several μA/m2$\upmu \mbox{A}/\mbox{m}^{2}$
Y. Yamazaki, A. Maute
semanticscholar   +1 more source

Extending Global Continuous Geomagnetic Field Reconstructions on Timescales Beyond Human Civilization

Geochemistry Geophysics Geosystems, 2018
Study of the late Quaternary geomagnetic field contributes significantly to understanding the origin of millennial‐scale paleomagnetic secular variations, the structure of geomagnetic excursions, and the long‐term shielding by the geomagnetic field.
S. Panovska, C. Constable, M. Korte
semanticscholar   +1 more source

Multiscale variation model and activity level estimation algorithm of the Earth's magnetic field based on wavelet packets [PDF]

Annales Geophysicae, 2018
We suggest a wavelet-based multiscale mathematical model of geomagnetic field variations. The model is particularly capable of reflecting the characteristic variation and local perturbations in the geomagnetic field during the periods of increased ...
O. V. Mandrikova, O. V. Mandrikova, I. S. Solovyev, I. S. Solovyev, S. Y. Khomutov, V. V. Geppener, D. M. Klionskiy, M. I. Bogachev   +7 more
doaj   +1 more source

International Geomagnetic Reference Field: the 12th generation

Earth, Planets and Space, 2015
The 12th generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2014 by the Working Group V-MOD appointed by the International Association of Geomagnetism and Aeronomy (IAGA).
E. Thébault, C. Finlay, C. Beggan, P. Alken, J. Aubert, O. Barrois, F. Bertrand, T. Bondar, A. Boness, L. Brocco, Elisabeth Canet, A. Chambodut, A. Chulliat, P. Coïsson, F. Civet, A. Du, A. Fournier, I. Fratter, N. Gillet, B. Hamilton, M. Hamoudi, G. Hulot, T. Jager, M. Korte, W. Kuang, X. Lalanne, B. Langlais, J. Leger, V. Lesur, F. Lowes, S. Macmillan, M. Mandea, C. Manoj, S. Maus, N. Olsen, V. Petrov, Victoria Ridley, M. Rother, T. Sabaka, D. Saturnino, R. Schachtschneider, O. Sirol, A. Tangborn, A. Thomson, L. Tøffner‐Clausen, P. Vigneron, I. Wardinski, T. Zvereva   +47 more
semanticscholar   +1 more source

Continuous underground observation of the geomagnetic field in Xuzhou City, North China, and its time-varying characteristics

Frontiers in Earth Science
Underground space in Xuzhou City, North China, has become a favorable site for continuous geomagnetic observation to reveal geomagnetic-field variations and to monitor seismic activity due to its distinct advantage of an “ultra-quiet” and “ultra-clean ...
Mei Han, Mei Han, Lianghui Guo, Lianghui Guo, Lianghui Guo, Yun Wang, Yun Wang, Xiang Wang, Xiang Wang   +8 more
doaj   +1 more source