Results 41 to 50 of about 3,266 (155)

Geomagnetism : review 2009 [PDF]

, 2010
The Geomagnetism team measures, records, models and interprets variations in the Earth’s natural magnetic fields, across the world and over time. Our data and expertise help to develop scientific understanding of the evolution of the solid Earth and its ...
Thomson, Alan W.P.
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The BGS magnetic field candidate models for the 12th generation IGRF [PDF]

, 2015
We describe the candidate models submitted by the British Geological Survey for the 12th generation International Geomagnetic Reference Field. These models are extracted from a spherical harmonic ‘parent model’ derived from vector and scalar magnetic ...
Beggan, Ciaran D., Hamilton, Brian, Macmillan, Susan, Ridley, Victoria A.   +3 more
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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

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

Geomagnetic effects on cosmic ray propagation under different conditions for Buenos Aires and Marambio, Argentina [PDF]

, 2014
The geomagnetic field (Bgeo) sets a lower cutoff rigidity (Rc) to the entry of cosmic particles to Earth which depends on the geomagnetic activity. From numerical simulations of the trajectory of a proton using different models for Bgeo (performed with ...
Dasso, Sergio, Masías-Meza, Jimmy J.
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Magnetic observatory data and metadata : types and availability [PDF]

, 2010
The availability of magnetic observatory data has evolved rapidly with the transition of observatories from analogue photographic magnetograms to digital electronic recordings, and the advent of the internet for instant global access to information ...
Alex, Sobhana, Herzog, Donald, Kharin, Evgeny, McLean, Susan, Nose, Masahito, Reay, Sarah, Sergeyeva, Natalia   +6 more
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Imaging ionospheric inhomogeneities using spaceborne synthetic aperture radar [PDF]

, 2011
We present a technique and results of 2-D imaging of Faraday rotation and total electron content using spaceborne L band polarimetric synthetic aperture radar (PolSAR).
Chapman, B., Freeman, A., Li, Z., Pi, X., Rosen, P.   +4 more
core   +2 more sources

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
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Candidate geomagnetic field models for IGRF-14 and secular acceleration since 2020

Earth, Planets and Space
IGRF-14 is the fourteenth generation of the International Geomagnetic Reference Field (IGRF), a spherical harmonic model of Earth’s main magnetic field and its secular variation, developed through international collaboration under the auspices of the ...
Arnaud Chulliat, Manoj Nair, Sam Califf
doaj   +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
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