Zobrazeno 1 - 10
of 13
pro vyhledávání: '"C. D. Beggan"'
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-4 (2022)
Externí odkaz:
https://doaj.org/article/3d4e000bf8ef4e96b80c1b337b5cb81c
Publikováno v:
Geoscientific Instrumentation, Methods and Data Systems, Vol 10, Pp 169-182 (2021)
Measurement of the geomagnetic field in Indonesia is undertaken by the Meteorological, Climatological, and Geophysical Agency (BMKG). Routine activities at each observatory include the determination of declination, inclination, and total field using
Externí odkaz:
https://doaj.org/article/b2aa9e48872f4432a7d6ec733552b0c1
Autor:
P. Alken, E. Thébault, C. D. Beggan, J. Aubert, J. Baerenzung, W. J. Brown, S. Califf, A. Chulliat, G. A. Cox, C. C. Finlay, A. Fournier, N. Gillet, M. D. Hammer, M. Holschneider, G. Hulot, M. Korte, V. Lesur, P. W. Livermore, F. J. Lowes, S. Macmillan, M. Nair, N. Olsen, G. Ropp, M. Rother, N. R. Schnepf, C. Stolle, H. Toh, F. Vervelidou, P. Vigneron, I. Wardinski
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-21 (2021)
Abstract In December 2019, the 13th revision of the International Geomagnetic Reference Field (IGRF) was released by the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group V-MOD. This revision comprises two new sph
Externí odkaz:
https://doaj.org/article/cf29f5eaa8ec4f598156f8a55aa9c73f
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
Modelling geomagnetically induced currents in midlatitude Central Europe using a thin-sheet approach
Autor:
R. L. Bailey, T. S. Halbedl, I. Schattauer, A. Römer, G. Achleitner, C. D. Beggan, V. Wesztergom, R. Egli, R. Leonhardt
Publikováno v:
Annales Geophysicae, Vol 35, Pp 751-761 (2017)
Geomagnetically induced currents (GICs) in power systems, which can lead to transformer damage over the short and the long term, are a result of space weather events and geomagnetic variations. For a long time, only high-latitude areas were conside
Externí odkaz:
https://doaj.org/article/b7bd3b5ab248428ebdbbb6cb405e6bdf
Autor:
C. D. Beggan
Publikováno v:
Annales Geophysicae, Vol 32, Pp 951-958 (2014)
Induction coils permit the measurement of small and very rapid changes of the magnetic field. A new set of induction coils in the UK (at L = 3.2) record magnetic field changes over an effective frequency range of 0.1–40 Hz, encompassing phenomen
Externí odkaz:
https://doaj.org/article/f843b86a1d6a40abaf19b3ff28d75240
Autor:
S. A. McLay, C. D. Beggan
Publikováno v:
Annales Geophysicae, Vol 28, Pp 1795-1805 (2010)
A physically-based technique for interpolating external magnetic field disturbances across large spatial areas can be achieved with the Spherical Elementary Current System (SECS) method using data from ground-based magnetic observatories. The SECS
Externí odkaz:
https://doaj.org/article/6983cf2956954f35bc576d68fbde6d42
Autor:
T. Bozóki, G. Sátori, E. Williams, A. Guha, Y. Liu, P. Steinbach, A. Leal, M. Herein, M. Atkinson, C. D. Beggan, E. DiGangi, A. Koloskov, A. Kulak, J. LaPierre, D. K. Milling, J. Mlynarczyk, A. Neska, A. Potapov, T. Raita, R. Rawat, R. Said, A. K. Sinha, Y. Yampolski
Publikováno v:
Journal of Geophysical Research: Atmospheres. 128
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c385411dd50841336b9b2f5ea9cae7ce
https://doi.org/10.1029/2023jd038557
https://doi.org/10.1029/2023jd038557
Publikováno v:
Journal of Geophysical Research: Space Physics.
We extracted the harmonic frequency separation (Δf) of Ionospheric Alfvén Resonances (IAR) observed in the Eskdalemuir induction coil magnetometer data for the 9 year data set of 2013–2021. To obtain Δf values, we used a machine learning techniq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e7692daae35d89bd01f156f5e50fc89
https://doi.org/10.1029/2023ja031541
https://doi.org/10.1029/2023ja031541
Publikováno v:
Journal of Geophysical Research: Space Physics. 128
We show the global dynamics of spatial correlation of Pc2 wave activity can track the evolution of the 2015 St. Patrick's Day geomagnetic storm for an 8 hr time window around onset. The global spatially coherent response is tracked by forming a dynam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c9f91bbfb0181474de7f14a0b12b447
https://doi.org/10.1029/2022ja031175
https://doi.org/10.1029/2022ja031175