Investigation of the Differences in Onset Times for Magnetically Conjugate Magnetometers

Autor: James M. Weygand, Eftyhia Zesta, Akira Kadokura, Denny M. Oliveira

Publikováno v: Frontiers in Astronomy and Space Sciences, Vol 9 (2022)

We have identified nearly 1,000 onsets using two pairs of hemispheric conjugate ground magnetometers where the onset is defined based on a sharp decline in the H component of the magnetic field at a ground magnetometer station. Specifically, we used

Externí odkaz: https://doaj.org/article/9b4844bfcdbd44dfac8fb5c5c61d67e1

Annales Geophysicae

Autor: Paul Prikryl, Robert G. Gillies, David R. Themens, James M. Weygand, Evan G. Thomas, Shibaji Chakraborty

Publikováno v: Annales Geophysicae. 40:619-639

During minor to moderate geomagnetic storms, caused by corotating interaction regions (CIRs) at the leading edge of high-speed streams (HSSs), solar wind Alfven waves modulated the magnetic reconnection at the dayside magnetopause. The Resolute Bay I

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e884e55bed99a2fa35b574c24331630e
https://doi.org/10.5194/angeo-40-619-2022

Atmospheric gravity waves generated by solar wind high-speed stream Alfvén waves

Autor: Paul Prikryl, David R. Themens, Jaroslav Chum, Shibaji Chakraborty, Robert G. Gillies, James M. Weygand

Solar wind Alfvén waves in high-speed streams from coronal holes modulate dayside ionospheric convection and currents, including auroral electrojets [1]. They generate large- to medium-scale atmospheric gravity waves (AGWs) propagating globally from

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4220af42e5159cdc851162d2eac598d
https://doi.org/10.5194/egusphere-egu23-3911

Drivers of rapid geomagnetic variations at high latitudes

Autor: Liisa Juusola, Ari Viljanen, Andrew P. Dimmock, Mirjam Kellinsalmi, Audrey Schillings, James M. Weygand

Publikováno v: eISSN

We have examined the most intense external (magnetospheric and ionospheric) and internal (induced) |dH/dt| (amplitude of the 10 s time derivative of the horizontal geomagnetic field) events observed by the high-latitude International Monitor for Auro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::794639fe0c865831c4c762d1f2290637
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-496705

Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation

Autor: Mark J. Engebretson, Laura E. Simms, Viacheslav A. Pilipenko, Lilia Bouayed, Mark B. Moldwin, James M. Weygand, Michael D. Hartinger, Zhonghua Xu, C. Robert Clauer, Shane Coyle, Anna N. Willer, Mervyn P. Freeman, Andy J. Gerrard

Publikováno v: Engebretson, M J, Simms, L E, Pilipenko, V A, Bouayed, L, Moldwin, M B, Weygand, J M, Hartinger, M D, Xu, Z, Clauer, C R, Coyle, S, Willer, A N, Freeman, M P & Gerrard, A J 2022, ' Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation ', Journal of Geophysical Research: Space Physics, vol. 127, no. 10, e2022JA030580 . https://doi.org/10.1029/2022JA030580

Nearly all studies of impulsive geomagnetic disturbances (GMDs, also known as magnetic perturbation events MPEs) that can produce dangerous geomagnetically induced currents (GICs) have used data from the northern hemisphere. In this study, we investi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a46347b16ad0d2ee76e5e71e54c64bc
https://hdl.handle.net/10919/113933