Climatological predictions of the auroral zone locations driven by moderate and severe space weather events

Autor: Stefano Maffei, Joseph W. B. Eggington, Philip W. Livermore, Jonathan E. Mound, Sabrina Sanchez, Jonathan P. Eastwood, Mervyn P. Freeman

Publikováno v: Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)

Abstract Auroral zones are regions where, in an average sense, aurorae due to solar activity are most likely spotted. Their shape and, similarly, the geographical locations most vulnerable to extreme space weather events (which we term ‘danger zone

Externí odkaz: https://doaj.org/article/16a82ae4957f4065b00b32a60d6e8411

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

Distributions of Birkeland Current Density Observed by AMPERE are Heavy‐Tailed or Long‐Tailed

Autor: John C. Coxon, Gareth Chisham, Mervyn P. Freeman, Brian J. Anderson, Robert C. Fear

Publikováno v: Journal of Geophysical Research: Space Physics. 127

We analyze probability distributions of Birkeland current densities measured by the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE). We find that the distributions are leptokurtic rather than normal and they are someti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bad2b5220052a1fb0eb2ffb517a7ad1
https://doi.org/10.1029/2021ja029801

Interplanetary shock‐induced magnetopause motion: Comparison between theory and global magnetohydrodynamic simulations

Autor: Lars Mejnertsen, R. T. Desai, Martin Archer, Nigel P. Meredith, Richard B. Horne, I. J. Rae, Jonathan Eastwood, Heli Hietala, Frances Staples, Joseph W. B. Eggington, Jeremy Chittenden, Mervyn P. Freeman, Yuri Shprits

Publikováno v: Geophysical Research Letters

The magnetopause marks the outer edge of the Earth's magnetosphere and a distinct boundary between solar wind and magnetospheric plasma populations. In this letter, we use global magnetohydrodynamic simulations to examine the response of the terrestr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf73905b635e3fce984e9badbd72a366
Wiley Online Library

The Impact of Sudden Commencements on Ground Magnetic Field Variability: Immediate and Delayed Consequences

Autor: A. W. Smith, Jonathan Rae, Craig J. Rodger, Mervyn P. Freeman, Colin Forsyth

Publikováno v: Space Weather. 19

We examine how Sudden Commencements (SCs) and Storm Sudden Commencements (SSCs) influence the occurrence of high rates of change of the magnetic field (R) as a function of geomagnetic latitude. These rapid, high amplitude variations in the ground-lev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::541ea1dfb54c94a635e22583fff92fd4
https://doi.org/10.1029/2021sw002764