Determining the boundaries of the auroral oval from CHAMP field-aligned current signatures – Part 1
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In this paper, the first statistical study on auroral oval boundaries derived from small and medium-scale field-aligned currents (FACs) was presented, and the results were used for the first time.Abstract:
. In this paper we present the first statistical study on auroral oval boundaries derived from small- and medium-scale field-aligned currents (FACs,read more
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An empirical model of the auroral oval derived from CHAMP field-aligned current signatures – Part 2
Chao Xiong,H. Lühr +1 more
TL;DR: In this paper, the authors introduced a new model for the location of the auroral oval, based on the high-resolution CHAMP (CHAllenging Minisatellite Payload) magnetic field observations during the years 2000-2010.
Journal ArticleDOI
Simultaneous field-aligned currents at Swarm and Cluster satellites
Malcolm Dunlop,Malcolm Dunlop,Junying Yang,Junying Yang,Y. Y. Yang,Chao Xiong,H. Lühr,Y. V. Bogdanova,C. Shen,Nils Olsen,Qing-He Zhang,Jinbin Cao,Huishan Fu,Wenlong Liu,Chris Carr,Patricia Ritter,Arnaud Masson,Roger Haagmans +17 more
TL;DR: In this article, the authors matched signatures of field-aligned currents (FACs) sampled simultaneously near the ionosphere at low (similar to 500km altitude) orbit and in the magnetosphere at medium (approximately 2.5 R-E altitude) orbits using a particular Swarm and Cluster conjunction.
Journal ArticleDOI
Ionospheric storm effects and equatorial plasma irregularities during the 17–18 March 2015 event
TL;DR: In this paper, the authors investigated the influence of storm dynamics on the initiation of equatorial plasma irregularities (EPIs) in the ionosphere during the storm main phase and found that during the recovery phase a strong density enhancement in the morning/pre-noon sector and a severe Ni reduction in the afternoon/evening sector were observed.
Journal ArticleDOI
Magnetopause Erosion During the 17 March 2015 Magnetic Storm: Combined Field-Aligned Currents, Auroral Oval, and Magnetopause Observations
Guan Le,Hermann Lühr,Brian J. Anderson,Robert J. Strangeway,Christopher T. Russell,Howard J. Singer,James A. Slavin,Yongliang Zhang,Tao Huang,Kenneth R. Bromund,Peter Chi,Gang Lu,David Fischer,E. L. Kepko,Hannes K. Leinweber,Werner Magnes,Rumi Nakamura,Ferdinand Plaschke,Jaeheung Park,Jan Rauberg,Claudia Stolle,Roy B. Torbert +21 more
TL;DR: In this article, the authors present multimission observations of field-aligned currents, auroral oval, and magnetopause crossings during the 17 March 2015 magnetic storm and demonstrate the effects of dayside reconnection on the entire magnetosphere.
Journal ArticleDOI
Multispacecraft current estimates at swarm
Malcolm Dunlop,Y. Y. Yang,Junying Yang,H. Lühr,Chao Shen,Nils Olsen,Patricia Ritter,Qing-He Zhang,Jinbin Cao,Huishan Fu,Roger Haagmans +10 more
TL;DR: In this chapter the application of the curlometer technique to various regions of the inner magnetosphere and upper ionosphere and for special circumstances of sampling is described.
References
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Large‐scale characteristics of field‐aligned currents associated with substorms
T. Iijima,T. A. Potemra +1 more
TL;DR: In this paper, the authors determined the statistical features of field-aligned currents during a large number of substorms from the magnetic field observations acquired with the Triad satellite, including the following: (1) the large-scale regions of fieldaligned currents determined previously by the authors (Iijima and Potemra, 1976a) persist during all phases of sub-storm activity, namely, region 1, located near the poleward boundary of the fieldaligned current region, and region 2, positioned near the equatorward boundary.
Journal ArticleDOI
Ionospheric Electrodynamics Using Magnetic Apex Coordinates.
TL;DR: In this paper, the equations of ionospheric electrodynamics are developed for a geomagnetic field of general configuration, with specific application to coordinate systems based on Magnetic Apex Coordinates.
Journal ArticleDOI
Field‐aligned currents in the dayside cusp observed by Triad
T. Iijima,T. A. Potemra +1 more
TL;DR: The characteristics of field-aligned currents at an altitude of 800 km in the dayside highlatitude region over the northern hemisphere were determined from the Triad satellite magnetometer data recorded at College, Alaska, from January 1973 to October 1974 as mentioned in this paper.
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A nearly universal solar wind-magnetosphere coupling function inferred from 10 magnetospheric state variables
TL;DR: In this article, the authors investigated whether one or a few coupling functions can represent best the interaction between the solar wind and the magnetosphere over a wide variety of magnetospheric activity.
Journal ArticleDOI
A statistical model of auroral electron precipitation
TL;DR: In this article, the average characteristics of auroral electron precipitation as a function of magnetic local time, magnetic latitude, and geomagnetic activity as measured by Kp were determined for each whole number value of Kp from 0 to 5 and for Kp ≥ 6.