scholarly journals Solar wind control of auroral substorm onset locations observed with the IMAGE-FUV imagers

2004 ◽  
Vol 109 (A3) ◽  
Author(s):  
J.-C. Gérard
Keyword(s):  
Solar Wind ◽  
Substorm Onset ◽  
Auroral Substorm

scholarly journals Distinction between auroral substorm onset and traditional ground magnetic onset signatures

2013 ◽  
Vol 118 (7) ◽  
pp. 4080-4092 ◽  
Author(s):  
L. R. Lyons ◽  
Y. Nishimura ◽  
E. Donovan ◽  
V. Angelopoulos
Keyword(s):  
Substorm Onset ◽  
Auroral Substorm ◽  
Ground Magnetic

scholarly journals Simultaneous observation of auroral substorm onset in Polar satellite global images and ground-based all-sky images

2018 ◽  
Vol 70 (1) ◽  
Author(s):  
Akimasa Ieda ◽  
Kirsti Kauristie ◽  
Yukitoshi Nishimura ◽  
Yukinaga Miyashita ◽  
Harald U. Frey ◽  
...  
Keyword(s):  
Substorm Onset ◽  
Simultaneous Observation ◽  
Auroral Substorm ◽  
Polar Satellite

scholarly journals Correction to: Simultaneous observation of auroral substorm onset in Polar satellite global images and ground-based all-sky images

2019 ◽  
Vol 71 (1) ◽  
Author(s):  
Akimasa Ieda ◽  
Kirsti Kauristie ◽  
Yukitoshi Nishimura ◽  
Yukinaga Miyashita ◽  
Harald U. Frey ◽  
...  
Keyword(s):  
Substorm Onset ◽  
Simultaneous Observation ◽  
Auroral Substorm ◽  
Polar Satellite

scholarly journals Correlation between ground-based observations of substorm signatures and magnetotail dynamics

2005 ◽  
Vol 23 (3) ◽  
pp. 997-1011 ◽  
Author(s):  
E. Borälv ◽  
H. J. Opgenoorth ◽  
K. Kauristie ◽  
M. Lester ◽  
J.-M. Bosqued ◽  
...  
Keyword(s):  
Solar Wind ◽  
Event Study ◽  
Plasma Sheet ◽  
Sheet Thickness ◽  
Substorm Onset ◽  
Boundary Motion ◽  
Thickness Variations ◽  
Magnetotail Dynamics

Abstract. We present a substorm event study using the four Cluster spacecraft in combination with ground-based instruments, in order to perform simultaneous observations in the ionosphere and magnetotail. We show good correlation between substorm signatures on the ground and in the magnetotail, even though data from the northern-ground and southern-tail hemispheres are compared. During this event ground-based magnetometers show a substorm onset over Scandinavia in the pre-midnight sector. Within 1.5h the onset and three intensifications are apparent in the magnetograms. For all the substorm signatures seen on the ground, corresponding plasma sheet boundary motion is visible at Cluster, located at a downtail distance of 18.5 RE. As a result of the substorm onset and intensifications, Cluster moves in and out between the southern plasma sheet and lobe. Due to the lack of an apparent solar wind driver and the good correlation between substorm signatures on the ground, we conclude the substorm itself is the driver for these plasma sheet dynamics. We show that in the scales of Cluster inter-spacecraft distances (~0.5 RE) the inferred plasma sheet motion is often directed in both Ygsm- and Zgsm-directions, and discuss this finding in the context of previous studies of tail flapping and plasma sheet thickness variations.

ESTABLISHING THE ORIENTATION OF SHOCK WAVE PLANE OF SOLAR WIND MAGNETIC CLOUD FOR CONCLUSIONS ABOUT THE LEVEL OF AURORAL SUBSTORM ACTIVITY

2019 ◽  
Vol 17 (1) ◽  
pp. 195-202 ◽  
Author(s):  
N. A. Barkhatov ◽  
S. E. Revunov ◽  
M. V. Mukhina ◽  
M. L. Gruzdeva ◽  
O. T. Cherney ◽  
...  
Keyword(s):  
Shock Wave ◽  
Solar Wind ◽  
Magnetic Cloud ◽  
Auroral Substorm ◽  
Substorm Activity

scholarly journals Influences on the radius of the auroral oval

2009 ◽  
Vol 27 (7) ◽  
pp. 2913-2924 ◽  
Author(s):  
S. E. Milan ◽  
J. Hutchinson ◽  
P. D. Boakes ◽  
B. Hubert
Keyword(s):  
Solar Wind ◽  
Ring Current ◽  
Geomagnetic Storms ◽  
Auroral Oval ◽  
Substorm Onset ◽  
Polar Cap ◽  
H Index ◽  
Magnetic Perturbation

Abstract. We examine the variation in the radius of the auroral oval, as measured from auroral images gathered by the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) spacecraft, in response to solar wind inputs measured by the Advanced Composition Explorer (ACE) spacecraft for the two year interval June 2000 to May 2002. Our main finding is that the oval radius increases when the ring current, as measured by the Sym-H index, is intensified during geomagnetic storms. We discuss our findings within the context of the expanding/contracting polar cap paradigm, in terms of a modification of substorm onset conditions by the magnetic perturbation associated with the ring current.

Observation of IMF and seasonal effects in the location of auroral substorm onset

2001 ◽  
Vol 106 (A4) ◽  
pp. 5799-5810 ◽  
Author(s):  
K. Liou ◽  
P. T. Newell ◽  
D. G. Sibeck ◽  
C.-I Meng ◽  
M. Brittnacher ◽  
...  
Keyword(s):  
Substorm Onset ◽  
Seasonal Effects ◽  
Auroral Substorm

Relation of auroral substorm onset to local AL index and dispersionless particle injections

2008 ◽  
Vol 70 (18) ◽  
pp. 2336-2345 ◽  
Author(s):  
James M. Weygand ◽  
R.L McPherron ◽  
K. Kauristie ◽  
H.U. Frey ◽  
T.-S. Hsu
Keyword(s):  
Substorm Onset ◽  
Auroral Substorm
Sign in / Sign up

Export Citation Format

Share Document