Spontaneous substorm onset during a prolonged period of steady, southward interplanetary magnetic field

1996 ◽  
Vol 101 (A11) ◽  
pp. 24583-24598 ◽  
Author(s):  
V. Angelopoulos ◽  
V. A. Sergeev ◽  
F. S. Mozer ◽  
K. Tsuruda ◽  
S. Kokubun ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Substorm Onset

Parameters controlling the substorm onset location

2021 ◽  
Author(s):  
Reham Elhawary ◽  
Karl Laundal ◽  
Jone Reistad ◽  
Anders Ohma ◽  
Spencer Hatch ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Tilt Angle ◽  
Linear Regression Analysis ◽  
Substorm Onset ◽  
Azimuthal Component ◽  
Field Orientation ◽  
Hall Conductance ◽  
Onset Location ◽  
Dipole Tilt

<p>Substorm onset location varies over a range of magnetic local time (MLT) and magnetic latitudes (MLat). It is well known that about 5% of the variation in onset MLT can be explained by variations in interplanetary magnetic field orientation and dipole tilt angle. Both parameters introduce an azimuthal component in the magnetic field in the magnetosphere such that the projection of the onset MLT in the ionosphere is shifted. The MLT of the onset near the magnetopsheric equatorial plane is even less predictable. Recent studies have suggested that gradients in the ionospheric Hall conductance lead to a duskward shift of tail dynamics, which could also influence the location of substorm onset. Our goal is to test these ideas by quantifying the dependence of the spatial variation of the onset location on external and internal conditions. We focus on the correlation between the substorm onset location with conditions prior to the onset, such as the interplanetary magnetic field By component, dipole tilt angle, and estimates of the Hall conductance. Linear regression analysis is used to determine the substorm onset location dependence on the proposed variables.</p>

Interhemispherical asymmetry of substorm onset locations and the interplanetary magnetic field

2011 ◽  
Vol 38 (8) ◽  
pp. n/a-n/a ◽  
Author(s):  
N. Østgaard ◽  
K. M. Laundal ◽  
L. Juusola ◽  
A. Åsnes ◽  
S. E. Håland ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Substorm Onset

scholarly journals Correction to “Interhemispherical asymmetry of substorm onset locations and the interplanetary magnetic field”

2012 ◽  
Vol 39 (10) ◽  
pp. n/a-n/a
Author(s):  
N. Østgaard ◽  
K. M. Laundal ◽  
L. Juusola ◽  
A. Åsnes ◽  
S. E. Haaland ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Substorm Onset

H-Cmes and Ii-Type Radio Bursts Related Intense Geomagnetic Storms in Relation With Interplanetary Magnetic Field and Solar Wind Disturbances

2012 ◽  
Vol 2 (10) ◽  
pp. 1-3 ◽  
Author(s):  
Praveen Kumar Gupta ◽  
◽  
Puspraj Singh Puspraj Singh ◽  
Puspraj Singh Puspraj Singh ◽  
P. K. Chamadia P. K. Chamadia
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Interplanetary Magnetic Field ◽  
Geomagnetic Storms ◽  
Radio Bursts ◽  
Solar Wind Disturbances

The polarity pattern of the interplanetary magnetic field during solar rotations 1798-1808

1967 ◽  
Vol 72 (5) ◽  
pp. 1637-1643 ◽  
Author(s):  
Paul J. Coleman ◽  
Leverett Davis ◽  
Edward J. Smith ◽  
Douglas E. Jones
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field

Characteristics of the association between the interplanetary magnetic field and substorms

1977 ◽  
Vol 82 (29) ◽  
pp. 4837-4842 ◽  
Author(s):  
Michael N. Caan ◽  
Robert L. McPherron ◽  
Christopher T. Russell
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field
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