scholarly journals Investigating the relationships among the South Atlantic Magnetic Anomaly, southern nighttime midlatitude trough, and nighttime Weddell Sea Anomaly during southern summer

2009 ◽  
Vol 114 (A2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Ildiko Horvath ◽  
Brian C. Lovell
Keyword(s):  
Magnetic Anomaly ◽  
South Atlantic ◽  
Weddell Sea ◽  
The South ◽  
Weddell Sea Anomaly

Conjugate F-Region Enhancement Related to the South Atlantic Magnetic Anomaly

Radio Science ◽  
1968 ◽  
Vol 3 (7) ◽  
pp. 680-687
Author(s):  
C. P. Pike ◽  
John R. Herman ◽  
G. J. Gassmann
Keyword(s):  
Magnetic Anomaly ◽  
South Atlantic ◽  
The South ◽  
F Region

Cosmic-ray transport simulation through the atmosphere in the South Atlantic Magnetic Anomaly

2012 ◽  
Author(s):  
M. T. Pazianotto ◽  
O. L. Gonçalez ◽  
C. A. Federico ◽  
B. V. Carlson
Keyword(s):  
Magnetic Anomaly ◽  
Cosmic Ray ◽  
South Atlantic ◽  
The South ◽  
Transport Simulation

scholarly journals Equatorial aurora: the aurora-like airglow in the negative magnetic anomaly

2020 ◽  
Vol 7 (10) ◽  
pp. 1606-1615
Author(s):  
Fei He ◽  
Yong Wei ◽  
Weixing Wan
Keyword(s):  
Magnetic Anomaly ◽  
Systematic Investigation ◽  
Energetic Particles ◽  
South Atlantic ◽  
Upper Atmosphere ◽  
Impact Excitation ◽  
The South ◽  
South Atlantic Anomaly ◽  
Near Earth Space ◽  
Excitation Mechanisms

Abstract The most fantastic optical phenomena in the Earth's upper atmosphere are the auroras. They are highly informative indicators of solar activity, geomagnetic activity, upper atmospheric structures and dynamics, and magnetospheric energetic particles. An area where the geomagnetic field differs significantly from the expected symmetric dipole, such as at the South Atlantic Anomaly, where the magnetic field intensity is low, gives rise to stronger precipitation of energetic particles into the upper atmosphere. Impact excitation and the subsequent airglow emissions exhibit aurora-like dynamic signatures. Nomenclatures of nonpolar aurora or equatorial auroras are similar to those used with the polar auroras owing to their similar excitation mechanisms. This paper provides an overview of the knowledge and the challenges concerning auroral activity at the South Atlantic Anomaly, or more generally, at the negative magnetic anomaly. We emphasize systematic investigation of the equatorial auroras to reveal the temporal and spatial evolution of the magnetic anomaly and the behaviour of energetic particles in near-Earth space.

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