scholarly journals Poleward moving auroral arcs observed at the South Pole Station and the interpretation by field line resonances

2012 ◽  
Vol 117 (A9) ◽  
pp. n/a-n/a ◽  
Author(s):  
Y.-M. Tanaka ◽  
Y. Ebihara ◽  
S. Saita ◽  
A. Yoshikawa ◽  
Y. Obana ◽  
...  
Keyword(s):  
Field Line ◽  
South Pole ◽  
The South ◽  
Field Line Resonances ◽  
Auroral Arcs

scholarly journals Discrete Auroral Arcs and Nonlinear Dispersive Field Line Resonances

1999 ◽  
Vol 26 (6) ◽  
pp. 663-666 ◽  
Author(s):  
R. Rankin ◽  
J. C. Samson ◽  
V. T. Tikhonchuk
Keyword(s):  
Field Line ◽  
Field Line Resonances ◽  
Auroral Arcs

scholarly journals Optical signatures of auroral arcs produced by field line resonances: comparison with satellite observations and modeling

2003 ◽  
Vol 21 (4) ◽  
pp. 933-945 ◽  
Author(s):  
J. C. Samson ◽  
R. Rankin ◽  
V. T. Tikhonchuk
Keyword(s):  
Phase Shift ◽  
Field Line ◽  
Electric Fields ◽  
Low Frequency ◽  
Optical Data ◽  
Field Line Resonance ◽  
Field Line Resonances ◽  
Line Resonance ◽  
Field Lines ◽  
Auroral Arcs

Abstract. We show two examples from the CANOPUS array of the optical signatures of auroral arcs produced by field line resonances on the night of 31 January 1997. The first example occurs during local evening at about 18:00 MLT (Magnetic Local Time), where CANOPUS meridian scanning photometer data show all the classic features of field line resonances. There are two, near-monochromatic resonances (at approximately 2.0 and 2.5 mHz) and both show latitudinal peaks in amplitude with an approximately 180 degree latitudinal phase shift across the maximum. The second field line resonance event occurs closer to local midnight, between approximately 22:00 and 22:40 MLT. Magnetometer and optical data show that the field line resonance has a very low frequency, near 1.3 mHz. All-sky imager data from CANOPUS show that in this event the field line resonances produce auroral arcs with westward propagation, with arc widths of about 10 km. Electron energies are on the order of 1 keV. This event was also seen in data from the FAST satellite (Lotko et al., 1998), and we compare our observations with those of Lotko et al. (1998). A remarkable feature of this field line resonance is that the latitudinal phase shift was substantially greater than 180 degrees. In our discussion, we present a model of field line resonances which accounts for the dominant physical effects and which is in good agreement with the observations. We emphasize three points. First, the low frequency of the field line resonance in the second event is likely due to the stretched topology of the magnetotail field lines, with the field line resonance on field lines threading the earthward edge of the plasma sheet. Second, the latitudinal phase structure may indicate dispersive effects due to electron trapping or finite ion gyroradius. Third, we show that a nonlocal conductivity model can easily explain the parallel electric fields and the precipitating electron energies seen in the field line resonance.Key words. Magnetospheric physics (electric fields; energetic particles precipitating; current systems)

scholarly journals A Statistical Survey of the 630.0-nm Optical Signature of Periodic Auroral Arcs Resulting From Magnetospheric Field Line Resonances

2018 ◽  
Vol 45 (10) ◽  
pp. 4648-4655 ◽  
Author(s):  
D. Megan Gillies ◽  
David Knudsen ◽  
Robert Rankin ◽  
Stephen Milan ◽  
Eric Donovan
Keyword(s):  
Field Line ◽  
Field Line Resonances ◽  
Optical Signature ◽  
Statistical Survey ◽  
Auroral Arcs ◽  
Magnetospheric Field

Expedition to the South Pole: experience of the laboratory game on polar sciences with primary schools

2018 ◽  
Vol 45 ◽  
pp. 31-38
Author(s):  
Federica La Longa ◽  
Massimo Crescimbene ◽  
Lucilla Alfonsi ◽  
Claudio Cesaroni ◽  
Vincenzo Romano
Keyword(s):  
Primary Schools ◽  
South Pole ◽  
The South

scholarly journals Design and performance of the first IceAct demonstrator at the South Pole

2020 ◽  
Vol 15 (02) ◽  
pp. T02002-T02002
Author(s):  
M.G. Aartsen ◽  
M. Ackermann ◽  
J. Adams ◽  
J.A. Aguilar ◽  
M. Ahlers ◽  
...  
Keyword(s):  
South Pole ◽  
The South ◽  
And Performance

scholarly journals Publisher Correction: Record warming at the South Pole during the past three decades

2021 ◽  
Author(s):  
Kyle R. Clem ◽  
Ryan L. Fogt ◽  
John Turner ◽  
Benjamin R. Lintner ◽  
Gareth J. Marshall ◽  
...  
Keyword(s):  
South Pole ◽  
The South ◽  
The Past
Sign in / Sign up

Export Citation Format

Share Document