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Global distribution...
Global distribution of electrostatic electron cyclotron harmonic waves observed on THEMIS
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Ni, Binbin (author)
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Thorne, Richard (author)
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Liang, Jun (author)
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Angelopoulos, Vassilis (author)
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- Cully, Christopher (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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Li, Wen (author)
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Zhang, Xiaojia (author)
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Hartinger, Michael (author)
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Le Contel, Olivier (author)
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Roux, Alain (author)
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(creator_code:org_t)
- 2011
- 2011
- English.
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In: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 38, s. L17105-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- A global, statistical analysis of electrostatic electron cyclotron harmonic (ECH) waves is performed using THEMIS wave data. Our results confirm the high occurrence of <1 mV/m ECH emissions throughout the outer magnetosphere (L > 5). The strongest (>= 1 mV/m) ECH waves are enhanced during geomagnetically disturbed periods, and are mainly confined close to the magnetic equator (|lambda| < 3 degrees) over the region L <= 10 in the night and dawn MLT sector. ECH wave intensities within 3 degrees <= |lambda| < 6 degrees are generally much weaker but not negligible especially for L < similar to 12 on the midnight side. Furthermore, the occurrence rates and variability of moderately intense (>= 0.1 mV/m) ECH emissions suggest that ECH wave scattering could contribute to diffuse auroral precipitation in the outer (L > 8) magnetosphere where chorus emissions are statistically weak.
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- By the author/editor
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Ni, Binbin
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Thorne, Richard
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Liang, Jun
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Angelopoulos, Va ...
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Cully, Christoph ...
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Li, Wen
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show more...
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Zhang, Xiaojia
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Hartinger, Micha ...
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Le Contel, Olivi ...
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Roux, Alain
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show less...
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Geophysical Rese ...
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Uppsala University