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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1029/2019GL085776
|2 doi
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|a eng
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1 |
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|a Malagón-Romero, A
|e verfasserin
|4 aut
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| 245 |
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|a On the Emergence Mechanism of Carrot Sprites
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 29.03.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a ©2019. The Authors.
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|a We investigate the launch of negative upward streamers from sprite glows. This phenomenon is readily observed in high-speed observations of sprites and underlies the classification of sprites into carrot or column types. First, we describe how an attachment instability leads to a sharply defined region in the upper part of the streamer channel. This region has an enhanced electric field, low conductivity and strongly emits in the first positive system of molecular nitrogen. We identify it as the sprite glow. We then show how, in the most common configuration of a carrot sprite, several upward streamers emerge close to the lower boundary of the glow, where negative charge gets trapped and the lateral electric field is high enough. These streamers cut off the current flowing toward the glow and lead to the optical deactivation of the glow above. Finally, we discuss how our results naturally explain angel sprites
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|a Journal Article
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|a angel sprite
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| 650 |
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4 |
|a carrot sprite
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| 650 |
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4 |
|a column sprite
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| 650 |
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4 |
|a upward streamer
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| 700 |
1 |
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|a Teunissen, J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stenbaek-Nielsen, H C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a McHarg, M G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ebert, U
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Luque, A
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Geophysical research letters
|d 1984
|g 47(2020), 1 vom: 16. Jan., Seite e2019GL085776
|w (DE-627)NLM098182501
|x 0094-8276
|7 nnas
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| 773 |
1 |
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|g volume:47
|g year:2020
|g number:1
|g day:16
|g month:01
|g pages:e2019GL085776
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| 856 |
4 |
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|u http://dx.doi.org/10.1029/2019GL085776
|3 Volltext
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