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Discussion

Match each transient luminous event with where it occurs.
List I
A. Sprite
B. Blue jet
C. Elve
D. Gigantic jet
List II
1. a rapidly expanding ring in the lower ionosphere
2. mesosphere above a thunderstorm
3. from cloud top all the way to the ionosphere
4. upward from the cloud top into the stratosphere

  • A.A-2, B-4, C-1, D-3
  • B.A-4, B-2, C-1, D-3
  • C.A-2, B-4, C-3, D-1
  • D.A-3, B-1, C-4, D-2

Answer: A

Correct answer: A-2, B-4, C-1, D-3

The four transient luminous events occupy different altitudes. A sprite is a red discharge in the mesosphere, 50 to 90 km up, triggered by a large charge transfer below. A blue jet shoots upward from the cloud top into the stratosphere. An elve is a rapidly expanding ring in the lower ionosphere, produced by the electromagnetic pulse of the flash. A gigantic jet bridges the whole gap from cloud top to ionosphere.

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