Show Summary Details

Page of

PRINTED FROM OXFORD REFERENCE ( (c) Copyright Oxford University Press, 2013. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single entry from a reference work in OR for personal use.

Subscriber: null; date: 25 February 2017

solar flare

A Dictionary of Weather

Storm Dunlop

solar flare 

A sudden release of energy in the Sun's corona (3) that emits radiation over the whole electromagnetic spectrum. Flares also eject high-speed charged particles (mainly electrons and protons, but also some atomic nuclei), with velocities that may reach as much as 70 per cent of the speed of light, reaching Earth within 15–20 minutes. The radiation and particles interact in various ways with the Earth's geomagnetic field, giving rise to aurorae, geomagnetic storms, sudden enhancement of atmospherics, and sudden ionospheric disturbances.

Was This Useful?