Filament

From Glossary of Meteorology
Revision as of 17:45, 14 August 2018 by imported>Rbrandt (→‎filament)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



filament

A mass of gas suspended over the chromosphere by magnetic fields and seen as dark ribbons threaded over the solar disk. They consist of higher-density and lower-temperature material than the surrounding corona. A filament that displays motion or changes in shape, location, or absorption characteristics is known as an active dark filament (ADF). A filament that disappears on timescales ranging from minutes to hours is known as disappearing solar filament (DSF). A filament on the limb of the sun seen in emission against the dark sky is called a prominence.

Term edited 14 August 2018.


Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.