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A distinctive type of ascending prominence - 'Fountain'Cinematographic observations of solar prominences made at Mauna Loa, Hawaii, during the past few years suggest that there is a well-defined subclass of ascending prominences characterized by closed-system transference of chromospheric material along an arch or loop (up one leg and down the other). While this occurs, the entire prominence envelope steadily rises upward and expands through the corona. These prominences are denoted as 'fountains'. Several examples are described. Fountains appear to be well contained by coronal magnetic fields. Their total kinetic energy is of the order of 10 to the 30th power erg, but dissipation is typically quite slow (over time periods of 100 min or so), so that the correlative disturbances (radio bursts, coronal transients, chromospheric brightenings) are generally not spectacular or nonexistent.
Document ID
19760036025
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Tandberg-Hanssen, E.
(NASA Marshall Space Flight Center Space Sciences Laboratory, Huntsville, Ala., United States)
Hansen, R. T.
(High Altitude Observatory Boulder, Colo., United States)
Riddle, A. C.
(Colorado, University Boulder, Colo., United States)
Date Acquired
August 8, 2013
Publication Date
October 1, 1975
Publication Information
Publication: Solar Physics
Volume: 44
Subject Category
Solar Physics
Accession Number
76A18991
Distribution Limits
Public
Copyright
Other

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