Elemental abundances in the upper solar atmosphere.

Details Elemental abundances in the upper solar atmosphere. Elemental abundances in the upper solar atmosphere.

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phys...46..202f&link_type=abstract

Physica Scripta, Vol. 46, No. 3, p. 202 - 220

Physics

354

Scientific paper

Elemental abundances in the solar wind (SW) and in solar energetic particles (SEP) are different from abundances in the photosphere. A reassessment of spectroscopic abundance measurements from high temperature solar plasmas showed that, indeed, on the average, the solar upper atmosphere possesses a composition which is similar in nature to the composition of SW and SEP's. In the last few years a detailed examination of spectra of the upper solar atmosphere has confirmed the above results and proceeded to show that elemental abundances change from region to region by as much as an order of magnitude. An account of these changes, a description of the regions in which the changes occur, and a possible elemental enrichment model is given.

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