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The great solar eruption of May 24, 1979 |
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Eos, Transactions American Geophysical Union,
Volume 62,
Issue 15,
1981,
Page 153-153
Neil R. Sheeley,
D. J. Michels,
R. A. Howard,
M. J. Koomen,
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PDF (228KB)
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摘要:
The sequence of images on today's cover of Eos shows the most spectacular solar mass ejection observed to date with the Naval Research Laboratory's Earth‐orbiting coronagraph. Preceded by a loop‐shaped coronal structure, an enormous eruptive prominence is visible both expanding and moving outward across the coronagraph's 2.5–10.0‐RSannular field of view. As it left the field, the prominence dwarfed the sun itself, whose size and location are indicated by the small white disk in the lower‐right photograph.The prominence can be recognized by its characteristic structural detail and by the fact that its relatively unpolarized radiation is not blocked by the polarization‐analyzing rings that are faintly visible at 5 RSand 8 RSagainst the coronal background. The Ha 6563α line of neutral hydrogen is the principal prominence emission line in the coronagraph's 4000–7000‐A spectral bandpass. On the other hand, the strongly polarized coronal radiation is continuum emission originating at the occulted solar disk and Thomson scattered by coronal electrons in the 2.5–10.0‐RSfield of view. Both the prominence and the expanding coronal ‘loop’ have been enhanced in our cover photograph by subtracting a preevent
ISSN:0002-8606
DOI:10.1029/EO062i015p00153-01
年代:1981
数据来源: WILEY
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2. |
IIASA Energy Study unveiled |
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Eos, Transactions American Geophysical Union,
Volume 62,
Issue 15,
1981,
Page 154-154
Barbara T. Richman,
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PDF (1114KB)
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摘要:
Meeting the energy needs of the world in 2030, when the projected population will be 8 billion, can be done, but not without international cooperation, a mix of energy technologies, and an understanding of the dependence of resources and use. That's the optimistic conclusion of the 7‐year golbal energy study by the International Insitute for Applied Systems Analysis (IIASA
ISSN:0002-8606
DOI:10.1029/EO062i015p00154-01
年代:1981
数据来源: WILEY
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