Por |
Kelley, Michael C.; Makela, Jonathan J.; de la Beaujardiére, Odile; Retterer, John
(American Geophysical Union, 2011-06-22)
Equatorial spread F (ESF) was discovered almost a century ago using the first radio wave instrument designed to study the upper atmosphere: the ionosonde. The name came from the appearance of reflections from the normally smooth ionosphere, which were spread over the altitude frequency coordinates ...