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Swartz & Woodman 1998
Swartz, W.E. and Woodman, R.F. (1998). Same night observations of spread-F by the Jicamarca Radio Observatory in Peru and CUPRI in Alcântara, Brazil. Geophysical Research Letters 25: doi: 10.1029/97GL03484. issn: 0094-8276.

50-MHz echoes from equatorial spread-F were observed on several nights by both the Jicamarca Radio Observatory (JRO) in Peru and the Cornell University Portable Radar Interferometer (CUPRI) in Alca⁁ntara, Brazil. Although little detailed correlation is expected between sites separated by such large distances, the night of October 17, 1994 shows some remarkable similarities between Peru and Brazil. On this night spread-F commenced at both Jicamarca and Alca⁁ntara as thin bottomside layers situated near 320 km altitude at nearly the same local times. Later, major plumes erupted that reached to over 1000 km altitude at both sites. Since plumes normally drift west to east, these are obviously not the same structures but the similarities indicate that conditions for spawning them must have been coincidentally very similar on this night. The next two nights which produced plumes over Brazil, but only bottomside layers over Peru, emphasize that local conditions on the same night can be very different at the two locations. The importance of having a sufficiently wide beam for exploring spread-F over a large altitude range at the Alca⁁ntara site is also explored. ¿ 1998 American Geophysical Union

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Keywords
Ionosphere, Plasma waves and instabilities, Radio Science, Waves in plasma, Ionosphere, Equatorial ionosphere, Space Plasma Physics
Journal
Geophysical Research Letters
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American Geophysical Union
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