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Daytime equatorial electrojet plasma irregularities were investigated using five distinct radar diagnostics at Jica-marca including range-time-intensity (RTI) mapping, Fara-day rotation, radar imaging, oblique scattering, and multiple-frequency scattering using the new AMISR prototype UHF radar. Data suggest the existence of plasma density striations(More)
BACKGROUND Yellow fever (YF) is an acute viral hemorrhagic disease transmitted by Aedes mosquitoes. The causative agent, the yellow fever virus (YFV), is found in tropical and subtropical areas of South America and Africa. Although a vaccine is available since the 1930s, YF still causes thousands of deaths and several outbreaks have recently occurred in(More)
Milan et al. (2004) have recently reported on close-range E region decameter size echoes that seem to be relatively weak, have apparently unusually large aspect angles , and possess Doppler shifts that are slow and are clearly consistent with the ion drift of the medium as opposed to, say, its electron drift or its ion-acoustic speed. We argue that these(More)
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