Mostrar el registro sencillo del ítem Lehmacher, G. A. Guo, L. Kudeki, E. Reyes, P. M. Akgiray, A. Chau Chong Shing, Jorge Luis 2018-07-18T10:56:28Z 2018-07-18T10:56:28Z 2007
dc.identifier.citation Lehmacher, G. A., Guo, L., Kudeki, E., Reyes, P. M., Akgiray, A., & Chau, J. L. (2007). High-resolution observations of mesospheric layers with the Jicamarca VHF Radar.==$Advances in Space Research, 40$==(6), 734-743. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract We report new results from the 50-MHz Jicamarca radar in Peru (12°S, 77°W), which is able to observe backscatter from the daytime mesosphere on any given day. Since 2005, the radar has been operated in a high-power MST-ISR mode for 3-day runs four times per year to study the seasonal variation of mesospheric echoes. Doppler spectra are obtained with 1 min and 150-m nominal resolution yielding power, horizontal and vertical winds, and spectral width. The rich echo structures contain braids and billows suggestive of Kelvin–Helmholtz instability (KHI). We present three cases; (1) a short sequence of billows growing in height and becoming unstable; (2) a long train of billows showing high levels of turbulence at two different locations; and (3) a series of billows passing only slowly through the field of view. In all cases, the layers were associated with strong wind shears, mature billows were 1–1.5 km tall, and separation of KH phase fronts was 8–10 km. We compare our observations with OH imager observation and numerical simulations. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof urn:issn:0273-1177
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Equatorial mesosphere es_ES
dc.subject VHF radar es_ES
dc.subject VHF echoes es_ES
dc.subject Kelvin–Helmholtz instability es_ES
dc.subject Turbulence es_ES
dc.title High-resolution observations of mesospheric layers with the Jicamarca VHF Radar es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.identifier.journal Advances in Space Research es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




Mostrar el registro sencillo del ítem