High-resolution observations of mesospheric layers with the Jicamarca VHF Radar

Simple item page
dc.contributor.authorLehmacher, G. A.
dc.contributor.authorGuo, L.
dc.contributor.authorKudeki, E.
dc.contributor.authorReyes, P. M.
dc.contributor.authorAkgiray, A.
dc.contributor.authorChau Chong Shing, Jorge Luis
dc.date.accessioned2018-07-18T10:56:28Z
dc.date.available2018-07-18T10:56:28Z
dc.date.issued2007
dc.description.abstractWe 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.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationLehmacher, 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. https://doi.org/10.1016/j.asr.2007.05.059es_ES
dc.identifier.doihttps://doi.org/10.1016/j.asr.2007.05.059es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalAdvances in Space Researches_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/1916
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.ispartofurn:issn:0273-1177
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectEquatorial mesospherees_ES
dc.subjectVHF radares_ES
dc.subjectVHF echoeses_ES
dc.subjectKelvin–Helmholtz instabilityes_ES
dc.subjectTurbulencees_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleHigh-resolution observations of mesospheric layers with the Jicamarca VHF Radares_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

Files

License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Artículos Científicos