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dc.contributor.author Reyes, Pablo M.
dc.contributor.author Kudeki, Erhan
dc.contributor.author Lehmacher, Gerald A.
dc.contributor.author Chau, Jorge L.
dc.contributor.author Milla, Marco
dc.coverage.spatial Jicamarca
dc.date.accessioned 2021-02-16T12:41:34Z
dc.date.available 2021-02-16T12:41:34Z
dc.date.issued 2020-08
dc.identifier.citation Reyes, P. M., Kudeki, E., Lehmacher, G. A., Chau, J. L., & Milla, M. A. (2020). VIPIR and 50 MHz radar studies of gravity wave signatures in 150‐km echoes observed at Jicamarca.==$Journal of Geophysical Research: Space Physics, 125$==(8). https://doi.org/10.1029/2019JA027535 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/4918
dc.description.abstract Range‐time‐intensity (RTI) plots of 50 MHz radar backscatter detected at Jicamarca from the 150‐km region of the equatorial ionosphere exhibit necklace‐shaped multilayered structures first reported by Kudeki and Fawcett (1993, https://doi.org/10.1029/93GL01256). The backscatter layers also exhibit quasi‐periodic intensity fluctuations with periods of about 5–15 min and are separated from adjacent layers by thin and undulating regions of no detectible power returns. A study of the fluctuating backscatter layers and undulating gap regions will be presented using VIPIR ionosonde data taken at the Jicamarca Radio Observatory simultaneously with high‐resolution 50‐MHz radar backscatter data. VIPIR virtual reflection height variations in time are noted to match the RTI gap‐region undulations very closely at selected VIPIR frequencies (or, equivalently, electron densities at reflection heights). This matching enables assigning “true heights” to VIPIR virtual height contour maps, and a joint study of the contour maps with the 50‐MHz radar RTI maps strongly suggests that correlated fluctuations and undulations observed in VIPIR and 50‐MHz radar data are indicative of gravity wave‐induced variations in the 150‐km region ionosphere. Accordingly, a complete explanation of the 150‐km echo phenomenon will need to include gravity wave coupling and forcing effects in the enhancement and suppression processes that can account for the observed fluctuations and gap‐region features of necklace‐shaped 150‐km echo maps. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:2169-9380
dc.rights info:eu-repo/semantics/closedAccess es_ES
dc.subject Equatorial ionosphere es_ES
dc.subject 150‐km echoes es_ES
dc.subject Radar scattering es_ES
dc.subject Ionospheric sounding es_ES
dc.subject Gravity waves es_ES
dc.title VIPIR and 50 MHz radar studies of gravity wave signatures in 150‐km echoes observed at Jicamarca es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1029/2019JA027535 es_ES

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