Mostrar el registro sencillo del ítem Hickey, Dustin A. Martinis, Carlos R. Rodrigues, Fabiano S. Varney, Roger H. Milla, Marco Nicolls, Michael J. Strømme, Anja Arratia, Juan F. 2018-06-28T15:21:02Z 2018-06-28T15:21:02Z 2015-11-20
dc.identifier.citation Hickey, D. A., Martinis, C. R., Rodrigues, F. S., Varney, R. H., Milla, M., Nicolls, M. J., ... Arratia, J. F. (2015). Concurrent observations at the magnetic equator of small-scale irregularities and large-scale depletions associated with equatorial spread F.==$Journal of Geophysical Research: Space physics, 120$==(12), 10,883-10,896. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract In 2014 an all-sky imager (ASI) and an Advanced Modular Incoherent Scatter Radar consisting of 14 panels (AMISR-14) system were installed at the Jicamarca Radio Observatory. The ASI measures airglow depletions associated with large-scale equatorial spread F irregularities (10's-100's km), while AMISR-14 detects small-scale irregularities (0.34 m). This study presents simultaneous observations of equatorial spread F (ESF) irregularities at 10-100 km scales using the all sky-imager, at 3 m scales using the JULIA (Jicamarca Unattended Long-term Investigations of the Ionosphere and Atmosphere) radar, and at 0.34 m scales using the AMISR-14 radar. We compare data from the three instruments on the night of 20-21 August, 2014 by locating the radar scattering volume in the optical images. During this night no topside plumes were observed, and we only compare with bottomside ESF. AMISR-14 had five beams perpendicular to the magnetic field covering ~200 km in the east-west direction at 250 km altitude. Comparing the radar data with zenith ASI measurements, we found that most of the echoes occur on the western wall of the depletions with fewer echoes observed the eastern wall and center, contrary to previous comparisons of topside plumes that showed most of the echoes in the center of depleted regions. We attribute these differences to the occurrence of irregularities produced at sub-meter scales by the lower-hybrid-drift instability. Comparisons of the ASI observations with JULIA images show similar results to those found in the AMISR-14 and ASI comparison. 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/restrictedAccess es_ES
dc.subject Ionosphere es_ES
dc.subject Irregularities es_ES
dc.subject ESF es_ES
dc.subject Radar es_ES
dc.subject Imaging es_ES
dc.subject Depletion es_ES
dc.title Concurrent observations at the magnetic equator of small-scale irregularities and large-scale depletions associated with equatorial spread F es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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