Rodrigues, F. S.Nicolls, M. J.Milla, MarcoSmith, J. M.Varney, R. H.Strømme, A.Martinis, C.Arratia, J. F.2018-07-242018-07-242015-06-11Rodrigues, F. S., Nicolls, M. J., Milla, M., Smith, J. M., Varney, R. H., Strømme, A., ... Arratia, J. F. (2015). AMISR-14: Observations of equatorial spread F.==$Geophysical Research Letters, 42$==(13), 5100-5108. https://doi.org/10.1002/2015GL064574index-oti2018http://hdl.handle.net/20.500.12816/2056A new, 14-panel Advanced Modular Incoherent Scatter Radar (AMISR-14) system was recently deployed at the Jicamarca Radio Observatory. We present results of the first coherent backscatter radar observations of equatorial spread F (ESF) irregularities made with the system. Colocation with the 50 MHz Jicamarca Unattended Long-term studies of the Ionosphere and Atmosphere (JULIA) radar allowed unique simultaneous observations of meter and submeter irregularities. Observations from both systems produced similar Range-Time-Intensity maps during bottom-type and bottomside ESF events. We were also able to use the electronic beam steering capability of AMISR-14 to “image” scattering structures in the magnetic equatorial plane and track their appearance, evolution, and decay with a much larger field of view than previously possible at Jicamarca. The results suggest zonal variations in the instability conditions leading to irregularities and demonstrate the dynamic behavior of F region scattering structures as they evolve and drift across the radar beams.application/pdfenginfo:eu-repo/semantics/restrictedAccessIonosphereIrregularitiesSpread FScatterRadarinfo:eu-repo/semantics/articlehttp://purl.org/pe-repo/ocde/ford#1.05.01Geophysical Research Lettershttps://doi.org/10.1002/2015GL064574