2.5.0 spase://IUGONET/Instrument/ISEE/Riometer/GAK/riometer 64MHz Riometer at Gakona, Alaska, US 2017-02-01T00:00:00 60MHz Riometer at Gakona, Alaska, US. The riometer has an 8x8-element dipole antenna array and produces 8x8 independent beams in an area of about 180km x 180km at the D region altitude. This riometer were developed at the Institute for Space-Earth Environmental Research, Nagoya University, in order to investigate the dynamics of the upper atmosphere through nocturnal airglow emissions. Please contact the principal investigator (PI), Prof. K. Shiokawa (shiokawa at isee.nagoya-u.ac.jp) before using the data. spase://IUGONET/Person/Kazuo.Shiokawa PrincipalInvestigator spase://IUGONET/Person/Yoshimasa.Tanaka CoInvestigator spase://IUGONET/Person/ISEE.Metadata.Management.Group MetadataContact Riometer Imaging Riometer Observation at Gakona spase://IUGONET/Observatory/ISEE/Riometer/GAK