{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360004232245199104.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.jastp.2011.12.002"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S1364682611003191?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S1364682611003191?httpAccept=text/plain"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Wave-4 structure of the neutral density in the thermosphere and its relation to atmospheric tides"}],"description":[{"notation":[{"@value":"Abstract   The generation mechanism for the 4-peak longitudinal structure of the neutral density in the upper thermosphere is examined using an atmosphere–ionosphere coupled model. Our result indicates that the wave-4 structure of the neutral density in the upper thermosphere is caused by the upward propagation of the eastward diurnal tide with zonal wavenumber 3 (DE3) and the eastward semidiurnal tide with zonal wavenumber 2 (SE2) from the troposphere. The wave-4 structure of the neutral density in the equatorial region is mainly generated by the DE3, while the SE2 is important for the generation of the wave-4 structure in middle latitudes. Our simulation demonstrates that the wave-4 structure is evident at the height range from 150 km to 500 km. Furthermore, we examine the day-to-day variation of the wave-4 amplitude of the neutral density at 400 km height and its relation with the SE2 and DE3 amplitudes at various heights."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420001326218000512","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"20243884"},{"@type":"NRID","@value":"1000020243884"},{"@type":"NRID","@value":"9000271160487"},{"@type":"NRID","@value":"9000018698572"},{"@type":"NRID","@value":"9000363496327"},{"@type":"NRID","@value":"9000264263712"},{"@type":"NRID","@value":"9000018698532"},{"@type":"NRID","@value":"9000392819637"},{"@type":"NRID","@value":"9000339140621"},{"@type":"NRID","@value":"9000408815241"},{"@type":"NRID","@value":"9000408815248"},{"@type":"NRID","@value":"9000363485658"},{"@type":"NRID","@value":"9000309185169"},{"@type":"NRID","@value":"9000267764561"},{"@type":"NRID","@value":"9000254739614"},{"@type":"NRID","@value":"9000332221973"},{"@type":"NRID","@value":"9000018698571"},{"@type":"NRID","@value":"9000000143832"},{"@type":"NRID","@value":"9000392816554"},{"@type":"NRID","@value":"9000107370709"},{"@type":"NRID","@value":"9000309563673"},{"@type":"NRID","@value":"9000333079721"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0172414"}],"foaf:name":[{"@value":"Yasunobu Miyoshi"}]},{"@id":"https://cir.nii.ac.jp/crid/1420845751164149120","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"60466240"},{"@type":"NRID","@value":"1000060466240"},{"@type":"NRID","@value":"9000317129718"},{"@type":"NRID","@value":"9000398261212"},{"@type":"NRID","@value":"9000006923975"},{"@type":"NRID","@value":"9000016984559"},{"@type":"NRID","@value":"9000237753204"},{"@type":"NRID","@value":"9000288831599"}],"foaf:name":[{"@value":"Hidekatsu 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Fujiwara"}]},{"@id":"https://cir.nii.ac.jp/crid/1420282801203713280","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"00262915"},{"@type":"NRID","@value":"1000000262915"},{"@type":"NRID","@value":"9000002736468"},{"@type":"NRID","@value":"9000014612778"},{"@type":"NRID","@value":"9000237753205"},{"@type":"NRID","@value":"9000322102366"},{"@type":"NRID","@value":"9000018331295"},{"@type":"NRID","@value":"9000240188035"},{"@type":"NRID","@value":"9000010528632"},{"@type":"NRID","@value":"9000237753211"},{"@type":"NRID","@value":"9000237754198"},{"@type":"NRID","@value":"9000018860263"},{"@type":"NRID","@value":"9000260198429"}],"foaf:name":[{"@value":"Hiroyuki 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