{"@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/1362262944005919488.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/ja091ia12p13613"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJA091iA12p13613"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JA091iA12p13613"}},{"identifier":{"@type":"NAID","@value":"30034710043"}}],"dc:title":[{"@value":"Geocoronal imaging with Dynamics Explorer"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The ultraviolet photometer of the University of Iowa spin scan auroral imaging instrumentation on board the Dynamics Explorer 1 satellite has returned numerous images of the geocorona from altitudes of 570 km to 23,300 km. The geocoronal observations from 1981 through 1985 are compared to a spherically symmetric isothermal Chamberlain model of the exospheric density distribution. Model parameters are varied to obtain an acceptable fit. The radiative transfer equation is solved numerically. Stellar intensities are monitored for an independent calibration of the DE 1 instrument in flight. The solar Ly α flux is estimated through concurrent measurements made by the Solar Mesosphere Explorer satellite, supplemented by published values of ground‐observable solar indices. Extraterrestrial background intensities are adopted from earlier OGO 5 high‐altitude measurements. The optimum fit for 1981 imaging data utilizes a Chamberlain model of temperature <jats:italic>T</jats:italic> = 1050 K and exobase density <jats:italic>n<jats:sub>c</jats:sub></jats:italic> = 44,000 atoms cm<jats:sup>−3</jats:sup>. The exobase is taken as <jats:italic>r<jats:sub>c</jats:sub></jats:italic> = 1.08 <jats:italic>R<jats:sub>E</jats:sub></jats:italic> (500 km altitude), and a critical radius for satellite atoms of <jats:italic>r<jats:sub>cs</jats:sub></jats:italic> = 3.0 <jats:italic>r<jats:sub>c</jats:sub></jats:italic> is adopted. This model continues to compare well with the DE 1 measurements over the entire 4‐year period studied, even though the exobase conditions are expected to have changed appreciably during this interval of declining solar activity. It is concluded that the apparently constant hydrogen density and scale height observed by DE 1 are not directly indicative of the exobase conditions through the classical Chamberlain model but rather show the effects of charge exchange with thermal ions in the plasmasphere. A readily observable departure from spherical symmetry is the geotail, an enhancement in the atomic hydrogen column densities in the antisunward direction.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1583105976237979392","@type":"Researcher","foaf:name":[{"@value":"R. L. Rairden"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262944005919489","@type":"Researcher","foaf:name":[{"@value":"L. A. Frank"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262944005919490","@type":"Researcher","foaf:name":[{"@value":"J. D. Craven"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1986-12","prism:volume":"91","prism:number":"A12","prism:startingPage":"13613","prism:endingPage":"13630"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJA091iA12p13613"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JA091iA12p13613"}],"createdAt":"2008-02-06","modifiedAt":"2023-09-22","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050282677278592512","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Magnetic field depression at the Earth's surface during energetic neutral atom emission fade-out in the inner magnetosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1050282813186026624","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Simulation study of near-Earth space disturbances: 1. magnetic storms"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004233286919680","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Evolution of ring current ion energy spectra during the storm recovery phase: Implication for dominant ion loss processes"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004239676151552","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Low-latitude Aurorae during the Extreme Space Weather Events in 1859"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021391857264000","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The RAM-SCB model and its applications to advance space weather forecasting"}]},{"@id":"https://cir.nii.ac.jp/crid/1360286995853222272","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Earth as an exoplanet mission concept for a lunar orbiting cubesat"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567179761452800","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Ecliptic North‐South Symmetry of Hydrogen Geocorona"}]},{"@id":"https://cir.nii.ac.jp/crid/1360580230583859712","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The Earth’s Outer Exospheric Density Distributions Derived From PROCYON/LAICA UV Observations"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848655764317824","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Dynamic Inner Magnetosphere: A Tutorial and Recent Advances"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848656365423616","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A Review of General Physical and Chemical Processes Related to Plasma Sources and Losses for Solar System Magnetospheres"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204599172224","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Imaging Observation of the Earth's Plasmasphere and Ionosphere by EUVI of ISS-IMAP on the International Space Station"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206510457472","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Coulomb lifetime of the ring current ions with time varying plasmasphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1521980705212189312","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@value":"Telescope of extreme ultraviolet (TEX) onboard SELENE: science from the Moon"},{"@language":"ja-Kana","@value":"Telescope of extreme ultraviolet TEX onboard SELENE science from the Moon"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/ja091ia12p13613"},{"@type":"CIA","@value":"30034710043"},{"@type":"CROSSREF","@value":"10.1029/2010ja015628_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.3847/1538-4357/aae47c_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1016/j.asr.2022.08.077_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1117/1.jatis.5.4.044004_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1002/2017gl075915_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1029/2010ja015799_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1541/ieejfms.131.1006_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1029/2021ja030211_references_DOI_VmoQB1iV4TrHWF58rX0CSAM6WQf"},{"@type":"CROSSREF","@value":"10.1186/bf03352123_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1007/978-94-007-0501-2_9_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1007/s11214-015-0170-y_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"},{"@type":"CROSSREF","@value":"10.1186/s40645-019-0264-3_references_DOI_TAgOagXPb0OGcRgSJ0mjqNta5qo"}]}