{"@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/1363670318211356672.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2001ja000109"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001JA000109"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JA000109"}}],"dc:title":[{"@value":"Hill model of transpolar potential saturation: Comparisons with MHD simulations"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>We present a comparison between a simple but general model of solar wind‐magnetosphere‐ionosphere coupling (the Hill model) and the output of a global magnetospheric MHD code, the Integrated Space Weather Prediction Model (ISM). The Hill model predicts transpolar potential and region 1 currents from environmental conditions specified at both boundaries of the magnetosphere: at the solar wind boundary, electric field strength, ram pressure, and interplanetary magnetic field direction; at the ionospheric boundary, conductance and dipole strength. As its defining feature, the Hill model predicts saturation of the transpolar potential for high electric field intensities in the solar wind, which accords with observations. The model predicts how saturation depends on boundary conditions. We compare the output from ISM runs against these predictions. The agreement is quite good for non‐storm conditions (differences less than 10%) and still good for storm conditions (differences up to 20%). The comparison demonstrates that global MHD codes (like ISM) can also exhibit saturation of transpolar potential for high electric field intensities in the solar wind. We use both models to explore how the strength of solar wind‐magnetosphere‐ionosphere coupling depends on the strength of Earth's magnetic dipole, which varies on short geological timescales. As measured by power into the ionosphere, these models suggest that magnetic storms might be considerably more active for high dipole strengths.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380848661784540161","@type":"Researcher","foaf:name":[{"@value":"G. L. Siscoe"}],"jpcoar:affiliationName":[{"@value":"Center for Space Physics Boston University  Boston Massachusetts USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649221","@type":"Researcher","foaf:name":[{"@value":"G. M. Erickson"}],"jpcoar:affiliationName":[{"@value":"Center for Space Physics Boston University  Boston Massachusetts USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649219","@type":"Researcher","foaf:name":[{"@value":"B. U. Ö. Sonnerup"}],"jpcoar:affiliationName":[{"@value":"Thayer School of Engineering Dartmouth College  Hanover New Hampshire USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649220","@type":"Researcher","foaf:name":[{"@value":"N. C. Maynard"}],"jpcoar:affiliationName":[{"@value":"Mission Research Corporation  Nashua New Hampshire USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649216","@type":"Researcher","foaf:name":[{"@value":"J. A. Schoendorf"}],"jpcoar:affiliationName":[{"@value":"Mission Research Corporation  Nashua New Hampshire USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649222","@type":"Researcher","foaf:name":[{"@value":"K. D. Siebert"}],"jpcoar:affiliationName":[{"@value":"Mission Research Corporation  Nashua New Hampshire USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649218","@type":"Researcher","foaf:name":[{"@value":"D. R. Weimer"}],"jpcoar:affiliationName":[{"@value":"Mission Research Corporation  Nashua New Hampshire USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649217","@type":"Researcher","foaf:name":[{"@value":"W. W. White"}],"jpcoar:affiliationName":[{"@value":"Mission Research Corporation  Nashua New Hampshire USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861292644649223","@type":"Researcher","foaf:name":[{"@value":"G. R. Wilson"}],"jpcoar:affiliationName":[{"@value":"Mission Research Corporation  Nashua New Hampshire USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2002-06","prism:volume":"107","prism:number":"A6","prism:startingPage":"1075"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001JA000109"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JA000109"}],"createdAt":"2002-10-27","modifiedAt":"2023-10-31","relatedProduct":[{"@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/1360004229806321664","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Polar cap potential saturation during the Bastille Day storm event using global MHD simulation"}]},{"@id":"https://cir.nii.ac.jp/crid/1360017280648657280","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"<i>L</i>‐Value and Energy Dependence of 0.1–50 keV O<sup>+</sup>, He<sup>+</sup>, and H<sup>+</sup> Ions for CME and CIR Storms Over the Entire Van Allen Probes Era"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285710398348288","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Statistical Prediction of Dst Index by Solar Wind Data and <inline-formula> <tex-math notation=\"LaTeX\">$t$ </tex-math></inline-formula>-Distributions"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2001ja000109"},{"@type":"CROSSREF","@value":"10.1002/2016ja023851_references_DOI_OvX8NV9fSVGf71FzD93mWLtPV4O"},{"@type":"CROSSREF","@value":"10.1029/2022ja030568_references_DOI_TvucZuZvje2KuUy3PwRMaAaqQLB"},{"@type":"CROSSREF","@value":"10.1109/tps.2015.2485661_references_DOI_OvX8NV9fSVGf71FzD93mWLtPV4O"},{"@type":"CROSSREF","@value":"10.1186/s40645-019-0264-3_references_DOI_OvX8NV9fSVGf71FzD93mWLtPV4O"}]}