{"@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/1363670320837533440.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2011ja017207"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2011JA017207"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2011JA017207"}}],"dc:title":[{"@value":"A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The Super Dual Auroral Radar Network (SuperDARN) is a chain of HF radars that monitor plasma dynamics in the ionosphere. In recent years, SuperDARN has expanded to midlatitudes in order to provide enhanced coverage during geomagnetically active periods. A new type of backscatter from <jats:italic>F</jats:italic> region plasma irregularities with low Doppler velocity has been frequently observed on the nightside during quiescent conditions. Using three years of data from the Blackstone, VA radar, we have implemented a method for extracting this new type of backscatter from routine observations. We have statistically characterized the occurrence properties of the Sub Auroral Ionospheric Scatter (SAIS) events, including the latitudinal relationships to the equatorward edge of the auroral oval and the ionospheric projection of the plasmapause. We find that the backscatter is confined to local night, occurs on ≈70% of nights, is fixed in geomagnetic latitude, and is equatorward of both the auroral region and the plasmapause boundary. We conclude that SAIS irregularities are observed within a range of latitudes that is conjugate to the inner magnetosphere (plasmasphere).</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380848661784570756","@type":"Researcher","foaf:name":[{"@value":"A. J. Ribeiro"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320837533443","@type":"Researcher","foaf:name":[{"@value":"J. M. Ruohoniemi"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320837533444","@type":"Researcher","foaf:name":[{"@value":"J. B. H. Baker"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320837533441","@type":"Researcher","foaf:name":[{"@value":"L. B. N. Clausen"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320837533442","@type":"Researcher","foaf:name":[{"@value":"R. A. Greenwald"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320837533440","@type":"Researcher","foaf:name":[{"@value":"M. Lester"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2012-02","prism:volume":"117","prism:number":"A2","prism:startingPage":"A02311"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2011JA017207"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2011JA017207"}],"createdAt":"2012-01-04","modifiedAt":"2023-10-30","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360848658223031168","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Global Diagnostics of Ionospheric Absorption During X‐Ray Solar Flares Based on 8‐ to 20‐MHz Noise Measured by Over‐the‐Horizon Radars"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842044692096","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Review of the accomplishments of midlatitude Super Dual Auroral Radar Network (SuperDARN) HF radars"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2011ja017207"},{"@type":"CROSSREF","@value":"10.1029/2018sw002130_references_DOI_8pTEIpy4D22ZgrleWrvmwxsTeRp"},{"@type":"CROSSREF","@value":"10.1186/s40645-019-0270-5_references_DOI_8pTEIpy4D22ZgrleWrvmwxsTeRp"}]}