{"@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/1361418520032497152.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/jgra.50274"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjgra.50274"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/jgra.50274"}},{"identifier":{"@type":"HANDLE","@value":"2027.42/99015"}}],"dc:title":[{"@value":"Sounding of the plasmasphere by Mid‐continent MAgnetoseismic Chain (McMAC) magnetometers"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>We present a statistical analysis on the plasmaspheric mass density derived from the field line resonance (FLR) observations by the Mid‐continent MAgnetoseismic Chain (McMAC). McMAC consists of nine stations in the United States and Mexico along the 330° magnetic longitude, spanning <jats:italic>L</jats:italic>‐values between 1.5 and 3.4. Using the gradient method and an automated procedure for FLR detection, we studied a full year of McMAC observations between July 2006 and June 2007. We find that the rate of FLR detection can reach as high as 56% around local noon at <jats:italic>L</jats:italic> = 2.7, and the detection rates at higher and lower <jats:italic>L</jats:italic>‐values decline due to the occasional presence of the plasmapause and weaker FLR signals, respectively. At <jats:italic>L</jats:italic>‐values between 1.8 and 3.1, the inferred equatorial plasma mass density follows the <jats:italic>L</jats:italic>‐dependence of <jats:italic>L</jats:italic><jats:sup>−4</jats:sup>. By comparing the mass density with the electron density, we found that the ion mass gradually decreased from 1.7 amu at <jats:italic>L</jats:italic> = 1.8 to 1 amu at <jats:italic>L</jats:italic> = 3.1. The plasma mass density exhibits an annual variation that maximizes in January, and at <jats:italic>L</jats:italic> = 2.4 the ratio between January and July densities is 1.6. Our observations also show a local time dependence of plasmaspheric mass density that stays steady in the morning and rises postnoon, a phenomenon that may be attributed to the equatorial ionization anomaly as a part of the plasma neutral coupling at low latitude.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380848661782874636","@type":"Researcher","foaf:name":[{"@value":"P. J. Chi"}],"jpcoar:affiliationName":[{"@value":"Institute of Geophysics and Planetary Physics and Department of Earth and Space Sciences University of California  Los Angeles California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497280","@type":"Researcher","foaf:name":[{"@value":"M. J. Engebretson"}],"jpcoar:affiliationName":[{"@value":"Department of Physics Augsburg College  Minneapolis Minnesota USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497282","@type":"Researcher","foaf:name":[{"@value":"M. B. Moldwin"}],"jpcoar:affiliationName":[{"@value":"Department of Atmospheric, Oceanic and Space Sciences University of Michigan  Ann Arbor Michigan USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497288","@type":"Researcher","foaf:name":[{"@value":"C. T. Russell"}],"jpcoar:affiliationName":[{"@value":"Institute of Geophysics and Planetary Physics and Department of Earth and Space Sciences University of California  Los Angeles California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497284","@type":"Researcher","foaf:name":[{"@value":"I. R. Mann"}],"jpcoar:affiliationName":[{"@value":"Department of Physics University of Alberta  Edmonton Alberta Canada"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497287","@type":"Researcher","foaf:name":[{"@value":"M. R. Hairston"}],"jpcoar:affiliationName":[{"@value":"William B. Hanson Center for Space Sciences University of Texas Dallas  Richardson Texas USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497289","@type":"Researcher","foaf:name":[{"@value":"M. Reno"}],"jpcoar:affiliationName":[{"@value":"Austin Mission Consulting  Austin Texas USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497285","@type":"Researcher","foaf:name":[{"@value":"J. Goldstein"}],"jpcoar:affiliationName":[{"@value":"Department of Space Sciences Southwest Research Institute  San Antonio Texas USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497152","@type":"Researcher","foaf:name":[{"@value":"L. I. Winkler"}],"jpcoar:affiliationName":[{"@value":"Department of Physics and Astronomy Minnesota State University Moorhead  Moorhead Minnesota USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016867817751553","@type":"Researcher","foaf:name":[{"@value":"J. L. Cruz‐Abeyro"}],"jpcoar:affiliationName":[{"@value":"Centro de Geociencias Universidad Nacional Autónoma de México  Juriquilla Querétaro Mexico"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016867817751552","@type":"Researcher","foaf:name":[{"@value":"D.‐H. Lee"}],"jpcoar:affiliationName":[{"@value":"School of Space Research Kyung Hee University  Yongin Gyeonggi Korea"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497281","@type":"Researcher","foaf:name":[{"@value":"K. Yumoto"}],"jpcoar:affiliationName":[{"@value":"International Center for Space Weather Science and Education Kyushu University  Fukuoka Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497291","@type":"Researcher","foaf:name":[{"@value":"R. Dalrymple"}],"jpcoar:affiliationName":[{"@value":"Minnesota West Community and Technical College  Worthington Minnesota USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497153","@type":"Researcher","foaf:name":[{"@value":"B. Chen"}],"jpcoar:affiliationName":[{"@value":"Department of Computer and Electronics Engineering University of Nebraska‐Lincoln  Omaha Nebraska USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520032497283","@type":"Researcher","foaf:name":[{"@value":"J. P. Gibson"}],"jpcoar:affiliationName":[{"@value":"Kessler Atmospheric and Ecological Field Station University of Oklahoma  Norman Oklahoma USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"21699380"},{"@type":"EISSN","@value":"21699402"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2013-06","prism:volume":"118","prism:number":"6","prism:startingPage":"3077","prism:endingPage":"3086"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjgra.50274"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/jgra.50274"}],"createdAt":"2013-04-23","modifiedAt":"2023-10-10","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Plasmaspheric%20Density","dc:title":"Plasmaspheric Density"},{"@id":"https://cir.nii.ac.jp/all?q=Science","dc:title":"Science"},{"@id":"https://cir.nii.ac.jp/all?q=Field%20Line%20Resonance","dc:title":"Field Line Resonance"},{"@id":"https://cir.nii.ac.jp/all?q=Astronomy%20and%20Astrophysics","dc:title":"Astronomy and Astrophysics"},{"@id":"https://cir.nii.ac.jp/all?q=ULF%20Waves","dc:title":"ULF Waves"},{"@id":"https://cir.nii.ac.jp/all?q=Ground%E2%80%90Based%20Magnetometers","dc:title":"Ground‐Based Magnetometers"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360848654738328960","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Application of a global magnetospheric‐ionospheric current model for dayside and terminator Pi2 pulsations"}]},{"@id":"https://cir.nii.ac.jp/crid/2050870367050224896","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Statistical study on propagation characteristics of Omega signals (VLF) in magnetosphere detected by the Akebono satellite"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1002/jgra.50274"},{"@type":"OPENAIRE","@value":"doi_dedup___::3aa9fd8acb0349ff96ae9bf57f91172e"},{"@type":"CROSSREF","@value":"10.1002/2017ja024246_references_DOI_7pgcDsddPjaTnFkL9ImgVkbA2fv"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0684-5_references_DOI_7pgcDsddPjaTnFkL9ImgVkbA2fv"}]}