{"@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/1360004229808235392.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/2017ja024342"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2017JA024342"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/2017JA024342"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/2017JA024342"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2017JA024342"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Characteristics of Seasonal Variation and Solar Activity Dependence of the Geomagnetic Solar Quiet Daily Variation"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>Characteristics of seasonal variation and solar activity dependence of the <jats:italic>X</jats:italic> and <jats:italic>Y</jats:italic> components of the geomagnetic solar quiet (Sq) daily variation at Memambetsu in midlatitudes and Guam near the equator have been investigated using long‐term geomagnetic field data with 1 h time resolution from 1957 to 2016. The monthly mean Sq variation in the <jats:italic>X</jats:italic> and <jats:italic>Y</jats:italic> components (Sq‐<jats:italic>X</jats:italic> and Sq‐<jats:italic>Y</jats:italic>) shows a clear seasonal variation and solar activity dependence. The amplitude of seasonal variation increases significantly during high solar activities and is proportional to the solar <jats:italic>F</jats:italic><jats:sub>10.7</jats:sub> index. The pattern of the seasonal variation is quite different between Sq‐<jats:italic>X</jats:italic> and Sq‐<jats:italic>Y</jats:italic>. The result of the correlation analysis between the solar <jats:italic>F</jats:italic><jats:sub>10.7</jats:sub> index and the Sq‐<jats:italic>X</jats:italic> and Sq‐<jats:italic>Y</jats:italic> shows an almost linear relationship, but the slope of the linear fitted line varies as a function of local time and month. This implies that the sensitivity of Sq‐<jats:italic>X</jats:italic> and Sq‐<jats:italic>Y</jats:italic> to the solar activity is different for different local times and seasons. The pattern of the local time and seasonal variations of Sq‐<jats:italic>Y</jats:italic> at Guam shows good agreement with that of a magnetic field produced by interhemispheric field‐aligned currents (FACs), which flow from the summer to winter hemispheres in the dawn and dusk sectors and from the winter to summer hemispheres in the prenoon to afternoon sectors. The direction of the interhemispheric FAC in the dusk sector is opposite to the concept of Fukushima's model.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420564276184219392","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"30555678"},{"@type":"NRID","@value":"1000030555678"},{"@type":"NRID","@value":"9000019068406"},{"@type":"NRID","@value":"9000331467338"},{"@type":"NRID","@value":"9000356514764"},{"@type":"NRID","@value":"9000356514759"},{"@type":"NRID","@value":"9000271445486"},{"@type":"NRID","@value":"9000277863661"},{"@type":"NRID","@value":"9000279889927"},{"@type":"NRID","@value":"9000323844322"},{"@type":"NRID","@value":"9000006621259"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/7000009651"}],"foaf:name":[{"@value":"Atsuki Shinbori"}],"jpcoar:affiliationName":[{"@value":"Institute for Space‐Earth Environmental Research Nagoya University  Nagoya Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004229808235393","@type":"Researcher","foaf:name":[{"@value":"Yukinobu Koyama"}],"jpcoar:affiliationName":[{"@value":"National Institute of Technology Oita College  Oita Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004229808235395","@type":"Researcher","foaf:name":[{"@value":"Masahito Nosé"}],"jpcoar:affiliationName":[{"@value":"World Data Center for Geomagnetism Kyoto University  Kyoto Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004229808235392","@type":"Researcher","foaf:name":[{"@value":"Tomoaki Hori"}],"jpcoar:affiliationName":[{"@value":"Institute for Space‐Earth Environmental Research Nagoya University  Nagoya Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004229808235394","@type":"Researcher","foaf:name":[{"@value":"Yuichi Otsuka"}],"jpcoar:affiliationName":[{"@value":"Institute for Space‐Earth Environmental Research Nagoya University  Nagoya Japan"}]}],"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":"2017-10","prism:volume":"122","prism:number":"10","prism:startingPage":"10796"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2017JA024342"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/2017JA024342"},{"@id":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/2017JA024342"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2017JA024342"}],"createdAt":"2017-10-12","modifiedAt":"2023-09-02","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000781899067648","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"16H04057"},{"@type":"JGN","@value":"JP16H04057"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16H04057/"}],"notation":[{"@language":"ja","@value":"衛星多点観測と計算機シミュレーションによる内部磁気圏のイオン組成変化要因の探究"},{"@language":"en","@value":"Investigation of ion composition change in the inner magnetosphere based on multi-satellite observations and numerical simulations"}]},{"@id":"https://cir.nii.ac.jp/crid/1040000781974743552","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"17K18804"},{"@type":"JGN","@value":"JP17K18804"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17K18804/"}],"notation":[{"@language":"ja","@value":"磁気インピーダンスセンサーによる地磁気観測実験と稠密観測網展開可能性の探索"},{"@language":"en","@value":"Experiment of geomagnetic field observation by magneto-impedance sensor and study for possibility of deployment of dense magnetometer network"}]},{"@id":"https://cir.nii.ac.jp/crid/1040000782297899520","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"26400478"},{"@type":"JGN","@value":"JP26400478"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26400478/"}],"notation":[{"@language":"ja","@value":"地磁気擾乱時における電離圏電場分布の変動と電離圏擾乱ダイナモとの関係"},{"@language":"en","@value":"Temporal and spatial variations of ionospheric electric fields during geomagnetic storms and the relation to ionospheric disturbance dynamo"}]},{"@id":"https://cir.nii.ac.jp/crid/1040000782493633024","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"16H06286"},{"@type":"JGN","@value":"JP16H06286"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16H06286/"}],"notation":[{"@language":"ja","@value":"地上多点ネットワーク観測による内部磁気圏の粒子・波動の変動メカニズムの研究"},{"@language":"en","@value":"Study of dynamical variation of particles and waves in the inner magnetosphere using ground-based network observations"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282256810520448","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"15H05815"},{"@type":"JGN","@value":"JP15H05815"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-15H05815/"}],"notation":[{"@language":"ja","@value":"地球電磁気圏擾乱現象の発生機構の解明と予測"},{"@language":"en","@value":"Understanding and prediction of geospace dynamics"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001335797023232","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"An Interactive Data Language software package to calculate ionospheric conductivity by using numerical models"}]},{"@id":"https://cir.nii.ac.jp/crid/1050001335802470528","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Long-term variation in the upper atmosphere as seen in the geomagnetic solar quiet daily variation"}]},{"@id":"https://cir.nii.ac.jp/crid/1050295027686608000","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seasonal variation of inter-hemispheric field-aligned currents deduced from time-series analysis of the equatorial geomagnetic field data during solar cycle 23-24"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011145200036480","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Ground magnetic effects of the equatorial electrojet simulated by the TIE‐GCM driven by TIMED satellite data"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011146238666240","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Correction to “Quiet ionospheric currents of the northern hemisphere derived from geomagnetic field records”"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011146457647616","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Solstitial S-currents through the magnetosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292619516291200","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Trends in the solar quiet geomagnetic field variation linked to the Earth's magnetic field secular variation and increasing concentrations of greenhouse gases"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574095907992832","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"On the relation between the diurnal range of magnet declination horizontal force and the period of solar spot frequency"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855568460680320","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Field-aligned current induced by asymmetric dynamo action in the ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044131654400","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Annual and semiannual changes of the quiet daily variations (<i>Sq</i>) in the geomagnetic field at North American locations"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044320050176","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Seasonal and local time dependences of the interhemispheric field‐aligned currents deduced from the Ørsted satellite and the ground geomagnetic observations"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044828244480","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Difference in seasonal and long‐term variations in geomagnetic Sq fields between geomagnetic Y and Z components"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137045175448832","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"NRLMSISE‐00 empirical model of the atmosphere: Statistical comparisons and scientific issues"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137045201434752","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Three dimensional ionospheric currents and field aligned currents generated by asymmetrical dynamo action in the ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137045493033344","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Geomagnetic lunar and solar daily variations during the last 100 years"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137045507338240","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Climatology of the inter-hemispheric field-aligned current system in the equatorial ionosphere as observed by CHAMP"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418520093158656","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Long‐term changes in solar quiet (Sq) geomagnetic variations related to Earth's magnetic field secular variation"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418520436326528","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The discrepancy in solar EUV‐proxy correlations on solar cycle and solar rotation timescales and its manifestation in the ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418520576577536","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Ionospheric <i>F</i> region currents at middle and low latitudes estimated from Magsat data"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418521219319680","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Studies of worldwide secular trends in the solar daily geomagnetic variation"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418521502715264","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Sq and EEJ—A Review on the Daily Variation of the Geomagnetic Field Caused by Ionospheric Dynamo Currents"}]},{"@id":"https://cir.nii.ac.jp/crid/1361699993750614528","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Does sunspot number calibration by the “magnetic needle” make sense?"}]},{"@id":"https://cir.nii.ac.jp/crid/1361699993932381696","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The ionospheric dynamo and equatorial magnetic variations"}]},{"@id":"https://cir.nii.ac.jp/crid/1361699994922663680","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The interhemispheric and <i>F</i> region dynamo currents revisited with the Swarm constellation"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981471207990144","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Field-aligned currents driven by the ionospheric dynamo"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262943665345408","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The computation of magnetospheric currents, caused by dynamo action in the ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262945211646080","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Some topics and historical episodes in geomagnetism and aeronomy"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544418658209152","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Contribution of wind, conductivity, and geomagnetic main field to the variation in the geomagnetic <i>Sq</i> field"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544420949168128","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Secular trends in daily geomagnetic variations"}]},{"@id":"https://cir.nii.ac.jp/crid/1362825894864062720","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Measurements and IRI model predictions during the recent solar minimum"}]},{"@id":"https://cir.nii.ac.jp/crid/1362825895867809792","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Quiet ionospheric currents of the southern hemisphere derived from geomagnetic records"}]},{"@id":"https://cir.nii.ac.jp/crid/1363107370539900288","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The correlation between the variation in ionospheric conductivity and that of the geomagnetic Sq field"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233269953314816","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The 10.7 cm solar radio flux (\n                    <i>F</i>\n                    <sub>10.7</sub>\n                    )"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233270115789824","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Magnetospheric currents, associated with the N-S asymmetry of S"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233271264116480","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The variability of ionospheric dynamo currents"}]},{"@id":"https://cir.nii.ac.jp/crid/1370004229808235408","@type":"Product","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Analysis software for the upper atmosphere data developed by the IUGONET project and its application to the polar science"}]},{"@id":"https://cir.nii.ac.jp/crid/1370004229808235524","@type":"Product","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Geomagnetic variation and the equivalent current system generated by an ionospheric dynamo at the solstice"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205233255552","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Inter-University upper Atmosphere Global Observation Network (IUGONET)"},{"@value":"IUGONET project team, Inter-university Upper Atmosphere Global Observation NETwork (IUGONET)"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206510114688","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Quiet day variation of geomagnetic H-field at low latitudes."},{"@value":"Quiet Day Variation of Geomagnetic H-Field at Low Latitude"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681486065536","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Electric potential difference between conjugate points in middle latitudes caused by asymmetric dynamo in the ionosphere."},{"@value":"Electric potential difference between conjugate points in middle latitudes caused in the ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681486838272","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A Theory of Diurnal Magnetic Variations in Equatorial Regions and Conductivity of the Ionosphere <i>E</i> Region"},{"@value":"A Theory of Diurnal Magnetic Variations in Equatorial Regions and Conductivity of the Ionosphere E Region"}]},{"@id":"https://cir.nii.ac.jp/crid/1573950401443025792","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"The solar cycle variability of lunar and solar daily geomagnetic variations"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942189455360","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"International Geomagnetic Reference Field : the 12th generation"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1002/2017ja024342"},{"@type":"KAKEN","@value":"PRODUCT-21740863"},{"@type":"KAKEN","@value":"PRODUCT-21514148"},{"@type":"KAKEN","@value":"PRODUCT-21501738"},{"@type":"KAKEN","@value":"PRODUCT-22512645"},{"@type":"KAKEN","@value":"PRODUCT-22513484"},{"@type":"OPENAIRE","@value":"doi_dedup___::a2a0b1a17402643000b6e66875b3a554"},{"@type":"CROSSREF","@value":"10.1186/s40623-021-01481-6_references_DOI_CKfh4Pa7A6eNHp8vpQpM5LqzFw5"}]}