{"created":"2023-05-15T12:00:55.146218+00:00","id":7921,"links":{},"metadata":{"_buckets":{"deposit":"5c633276-80d5-412d-9468-27c882e8b74a"},"_deposit":{"created_by":3,"id":"7921","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"7921"},"status":"published"},"_oai":{"id":"oai:kyutech.repo.nii.ac.jp:00007921","sets":["8:9"]},"author_link":["34939","34937","34943","34941","34938","34945","34936","34940","34942"],"item_21_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-10-11","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"759431-17","bibliographicPageStart":"759431-1","bibliographicVolumeNumber":"8","bibliographic_titles":[{"bibliographic_title":"Frontiers in Astronomy and Space Sciences"}]}]},"item_21_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Watari et al. (Space Weather, 2009, 7) found that the geomagnetically induced current (GIC) in Hokkaido, Japan (35.7° geomagnetic latitude (GML)), is well correlated with the y-component magnetic field (By) (correlation coefficients >0.8) and poorly correlated with Bx,z and dBx,y,z/dt/. The linear correlation with By would help predict the GIC, if we have capabilities of reproducing the magnetosphere–ionosphere currents during space weather disturbances. To validate the linear correlation with By for any periods (T) of disturbances, we made correlation analyses for the geomagnetic sudden commencements and pulsations (T = 1–10 min), quasi-periodic DP2 fluctuations (30 min), substorm positive bays (60 min), geomagnetic storms (1–20 h), and quiet-time diurnal variations (8 h). The linear correlation is found to be valid for short periods (cc > 0.8 for T < 1 h) but not for long periods (cc < 0.3 for T> 6 h). To reproduce the GIC with any periods, we constructed one-layer model with uniform conductor and calculated the electric field (IEF) induced by By using the convolution of dBy/dt and the step response of the conductor. The IEF is found to be correlated with the GIC for long periods (cc > 0.9), while the GIC-By correlation remains better for short periods. To improve the model, we constructed a two-layer model with highly conductive upper and less conductive lower layers. The IEF is shown to reproduce the GIC with cc > 0.9 for periods ranging from 1 min to 24 h. The model is applied to the GIC measured at lower latitudes in Japan (25.3° GML) with strong By dependence. The mechanism of the strong By dependence of the GIC remains an issue, but a possible mechanism for the daytime GIC is due to the zeroth-order transverse magnetic (TM0) mode in the Earth-ionosphere waveguide, by which the ionospheric currents are transmitted from the polar to equatorial ionosphere.","subitem_description_type":"Abstract"}]},"item_21_description_60":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"Journal Article","subitem_description_type":"Other"}]},"item_21_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"34941","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kikuchi,  T."}]},{"nameIdentifiers":[{"nameIdentifier":"34942","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ebihara,  Y."}]},{"nameIdentifiers":[{"nameIdentifier":"34943","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Hashimoto,  K.K."}]},{"affiliations":[{"affiliationNames":[{"affiliationName":"","lang":"ja"}],"nameIdentifiers":[]}],"familyNames":[{"familyName":"Kitamura","familyNameLang":"en"},{"familyName":"北村","familyNameLang":"ja"},{"familyName":"キタムラ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Kentaro","givenNameLang":"en"},{"givenName":"健太郎","givenNameLang":"ja"},{"givenName":"ケンタロウ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"34939","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"60380549","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/nrid/1000060380549"},{"nameIdentifier":"23567970800","nameIdentifierScheme":"Scopus著者ID","nameIdentifierURI":"https://www.scopus.com/authid/detail.uri?authorId=23567970800"},{"nameIdentifier":"100001363","nameIdentifierScheme":"九工大研究者情報","nameIdentifierURI":"https://hyokadb02.jimu.kyutech.ac.jp/html/100001363_ja.html"}],"names":[{"name":"Kitamura, Kentaro","nameLang":"en"},{"name":"北村, 健太郎","nameLang":"ja"},{"name":"キタムラ, ケンタロウ","nameLang":"ja-Kana"}]},{"nameIdentifiers":[{"nameIdentifier":"34945","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Watari,  S."}]}]},"item_21_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Frontiers"}]},"item_21_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.3389/fspas.2021.759431","subitem_relation_type_select":"DOI"}}]},"item_21_rights_13":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright (c) 2021 Kikuchi, Ebihara, Hashimoto, Kitamura and Watari. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms."}]},"item_21_select_59":{"attribute_name":"査読の有無","attribute_value_mlt":[{"subitem_select_item":"yes"}]},"item_21_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2296-987X","subitem_source_identifier_type":"ISSN"}]},"item_21_subject_16":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"450","subitem_subject_scheme":"NDC"}]},"item_21_text_36":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Nagoya University, Kyoto University"},{"subitem_text_value":"Kyoto University"},{"subitem_text_value":"Kibi International University"},{"subitem_text_value":"National Institute of Technology, Tokuyama College, Kyushu Institute of Technology"},{"subitem_text_value":"National Institute of Information and Communications Technology"}]},"item_21_text_63":{"attribute_name":"連携ID","attribute_value_mlt":[{"subitem_text_value":"10855"}]},"item_21_version_type_58":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kikuchi,  Takashi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ebihara,  Yusuke"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hashimoto,  Kumiko. K."}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"Kitamura, Kentaro","creatorNameLang":"en"},{"creatorName":"北村, 健太郎","creatorNameLang":"ja"},{"creatorName":"キタムラ, ケンタロウ","creatorNameLang":"ja-Kana"}],"familyNames":[{},{},{}],"givenNames":[{},{},{}],"nameIdentifiers":[{},{},{},{}]},{"creatorNames":[{"creatorName":"Watari,  Shin-Ichi"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2023-03-16"}],"displaytype":"detail","filename":"LaSEINE-2021_026.pdf","filesize":[{"value":"3.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"LaSEINE-2021_026.pdf","url":"https://kyutech.repo.nii.ac.jp/record/7921/files/LaSEINE-2021_026.pdf"},"version_id":"e797b290-941b-4ba8-8b11-f87dd6580562"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"geomagnetically induced current (GIC)","subitem_subject_scheme":"Other"},{"subitem_subject":"middle latitude","subitem_subject_scheme":"Other"},{"subitem_subject":"polar-equatorial ionospheric currents","subitem_subject_scheme":"Other"},{"subitem_subject":"TM0 mode in the earth-ionosphere waveguide","subitem_subject_scheme":"Other"},{"subitem_subject":"induced electric field in the two-layer conductivity model","subitem_subject_scheme":"Other"},{"subitem_subject":"geomagnetic by dependence of GIC","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Reproducibility of the Geomagnetically Induced Currents at Middle Latitudes During Space Weather Disturbances","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Reproducibility of the Geomagnetically Induced Currents at Middle Latitudes During Space Weather Disturbances"}]},"item_type_id":"21","owner":"3","path":["9"],"pubdate":{"attribute_name":"公開日","attribute_value":"2023-03-16"},"publish_date":"2023-03-16","publish_status":"0","recid":"7921","relation_version_is_last":true,"title":["Reproducibility of the Geomagnetically Induced Currents at Middle Latitudes During Space Weather Disturbances"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2024-04-02T08:34:52.377909+00:00"}