{"created":"2023-06-20T15:16:17.342058+00:00","id":9984,"links":{},"metadata":{"_buckets":{"deposit":"1d5598bd-73b0-467d-b1c6-7f4ac9a4692e"},"_deposit":{"created_by":3,"id":"9984","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"9984"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:00009984","sets":["8:32"]},"author_link":["70878","70877"],"item_5_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-05-01","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{},{"bibliographic_title":"Research Report NIFS-Series","bibliographic_titleLang":"en"}]}]},"item_5_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The geomagnetic field shields the Earth from a large proportion of incoming radiation, andhas thus played a key role in sustaining life on Earth. Paleomagnetic measurements haveshown that the geomagnetic field undergoes many reversals of polarity. Continuousobservations of the field intensity have revealed a weakening of approximately 10% over thelast 150 years. If we assume that this trend indicates the onset of polarity reversal, thegeomagnetic field, particularly the dipole component, may weaken sufficiently over the nextthousand years to expose the atmosphere and nearby space to significantly increased levels ofcosmic and solar radiation. This may have a serious impact on vital infrastructure such assatellites, air traffic, and electricity networks, as well as on global climate changes, indicatingthat measures should better be taken in an attempt to support the limited protection providedby the remaining higher-order multipole fields and atmosphere. Here we show that a series ofplanet-encircling superconducting rings can provide an artificial geomagnetic field equivalentto 10% of the present-day field necessary to prevent adverse effects. A feasible systemconsists of 12 latitudinal high-temperature superconducting rings, each carrying 6.4 MAcurrent with a modest 1 GW of power requirement.","subitem_description_type":"Abstract"}]},"item_5_source_id_10":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0915-633X","subitem_source_identifier_type":"ISSN"}]},"item_5_text_8":{"attribute_name":"報告書番号","attribute_value_mlt":[{"subitem_text_value":"NIFS-886"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Motojima,  O.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yanagi,  N.","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-03-11"}],"displaytype":"detail","filename":"NIFS-886.pdf","filesize":[{"value":"592.2 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"NIFS-886.pdf","url":"https://nifs-repository.repo.nii.ac.jp/record/9984/files/NIFS-886.pdf"},"version_id":"36eeb25d-89f7-4291-825a-2b46819c2c3a"}]},"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":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network","subitem_title_language":"en"}]},"item_type_id":"5","owner":"3","path":["32"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-02-05"},"publish_date":"2010-02-05","publish_status":"0","recid":"9984","relation_version_is_last":true,"title":["Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-06-20T20:41:53.168657+00:00"}