{"created":"2023-07-25T11:06:37.573807+00:00","id":10091,"links":{},"metadata":{"_buckets":{"deposit":"059cb103-4c45-4c42-843b-4fda41692557"},"_deposit":{"created_by":17,"id":"10091","owners":[17],"pid":{"revision_id":0,"type":"depid","value":"10091"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00010091","sets":[]},"author_link":["18343","18684","18342","18346","17477","18341","18683","18344","18686","18687","18345","18685","18682"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"249","bibliographicPageStart":"237","bibliographicVolumeNumber":"2","bibliographic_titles":[{"bibliographic_title":"Polar science"},{"bibliographic_title":"Polar science","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In order to estimate the dynamic structure of VLF ionospheric exit point, we conducted multipointground-based observation of natural VLF emissions at three unmanned sites: West Ongul (69°01' S, 39°30' E), Skallen (69°40' S, 39°24' E), and H100 (69°18' S, 41°19' E) around Japanese Syowa station, Antarctica,during a whole year of 2006. In this observation, we developed three sets of unmanned autonomous observation systems for natural VLF emissions. Each observation system consists of two crossed vertical loop antennas to pick up North-South (NS) and East-West (EW) magnetic components, a multi-channel analyzer, and a data logger. The intensity and polarization of NS and EW magnetic components are obtained in 4 spaced frequency (0.5, 1.0, 2.0, and 6.0 kHz) channels by the multi-channel analyzer. The VLF emissions observed at the three sites exhibit the interesting difference in wave intensity as well as polarization which would give us an important information on the locations of their ionospheric exit point. To find the distinct exit point, at first we have theoretically calculated the spatial distributions of wave intensity and polarization on the Earth for VLF whistler mode waves coming down from the magnetized ionosphere, by using the full-wave analysis. Then, we have compared the calculated results with the observed data, to evaluate the possible locations of the ionospheric exit point for the auroral hiss events.As an example, the direction of the estimated ionospheric exit point for the auroral hiss event at 31 March 2006 was found to be consistent with a bright aurora region. However, in this case, the estimated ionospheric exit point was located a few hundred kilometers equatorward of the associated aurora. This would suggest that the ray paths for the auroral hiss could be different from the directions of the geomagnetic field lines for auroral precipitation.","subitem_description_type":"Abstract"}]},"item_10001_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"VLFエミッションの電離層透過域の動的構造を推定するため、昭和基地周辺3地点において自然VLF波動の無人多地点観測を行った。3地点で同時観測されたVLFエミッションは、その透過域の位置情報を含んだ波動強度、偏波の違いを示した。我々は、精確な電離層透過域を見出すため、ホイスラモード波の地上での波動強度と偏波を理論的に解析し、そして観測結果と比較し、観測結果を説明できる透過域の位置を推定した。オーロラヒスについて解析した結果、電離層透過域の方位は、関連するオーロラの発生方位と一致した。しかし、電離層透過域は、オーロラの発生位置より約数百キロ低緯度側に位置し、降下粒子の磁力線方向と波動レイパスの違いを示唆する結果を示した。","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"国立極地研究所"}]},"item_10001_relation_12":{"attribute_name":"論文ID（NAID）","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"110007088187","subitem_relation_type_select":"NAID"}}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"10.1016/j.polar.2008.09.001"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1016/j.polar.2008.09.001","subitem_relation_type_select":"DOI"}}]},"item_10001_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12240481","subitem_source_identifier_type":"NCID"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"18739652","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ozaki, Mitsunori"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yagitani,  Satoshi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nagano, Isamu"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hata, Yujiro"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamagishi, Hisao"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sato, Natsuo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kadokura, Akira"},{"creatorName":"Kadokura, Akira","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ozaki, Mitsunori","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yagitani,  Satoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nagano, Isamu","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hata, Yujiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamagishi, Hisao","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sato, Natsuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Unmanned observation","subitem_subject_scheme":"Other"},{"subitem_subject":"Natural VLF emissions","subitem_subject_scheme":"Other"},{"subitem_subject":"Ionospheric exit point","subitem_subject_scheme":"Other"},{"subitem_subject":"Full-wave analysis","subitem_subject_scheme":"Other"},{"subitem_subject":"Antarctica","subitem_subject_scheme":"Other"},{"subitem_subject":"Unmanned observation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Natural VLF emissions","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Ionospheric exit point","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Full-wave analysis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Antarctica","subitem_subject_language":"en","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":"Localization of VLF ionospheric exit point by comparison of multipoint ground-based observation with full-wave analysis","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Localization of VLF ionospheric exit point by comparison of multipoint ground-based observation with full-wave analysis"},{"subitem_title":"Localization of VLF ionospheric exit point by comparison of multipoint ground-based observation with full-wave analysis","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"17","path":["1365"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-10-15"},"publish_date":"2014-10-15","publish_status":"0","recid":"10091","relation_version_is_last":true,"title":["Localization of VLF ionospheric exit point by comparison of multipoint ground-based observation with full-wave analysis"],"weko_creator_id":"17","weko_shared_id":17},"updated":"2023-07-25T14:07:58.787753+00:00"}