{"created":"2023-07-25T11:06:36.460256+00:00","id":10066,"links":{},"metadata":{"_buckets":{"deposit":"ee7099fd-2c71-41a7-98e4-45d1a983926c"},"_deposit":{"created_by":17,"id":"10066","owners":[17],"pid":{"revision_id":0,"type":"depid","value":"10066"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00010066","sets":[]},"author_link":["18540","18229","18539","18231","18541","18230"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2007-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"71","bibliographicPageStart":"63","bibliographicVolumeNumber":"1","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":"We applied an image correlation method to Japanese Earth Resources Satellite-1 (JERS-1) synthetic aperture radar (SAR) data obtained from 1996 to 1998 to examine flow velocity within Shirase Glacier, Antarctica. From the grounding line to the downstream region of the glacier, the obtained ice-flow velocity was systematically higher on the western streamline than the eastern. The differences between the two streamlines were 0.31 km/a in 1996 and 0.37 km/a in 1998, significantly larger than the error estimate of 0.03 km/a. The direction of ice flow was about 312° at the grounding line and changed to 327° at 10 km, 346° at 20 km and 2° at 30 km downstream from the grounding line. The total accumulated deflection is 50° to the east. Under the assumption of the conservation of ice mass across the glacier, the observed eastward change in flow direction can be explained by an asymmetric deepening of bedrock topography, that is, across the 8 km width of the glacier, the eastern side is 50 m (10%) deeper than the western side. This eastward turning of flow direction appears to be accelerated by tributary inlets, that flow to the north and northeast at 60–75% of the velocity of inlets on the western streamline.","subitem_description_type":"Abstract"}]},"item_10001_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"南極・白瀬氷河の流動速度を地球資源衛星1号の合成開口レーダーデータに画像相関法を適用して調べました。氷河の氷床接地縁から下流部にかけての流動速度は、常に東側より西側で速いことがわかりました。西側、東側の流動速度の差は、1996年には 0.31 km/a、1998年には 0.37 km/a で有意に（誤差0.03 km/a）大きいです。流れの方角は、接地縁では 312度、以後下流に向かって 10，20，30 km の地点では、それぞれ327、346、2度と大きく東にカーブしていきます。この原因は、氷河下の地形が東側の方が西側より系統的に 50ｍ 深いということと、西側氷床から流入する支流で押されていることによると思われます。","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":"110006596694","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.2007.09.003"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1016/j.polar.2007.09.003","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":"Nakamura, Kazuki"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Doi, Koichiro"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shibuya, Kazuo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nakamura, Kazuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Doi, Koichiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shibuya, Kazuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Shirase Glacier","subitem_subject_scheme":"Other"},{"subitem_subject":"Ice flow","subitem_subject_scheme":"Other"},{"subitem_subject":"Turning of flow direction","subitem_subject_scheme":"Other"},{"subitem_subject":"Seasonal change","subitem_subject_scheme":"Other"},{"subitem_subject":"Synthetic aperture radar (SAR)","subitem_subject_scheme":"Other"},{"subitem_subject":"Shirase Glacier","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Ice flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Turning of flow direction","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Seasonal change","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Synthetic aperture radar (SAR)","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":"Why is Shirase Glacier turning its flow direction eastward?","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Why is Shirase Glacier turning its flow direction eastward?"},{"subitem_title":"Why is Shirase Glacier turning its flow direction eastward?","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"17","path":["1367"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-10-15"},"publish_date":"2014-10-15","publish_status":"0","recid":"10066","relation_version_is_last":true,"title":["Why is Shirase Glacier turning its flow direction eastward?"],"weko_creator_id":"17","weko_shared_id":-1},"updated":"2023-07-25T16:21:37.638990+00:00"}