{"created":"2023-07-25T11:06:42.251880+00:00","id":10186,"links":{},"metadata":{"_buckets":{"deposit":"ec750177-10c0-4f15-91fc-f99014b27e84"},"_deposit":{"created_by":17,"id":"10186","owners":[17],"pid":{"revision_id":0,"type":"depid","value":"10186"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00010186","sets":[]},"author_link":["19345","19346","19347","19344","19342","19343"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"455","bibliographicPageStart":"443","bibliographicVolumeNumber":"4","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":"Temporal fluctuations in the flow velocity of Shirase Glacier in Antarctica were studied using 15 synthetic aperture radar (SAR) scenes obtained by the Japanese Earth Resources Satellite-1 (JERS-1) in 1996-1998 and 9 phased-array-type L-band SAR (PALSAR) scenes obtained by the Advanced Land Observing Satellite (ALOS) in 2007-2008. The scenes were analyzed using image correlation. The relative accuracy of the determined velocities was ±0.03 km/a for JERS-1 and ±0.02 km/a for ALOS. No marked temporal changes in ice-flow velocity at the grounding line (GL) were noted during either period; the ice velocity varied from 2.33 km/a (1996) to 2.27 km/a (2007). However, a marked difference between the two periods was found upstream from the GL on the central streamline, as a function of distance from the GL. Between the GL and the point 30 km downstream, ice velocities tended to be lower in 2007?2008 than in 1996?1998. Upstream from the GL, the velocities were higher in 2007?2008 than in 1996?1998, increasingly so with distance upstream, reaching a maximum of approximately 0.54 km/a at around 17-18 km upstream from the GL before diminishing again to a value of 0.25 km/a at 30 km upstream. No clear seasonal variations in flow velocity were observed at 17-18 km upstream from the GL in 1996-1998; however, in 2007-2008, the summer (December 2007-February 2008) velocity was 1.27 km/a, whereas the winter (June-August 2008) velocity was 1.06 km/a, representing a marked difference of 0.21 km/a. A larger difference between these seasons (0.38 km/a) was found at 20 km above the GL.","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の経年変動をJERS-1（地球資源衛星1号）とALOS（陸域観測技術衛星）搭載の合成開口レーダを用いて、JERS-1では1996年から1998年、ALOSでは2007年から2008年に得られたデータを画像相関法により調べた。これら期間において、接地線（GL）における流動速度に変化は見られない。しかし、GLから上流域の季節変動は1996年から1998年において明瞭ではないが、2007年から2008年においては0.21km/aであり、有意な差が認められた。","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":"110007721875","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.2010.04.010"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1016/j.polar.2010.04.010","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":"Image correlation","subitem_subject_scheme":"Other"},{"subitem_subject":"Flow velocity","subitem_subject_scheme":"Other"},{"subitem_subject":"Annual change","subitem_subject_scheme":"Other"},{"subitem_subject":"ALOS PALSAR","subitem_subject_scheme":"Other"},{"subitem_subject":"Shirase Glacier","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Image correlation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Flow velocity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Annual change","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"ALOS PALSAR","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":"Fluctuations in the flow velocity of the Antarctic Shirase Glacier over an 11-year period","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Fluctuations in the flow velocity of the Antarctic Shirase Glacier over an 11-year period"},{"subitem_title":"Fluctuations in the flow velocity of the Antarctic Shirase Glacier over an 11-year period","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"17","path":["1356"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-10-16"},"publish_date":"2014-10-16","publish_status":"0","recid":"10186","relation_version_is_last":true,"title":["Fluctuations in the flow velocity of the Antarctic Shirase Glacier over an 11-year period"],"weko_creator_id":"17","weko_shared_id":-1},"updated":"2023-07-25T16:20:42.859155+00:00"}