{"created":"2023-07-25T11:00:25.024801+00:00","id":2230,"links":{},"metadata":{"_buckets":{"deposit":"2c033a48-35c7-4782-b0c1-c37b7413eaa8"},"_deposit":{"created_by":4,"id":"2230","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"2230"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00002230","sets":["1:356:403"]},"author_link":["1808","60274","60272","60275","60276","60273"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1994-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"255","bibliographicPageStart":"247","bibliographicVolumeNumber":"49","bibliographic_titles":[{"bibliographic_title":"Memoirs of National Institute of Polar Research. Special issue"}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Tchistiakov,V. K.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kracilev,A.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Lipenkov, V. Ya.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Balestrieri,J. Ph.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Rado,C.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Petit,J. R.","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_1_description_1":{"attribute_name":"ページ属性","attribute_value_mlt":[{"subitem_description":"P(論文)","subitem_description_type":"Other"}]},"item_1_description_12":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"A coring hole (5G) was drilled at Vostok station down to the depth of 2500m using an electro-thermal drilling system. Relationships between ice core, hole diameters, and drill speed are presented. The hole was only partially filled with fluid (of density of 860kg m^<-3>) so that ice pressure was not counter-balanced by the fluid column. After one year, diameter us, depth was measured. The hole deformation was found to be significant for depths below 1500m. The hole closure rate is in agreement with the law proposed by PATERSON (Rev. Geophys. Space Phys., 15,47,1977) and extrapolated to Vostok conditions as well as with previous studies from BLINOV and DMITRIEV (Antarktika, 26,95,1987). This information as well as the data from the fluid density properties is used to predict the hole closure for greater depths. Due to some drawbacks in using a high density fluid for thermal drilling operations a technical strategy for drilling toward 3000m is presented.","subitem_description_type":"Other"}]},"item_1_source_id_13":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA00733561","subitem_source_identifier_type":"NCID"}]},"item_1_text_10":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"St. Petersburg Mining Institute/St. Petersburg Mining Institute/Arctic and Antarctic Research Institute/Laboratoire de Glaciologie et Geophysique de l'Environnement/Laboratoire de Glaciologie et Geophysique de l'Environnement/Laboratoire de Glaciologie et Geophysique de l'Environnement"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1994-03-01"}],"displaytype":"detail","filename":"KJ00000012783.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000012783","url":"https://nipr.repo.nii.ac.jp/record/2230/files/KJ00000012783.pdf"},"version_id":"ff797797-da69-4854-b452-655004bc17c1"}]},"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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Behavior of a deep hole drilled in ice at Vostok Station","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Behavior of a deep hole drilled in ice at Vostok Station","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["403"],"pubdate":{"attribute_name":"公開日","attribute_value":"1994-03-01"},"publish_date":"1994-03-01","publish_status":"0","recid":"2230","relation_version_is_last":true,"title":["Behavior of a deep hole drilled in ice at Vostok Station"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T13:40:14.652123+00:00"}