{"created":"2023-07-25T11:03:10.445888+00:00","id":5999,"links":{},"metadata":{"_buckets":{"deposit":"e81fb303-a661-4c15-add4-166e8c4e7345"},"_deposit":{"created_by":4,"id":"5999","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"5999"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00005999","sets":["1259:1260:1264:773:778"]},"author_link":["43739","9907","43738"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"88","bibliographicPageStart":"71","bibliographicVolumeNumber":"14","bibliographic_titles":[{"bibliographic_title":"Antarctic meteorite research"}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Osawa,Takahito","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kagi,Hiroyuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nagao,Keisuke","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":"Mid-infrared absorption spectra were obtained for 6 carbonaceous chondrites and 6 Antarctic micrometeorites (AMMs) with transmission light using an IR microscope. Obvious absorption bands caused by O-H stretching vibration at 3400cm^<-1> and H-O-H bending vibration at 1640cm^<-1> were detected for CI, CM2,CR2,and CO3 chondrites. All the chondrite samples had Si-O stretching band at around 1000cm^<-1>. Allende (CV3) exhibited only Si-O stretching band at near 900cm^<-1> and no O-H bands. Infrared absorption spectra for AMMs showed no O-H stretching vibration reflecting their dry condition, except for F97AC019 and F97AC017 with weak O-H stretching band. Heating experiments on the grains of Murchison and Orgueil with sizes as small as AMMs (&acd;100μm) were carried out in order to clarify the dehydration effect of micrometeorite during the atmospheric entry. Heating times were 30 and 60s at temperatures every 100℃ from 500℃ to 1000℃. At relatively lower temperature condition (&le;700℃), water in carbonaceous chondrites was not depleted. O-H stretching vibration at 3400cm^<-1> was, however, vanished at higher temperature (&ge;800℃). This might show that AMMs were heated to 800℃ or more during atmospheric entry if our hearting duration is reasonable. Noble gas measurement using laser heating was performed for individual AMMs after the infrared microscopic analyses. Solar-He was detected for 4 samples. F97AC019 with very high concentration of helium (8.1×10^<-3>cm^3 STP/g) preserve solar-Ne and primordial trapped argon component. We have discovered an extraordinary AMM, F97AC021,with highly concentrated organic matters. Intense C-H stretching vibration at 2900cm^<-1> and complex absorption pattern appeared in the range from 1400cm^<-1> to 1800cm^<-1> were detected. The AMM might have a potential to have plenty of extraterrestrial organic compounds.","subitem_description_type":"Other"}]},"item_1_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15094/00005999","subitem_identifier_reg_type":"JaLC"}]},"item_1_publisher_22":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"National Institute of Polar Research"}]},"item_1_source_id_13":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA11182426","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":"Laboratory for Earthquake Chemistry, Graduate School of Science, The University of Tokyo/Laboratory for Earthquake Chemistry, Graduate School of Science, The University of Tokyo/Laboratory for Earthquake Chemistry, Graduate School of Science, The University of Tokyo"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2001-03-01"}],"displaytype":"detail","filename":"KJ00000040991.pdf","filesize":[{"value":"1.6 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000040991","url":"https://nipr.repo.nii.ac.jp/record/5999/files/KJ00000040991.pdf"},"version_id":"90e49aed-6aaf-4d3f-9b42-68608b44b17e"}]},"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":"Mid-infrared transmission spectra of individual Antarctic micrometeorites and carbonaceous chondrites","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Mid-infrared transmission spectra of individual Antarctic micrometeorites and carbonaceous chondrites"}]},"item_type_id":"1","owner":"4","path":["778"],"pubdate":{"attribute_name":"公開日","attribute_value":"2001-03-01"},"publish_date":"2001-03-01","publish_status":"0","recid":"5999","relation_version_is_last":true,"title":["Mid-infrared transmission spectra of individual Antarctic micrometeorites and carbonaceous chondrites"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T12:07:34.997056+00:00"}