{"created":"2021-03-01T06:33:57.936758+00:00","id":28184,"links":{},"metadata":{"_buckets":{"deposit":"696fb0bd-f1c1-4d87-bdad-a654b23cd4a6"},"_deposit":{"id":"28184","owners":[],"pid":{"revision_id":0,"type":"depid","value":"28184"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00028184","sets":["453:456","503:836:1555:1578"]},"item_7_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Origin of anions in groundwater from the Mushigame landslide area"}]},"item_7_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1984-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"42","bibliographicPageStart":"33","bibliographicVolumeNumber":"5","bibliographic_titles":[{"bibliographic_title":"新潟大学積雪地域災害研究センター研究年報"},{"bibliographic_title":"新潟大学積雪地域災害研究センター研究年報","bibliographic_titleLang":"en"}]}]},"item_7_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"This paper traces the origin of anions of groundwaters in Mushigame landslide area. The groundwaters abound in such anions as Cl^-, HCO^-_3 and SO^<-->_4. It is important to understand the behavior of these anions in landslide area because SO^<-->_4 and HCO^-_3 are main agents of chemical weathering of rock-forming minerals and Cl^- is an indicator of marinogenic water, volcanic activity or human activity. The groundwaters were collected at a depth of 5 meters from ground surface daily and from 10, 15, 20, 25 and 27.5m depth layer in bore-hole near landslide scarp and analyzed for Na^+, K^+, Ca^<++>, Mg^<++>, Cl^-, HCO^-_3, SO^<-->_4 and I^-. There are found three type waters, sulfate type containing SO^<-->_4, Ca^<++>, and Mg^<++>, chloride type waters containing Cl^-, HCO^-_3, I^- and Na^+ and their mixtures. From the distribution of ions, it is concluded that chloride type waters originate from deep layer while the sulfate type waters come from surface soil. The air in the bore-hole contained 2-7 % CO_2 and the gas separated from bottom water contained 5-7 % CO_2. These observation suggests that bubbles from bottom water rise to surface and disperse into atmosphere. The CO_2 liberated from water should be accumulated in the free space of bore-hole. The CO_2 gas should dissolve in surface water in contact with low CO_2 partial pressure water and dissociate into HCO^-_3 reacting with minerals. The mudstones collected from Mushigame, Nigorisawa and Kamibanba landslide areas contained framboidal pyrite which was easily oxidized and produced sulfate ions by hydrogen peroxide. These also produced sulfate ions by air oxidation. The pyrite-oxidation must be acceralated by iron and sulfur-oxidizing bacteria detected in Mushigame and Nigorisawa mudstones. From these observations and experiments, we concluded that (1) chloride ions originated from the bottom water similar to oil field water, (2) hydrogencarbonate ions were supplied from HCO^-_3 and CO_2 dissolving in the deep water, and (3) sulfate ions were produced from pyrite in mudstone by chemical and microbiological oxidation.","subitem_description_type":"Abstract"}]},"item_7_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"162003","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Sato, Osamu"}]},{"nameIdentifiers":[{"nameIdentifier":"162004","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Aoki, Shigeru"}]},{"nameIdentifiers":[{"nameIdentifier":"162005","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Suzuki, Koji"}]}]},"item_7_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"新潟大学積雪地域災害研究センター"}]},"item_7_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_7_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00183327","subitem_source_identifier_type":"NCID"}]},"item_7_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03877892","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"佐藤, 修"}],"nameIdentifiers":[{"nameIdentifier":"162000","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"青木, 滋"}],"nameIdentifiers":[{"nameIdentifier":"162001","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鈴木, 幸治"}],"nameIdentifiers":[{"nameIdentifier":"162002","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-20"}],"displaytype":"detail","filename":"5_33-42.pdf","filesize":[{"value":"658.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"5_33-42.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/28184/files/5_33-42.pdf"},"version_id":"e2e13d0a-f0ab-4e04-882d-88d852def42c"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"虫亀地すべり地の地下水のアニオンの起源 : 地すべり地の陸水の水質3","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"虫亀地すべり地の地下水のアニオンの起源 : 地すべり地の陸水の水質3"},{"subitem_title":"虫亀地すべり地の地下水のアニオンの起源 : 地すべり地の陸水の水質3","subitem_title_language":"en"}]},"item_type_id":"7","owner":"1","path":["456","1578"],"pubdate":{"attribute_name":"公開日","attribute_value":"2016-03-03"},"publish_date":"2016-03-03","publish_status":"0","recid":"28184","relation_version_is_last":true,"title":["虫亀地すべり地の地下水のアニオンの起源 : 地すべり地の陸水の水質3"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:58:09.778151+00:00"}