{"_buckets": {"deposit": "5be04c12-1af6-4211-9dbc-62b3fbd159bd"}, "_deposit": {"id": "32620", "owner": "1", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "32620"}, "status": "published"}, "_oai": {"id": "oai:repository.dl.itc.u-tokyo.ac.jp:00032620", "sets": []}, "author_link": ["126312", "126313", "126314", "126309", "126310", "126311"], "item_4_alternative_title_1": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "Evaluation of magmatic contribution to the 2000 eruption at Usu Volcano, North Japan, by XRF bulk ash composition analysis"}]}, "item_4_biblio_info_7": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2001-09-25", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "251", "bibliographicPageStart": "247", "bibliographicVolumeNumber": "76", "bibliographic_titles": [{"bibliographic_title": "\u6771\u4eac\u5927\u5b78\u5730\u9707\u7814\u7a76\u6240\u5f59\u5831 = Bulletin of the Earthquake Research Institute, University of Tokyo"}]}]}, "item_4_description_13": {"attribute_name": "\u30d5\u30a9\u30fc\u30de\u30c3\u30c8", "attribute_value_mlt": [{"subitem_description": "application/pdf", "subitem_description_type": "Other"}]}, "item_4_description_5": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "XRF analysis of bulk ash composition offers information on magma contribution easily and quickly for monitoring temporal changes of eruptions. The 2000 eruption at Usu Volcano, North Japan, started at ca. 13 : 10 on March 31. Ash emitted on March 31, April 1, 2, and 4 were collected to investigate temporal changes in bulk compositions by XRF analysis. All the ash samples are plotted in a composition range between essential material and basement rocks. Among all of the ash, that of the March 31 eruption, the largest one, has the nearest composition to the essential material. These data indicate that the ash is a mixture of the essential material and basement rocks, and that the nearer the ash composition is to the essential material, the larger is the magma contribution to the eruption.", "subitem_description_type": "Abstract"}]}, "item_4_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "126312", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Shimano, Taketo"}]}, {"nameIdentifiers": [{"nameIdentifier": "126313", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Nakada, Setsuya"}]}, {"nameIdentifiers": [{"nameIdentifier": "126314", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Kaneko, Takayuki"}]}]}, "item_4_identifier_registration": {"attribute_name": "ID\u767b\u9332", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.15083/0000032620", "subitem_identifier_reg_type": "JaLC"}]}, "item_4_publisher_20": {"attribute_name": "\u51fa\u7248\u8005", 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