{"_buckets": {"deposit": "2971e58e-e669-4286-a1ed-6fade398f88b"}, "_deposit": {"id": "11751", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "11751"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00011751"}, "item_9_alternative_title_19": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u8a00\u8a9e\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "Sedimentary environment in Lake Biwa : Carbon isotope of lake and river sediments(Proceedingsof the 17^\u003cth\u003e Symposium on Researches Using the Tandetron AMS System at Nagoya University in 2004)"}]}, "item_9_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2005-03", "bibliographicIssueDateType": "Issued"}, "bibliographicPageEnd": "83", "bibliographicPageStart": "73", "bibliographicVolumeNumber": "16", "bibliographic_titles": [{"bibliographic_title": "\u540d\u53e4\u5c4b\u5927\u5b66\u52a0\u901f\u5668\u8cea\u91cf\u5206\u6790\u8a08\u696d\u7e3e\u5831\u544a\u66f8"}]}]}, "item_9_description_4": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "Lake sediment cores in Lake Biwa, KAN and KAS collected from the northern and southern basins, respectively, were measured for carbon content, \u03b4^\u003c13\u003eC and \u0394^\u003c14\u003eC. Acid-alkali-insoluble fraction (residue) and acid-soluble fraction obtained by acid-alkali-acid treatment of the sediments were analyzed. Carbon content of the northern basin sediment (KAN) is very high at the upper layer than 5cm depth and that of the southern basin sediment (KAS) has a highest peak at 19cm depth. \u03b4^\u003c13\u003eC of KAN is the highest at \u301c5cm depth layer and that of KAS is the highest at \u301c20cm depth. The highest peak of KAS corresponded to \u301c1960 A.D. might be effected by nourishing. \u0394^\u003c14\u003eC suddenly increases between 1950 and 1985 in the vertical distribution of KAN residue. This high \u0394^\u003c14\u003eC is due to contribution of artificial ^\u003c14\u003eC produced in atmosphere by nuclear and thermal nuclear tests after 1950A.D. \u0394^\u003c14\u003eC of KAS residue has a wide peak between about 1920 and 1970. This suggests the sediment in the southern basin could be a little disturbed. The ^\u003c14\u003eC ages of KAN and KAS are older than the age obtained from ^\u003c210\u003ePb or ^\u003c137\u003eCs age, and the true sedimentation age cannot be decided from ^\u003c14\u003eC data of the sediments in this study. Therefore, the lake sediments need to be separated into much smaller fraction such as chlorophyll and lipid which are derived from lake phytoplankton. \u03b4^\u003c13\u003eC and \u0394^\u003c14\u003eC of residue are higher than those of acid-soluble fraction, indicating that ^\u003c13\u003eC and ^\u003c14\u003eC might be relatively gathered in fulvic acid. The sediments in rivers flowing in Lake Biwa were also measured for C content and \u03b4^\u003c13\u003eC of residue and acid-soluble fractions. Carbon content of the residue in river sediments is especially low, while that of acid-soluble fraction is high. The \u03b4^\u003c13\u003eC of river sediments is higher at the east-south side of Lake Biwa than at north-west side. This might be caused by different amount of plant and matter with high \u03b4^\u003c13\u003eC at the east-south and north-west sides. Furthermore, the \u03b4^\u003c13\u003eC of river sediments could affect the \u03b4^\u003c13\u003eC of bottom sediments in Lake Biwa.", "subitem_description_type": "Abstract"}]}, "item_9_description_5": {"attribute_name": "\u5185\u5bb9\u8a18\u8ff0", "attribute_value_mlt": [{"subitem_description": "\u7b2c17\u56de\u540d\u53e4\u5c4b\u5927\u5b66\u30bf\u30f3\u30c7\u30c8\u30ed\u30f3\u52a0\u901f\u5668\u8cea\u91cf\u5206\u6790\u8a08\u30b7\u30f3\u30dd\u30b8\u30a6\u30e0\u5e73\u621016(2004)\u5e74\u5ea6\u5831\u544a Proceedings of the 17th symposiumon Researches Using the Tandetron AMS System at Nagoya University in 2004\\\n\u65e5\u6642:\u5e73\u621017 (2005)\u5e741\u670824\u65e5(\u6708)\uff6425\u65e5(\u706b) \u4f1a\u5834:\u540d\u53e4\u5c4b\u5927\u5b66\u30b7\u30f3\u30dd\u30b8\u30aa\u30f3 Date:January 24th and 25th, 2005 Place:Nagoya University Symposion Hall", "subitem_description_type": "Other"}]}, "item_9_identifier_registration": {"attribute_name": "ID\u767b\u9332", "attribute_value_mlt": 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