{"_buckets": {"deposit": "1f316026-1cf4-4f29-b002-52036cc08de3"}, "_deposit": {"id": "11896", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "11896"}, "status": "published"}, "_oai": {"id": "oai:soar-ir.repo.nii.ac.jp:00011896", "sets": ["1169:1170"]}, "item_6_alternative_title_1": {"attribute_name": "\u305d\u306e\u4ed6\uff08\u5225\u8a00\u8a9e\u7b49\uff09\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "Detailed reconstruction of paleoclimate based on total organic carbon proxy of lake sediment during the past 160 ka in central Japan"}]}, "item_6_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2009-07", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "7", "bibliographicPageEnd": "356", "bibliographicPageStart": "344", "bibliographicVolumeNumber": "115", "bibliographic_titles": [{"bibliographic_title": "\u5730\u8cea\u5b66\u96d1\u8a8c"}]}]}, "item_6_description_20": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "A detailed reconstruction of paleoclimate over the past 160 ka has been achieved with a 20-40 year interval, based on the total organic carbon (TOC) and total nitrogen (TN) contents oflake sediments from Lake Nojiri and the Takano Formation, central Japan. The validity of the reconstruction is supported by an analysis of pollen grains from the same sediments. The result represents one of the most detailed and continuous reconstructions of paleoclimate for a land area in Japan during the late Quaternary. The reconstruction provides a key to our understanding of late Quaternary climate in Japan, because the studied sediments contain many widespread tephra marker layers,thereby enabling the correlation of the reconstructed paleoclimate with other areas in and around the Japanese Islands. The TOC content of lake sediment is controlled mainly by the biological productivity of lake water (aquatic organic matter) and the input rate of organic matter from land areas (terrestrial organic matter), as well as the degree of decomposition after deposition. Biological productivity appears to be the main controlling factor in lakes within mid-latitude Japan that contain silt- and clay-rich sediments. Short and long-term fluctuations in TOC are well correlated with the marine\u3000\u03b4\u00b9\u2078O\u3000 pattern of SPECMAP and  with \u03b4\u00b9\u2078O profiles from ice cores in  Greenland. The Validity of the paleoclimate reconstructed based on TOC is supported by the results of pollen analysis, although the pollen data have relatively low temporal resolution. Therefore, ln our reconstruction we can identify marine isotope stages (MIS) 1 to 6 and many of the interstadial events recognized in Greenland ice cores. A detailed comparison of the obtained TOC curve with the SPECMAP curve reveals a slight lag in the TOC peaks, which are typically recognized in the MIS 5b and 5d stages. This lag may reflect local factors specific to the Japanese Islands.", "subitem_description_type": "Abstract"}, {"subitem_description": "\u91ce\u5c3b\u6e56\u5e95\u5806\u7a4d\u7269\u304a\u3088\u3073\u5f8c\u671f\u66f4\u65b0\u4e16\u9ad8\u91ce\u5c64\u306eTOC\u542b\u6709\u7387\u3092\u6307\u6a19\u3068\u3057\u3066,\u904e\u53bb16\u4e07\u5e74\u9593\u306e\u4e2d\u90e8\u5c71\u5cb3\u5730\u57df\u306b\u304a\u3051\u308b\u6c17\u5019\u5909\u52d5\u306e\u5fa9\u5143\u3092\u8a66\u307f\u305f.\u307e\u305a, TOC\u542b\u6709\u7387\u306e\u5897\u6e1b\u304c\u82b1\u7c89\u7d44\u6210\u306e\u793a\u3059\u5bd2\u6696\u5909\u52d5\u3067\u88cf\u4ed8\u3051\u3089\u308c\u3066\u304a\u308a,\u6c17\u5019\u5909\u52d5\u306e\u6307\u6a19\u3068\u3057\u3066\u6709\u52b9\u3067\u3042\u308b\u3053\u3068\u3092\u305d\u308c\u305e\u308c\u3067\u78ba\u8a8d\u3057\u305f.\u6b21\u306b,\u305d\u308c\u305e\u308c\u3067\u6a19\u6e96\u5316\u3057\u305fTOC\u5909\u52d5\u66f2\u7dda\u3092\u5e83\u57df\u30c6\u30d5\u30e9DKP\u3092\u9375\u3068\u3057\u3066\u3064\u306a\u304e\u5408\u308f\u305b\u3066,\u904e\u53bb16\u4e07\u5e74\u9593\u306e\u8a73\u7d30\u306a\u5909\u52d5\u3092\u5fa9\u5143\u3057\u305f. 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