High-resolution reconstruction of the paleoenvironmental changes since the Last Glacial by the analyses of highland moor deposits

通过高地沼泽沉积物分析高分辨率重建末次冰期以来的古环境变化

基本信息

  • 批准号:
    14380034
  • 负责人:
  • 金额:
    $ 5.31万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2002
  • 资助国家:
    日本
  • 起止时间:
    2002 至 2005
  • 项目状态:
    已结题

项目摘要

Five all-cored sediments were taken at the Ohnuma Moor in the northern part of Hyogo Prefecture, three of which were the oriented samples obtained by newly developed non-magnetic core samplers. Synthetic analyses of the core sediments were performed including petrologic analysis of tephra layers, AMS-^<14>C dating, pollen and diatom analyses, and physical measurements of lightness, grain size, loss on ignition, magnetic susceptibility, and paleomagnetic secular variation (PSV), to clarify the paleoenvironmental changes since the Last Glacial and the formative processes of the moor. More than 65-m thick deposits underlie the Ohnuma Moor. The upper part about 50-m thick is composed mainly of sand and gravels, while the finer sediments about 17-m thick, mainly of clay and peat, comprise the upper part containing six tephra layers of K-Ah, SUk, MsP, Sh, AT, and Nh. Based on the estimated eruption ages of K-Ah and AT and more than 30 AMS-^<14>C dates along with the results of diatom analysis, it is inferred that the Ohnuma Moor originated the depression formed by the large scale landslide at ca.41 ka cal.BP and has been developed as a mire between ca.32 and 29 ka cal.BP and after ca.13 ka cal.BP and as a wetland until ca.32 ka cal.BP and from ca.29 to 13 ka cal.BP. All measured physical properties show the cyclic changes with small amplitude for the time interval from 41 to 13 ka cal.BP without the air fall tephra horizons. The temporal changes are possible to reflect the global climatic changes named the Dansgaadrd-Oeschger Oscillations with Heinrich Events. The PSV can be reconstructed mainly for the period between 35 and 32 ka cal.BP, suggesting the effectiveness of the new sampling method. However, it is necessary to improve it because the core samples were disturbed especially at their uppermost and lowermost parts.
在兵库县北部的大沼沼地采集了5个全芯沉积物,其中3个为新开发的非磁芯取样器定向样品。通过对岩心沉积物的岩石学分析、AMS- <14>C测年、花粉和硅藻分析,以及亮度、粒度、燃失率、磁化率和古地磁长期变化(PSV)等物理测量,对末次冰期以来的古环境变化和摩尔的形成过程进行了综合分析。超过65米厚的沉积物在大沼沼泽下面。上部约50 m厚,主要由砂和砾石组成;上部约17 m厚,主要由粘土和泥炭组成,含有6层K-Ah、SUk、MsP、Sh、AT和Nh。根据估计的K-Ah和AT火山喷发年龄和30多个AMS-^<14>C年代以及硅藻分析结果,推断大沼沼地起源于ca.41 ka cal.BP大规模滑坡形成的洼地,在ca.32 ~ 29 ka cal.BP之间和ca.13 ka cal.BP之后发育为泥沼,在ca.32 ka cal.BP之前和ca.29 ~ 13 ka cal.BP之间发育为湿地。在41 ~ 13 ka cal.BP的时间间隔内,所有测量到的物性都表现出小幅度的周期性变化。时间变化可以反映全球气候变化,称为dansgaard - oeschger振荡与海因里希事件。在35 ~ 32 ka cal.BP范围内可以重构出PSV,表明了新采样方法的有效性。但是,由于岩心样品的上、下两部分受到较大的扰动,有必要对其进行改进。

项目成果

期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
近畿地方北部の中部更新統・福知山層のテフラの対比
近畿地区北部更新世中部和福知山地层的火山灰比较
Correlation of the tephra layers in the Middle Pleistocene Fukuchiyama Formation in the northern Kinki District, West Japan.
日本西部近畿地区北部中更新世福知山组火山灰层的对比。
Correlation and AMS-^<14>C dating of the late Pleistocene tephra layers in the Ohnuma Moor deposits in the eastern part of the Chugoku Mountains, Western Japan.
日本西部中国山脉东部大沼沼泽沉积物中更新世晚期火山灰层的对比和AMS-^ 14 C测年。
大山テフラの岩石記載的特徴と大山最下部テフラ層中のテフラの対比
大山火山灰与大山最底层火山灰岩相特征比较
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    加藤茂弘;山下 透;檀原 徹
  • 通讯作者:
    檀原 徹
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KATO Shigehiro其他文献

対象格と場所格の連続性
宾语和处所格的连续性
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    KATO;Shigehiro;加藤 重広;加藤 重広;KATO Shigehiro;KATO Shigehiro;加藤 重広;加藤 重広;加藤 重広;加藤 重広;加藤 重広
  • 通讯作者:
    加藤 重広
日本語における数量詞遊離と動作量の意味的関係
日语量词释放与动作量的语义关系
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    KATO;Shigehiro;加藤 重広;加藤 重広;KATO Shigehiro;KATO Shigehiro;加藤 重広
  • 通讯作者:
    加藤 重広
Fundamental Problems on / of Pragmatics
语用学的基本问题
『日本語文法 入門ハンドブック』
《日语语法入门手册》
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    KATO;Shigehiro;加藤 重広;加藤 重広;KATO Shigehiro;KATO Shigehiro;加藤 重広;加藤 重広;加藤 重広;加藤 重広;加藤 重広;加藤 重広;加藤 重広;加藤 重広;加藤 重広;加藤 重広
  • 通讯作者:
    加藤 重広
Semantic Relation between Quantifier Floating and Action Quantity in Japanese
日语量词浮动与动作量的语义关系

KATO Shigehiro的其他文献

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{{ truncateString('KATO Shigehiro', 18)}}的其他基金

Fundamental studies for proper utilization of linguistic data preserved by retired linguists
正确利用退休语言学家保存的语言数据的基础研究
  • 批准号:
    18H00661
  • 财政年份:
    2018
  • 资助金额:
    $ 5.31万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Educational application of earthquake faults to mitigate natural disaster risk
地震断层的教育应用以减轻自然灾害风险
  • 批准号:
    24650599
  • 财政年份:
    2012
  • 资助金额:
    $ 5.31万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Theoretical Studies on Lexical and constructional Implicatures: fromAnalysis and Description of the Japanese Lexicon and Constructions
词汇和结构含义的理论研究——来自日语词汇和结构的分析和描述
  • 批准号:
    22520382
  • 财政年份:
    2010
  • 资助金额:
    $ 5.31万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Tectonics and geomorphologic developments since the middle Pleistocene in and around the Kinki Triangle, western Japan
日本西部近畿三角及其周边地区中更新世以来的构造和地貌发展
  • 批准号:
    20500902
  • 财政年份:
    2008
  • 资助金额:
    $ 5.31万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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  • 批准号:
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合作研究:揭示末次冰期期间北美冰盖动力学和美国大西洋中部沿线区域海平面变化
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    $ 5.31万
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