Late Holocene paleoenvironmental analysis from submarine cave deposits

海底洞穴沉积物的全新世晚期古环境分析

基本信息

  • 批准号:
    16340159
  • 负责人:
  • 金额:
    $ 5.57万
  • 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:
    2004
  • 资助国家:
    日本
  • 起止时间:
    2004 至 2006
  • 项目状态:
    已结题

项目摘要

We examined a sediment layer and surface sediments in a submarine limestone cave (31 m depth) on the fore-reef slope of Ie Island, off Okinawa mainland, Japan. In addition, oxygen isotope analysis was performed on the cavernicolous micro-bivalve Carditella iejimensis from both cored sediments and surface sediments, and the water temperature within the cave was recorded for nearly one year. These data lead to the following conclusions : 1) although the biotic and non-biotic environments within the cave have persisted for the past 5,000 years, the environmental conditions of the innermost cave area gradually spread to the entrance of the cave ; 2) the alternation of water masses within the cave is caused by the tidal cycle ; 3) the δ^<18>O-derived temperature of C. iejimensis indicates spring temperature at 30 m deep outside the cave ; 4) the δ^<18>O-derived temperature of C. iejimensis from cored sediments implies that there were two warmer intervals, at about AD 280 and AD 1050 ; 5) a sediment layer containing pumice grains (BC 440 ± 40 to AD 640 ± 80) was identified and named as Daidokutsu pumice. These suggest that submarine-cave sediments and oxygen isotope records of cavernicolous shells are a useful tool to reconstruct century-scale paleoenvironmental and climatic variability for the subtropical Okinawa Islands during the Holocene.
我们研究了沉积层和表层沉积物在一个海底石灰岩洞穴(31米深)的前礁斜坡的伊势岛,离开冲绳大陆,日本。此外,还对采自取心沉积物和表层沉积物的洞穴微双壳类Carditella iejimensis进行了氧同位素分析,并记录了近一年的洞穴水温。这些数据表明:1)洞穴内的生物和非生物环境在过去的5,000年里一直存在,但洞穴最深处的环境条件逐渐向洞口扩展; 2)洞穴内水团的交替是由潮汐循环引起的; 3)<18>C. iejimensis指示洞外30 m深处的春季温度; 4)<18>C.取芯沉积物中的iejimensis意味着有两个较温暖的时间段,大约在公元280年和公元1050年; 5)鉴定出含有浮岩颗粒(公元前440 ± 40至公元640 ± 80)的沉积层,并将其命名为Daidokutsu浮岩。这些表明,海底洞穴沉积物和洞穴贝壳的氧同位素记录是一个有用的工具,重建百年尺度的古环境和气候变化的亚热带冲绳在全新世。

项目成果

期刊论文数量(8)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Changes in cavernicolous bivalve assemblages and environments within a submarine cave in Okinawa Islands during the last 5,000 years
过去5000年来冲绳群岛海底洞穴内海绵状双壳类群落和环境的变化
沖縄県伊江島の海底洞窟堆積物から見つかった軽石散在層
冲绳县伊江岛海底洞穴沉积物中发现浮石散布层
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kishigami;Nobuhiro;James M. Savelle (eds.);北村晃寿
  • 通讯作者:
    北村晃寿
Discovery of sediment layer containing pumice grains in submarine cave sediment in coral reef of Okinawa Islands (in Japanese with English abstract).
冲绳群岛珊瑚礁海底洞穴沉积物中发现含有浮石颗粒的沉积层(日文,英文摘要)。
Potential of submarine-cave sediments and oxygen isotope composition of cavernicolous micro-bivalve as a late Holocene paleoenvironmental record
海底洞穴沉积物和海绵状微型双壳类动物氧同位素组成作为全新世晚期古环境记录的潜力
  • DOI:
  • 发表时间:
    2007
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kitamura;A.;Yamamoto;N.;Kase;T.;Ohashi;S.;Hiramoto;M.;Fukusawa;H.;Watanabe;T.;Irino;T.;Kojitani;H.;Shimamura;M.;Kawakami;I.
  • 通讯作者:
    I.
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KITAMURA Akihisa其他文献

KITAMURA Akihisa的其他文献

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{{ truncateString('KITAMURA Akihisa', 18)}}的其他基金

Evolution of life-history strategy and paleoclimate changes from an geochemical record of a cave-dwelling marine micro-bivalve.
从洞穴居住的海洋微生物双壳类的地球化学记录来看,生活史策略的演变和古气候变化。
  • 批准号:
    22540475
  • 财政年份:
    2010
  • 资助金额:
    $ 5.57万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Reconstruction of paleoceanographic variations of Kuroshio over the past 7,000 years from oxygen isotope ratio of the micro-bivalvia ound in a submarine cave
根据海底洞穴中微型双壳动物的氧同位素比重建黑潮近7000年来的古海洋变化
  • 批准号:
    19540492
  • 财政年份:
    2007
  • 资助金额:
    $ 5.57万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Impact of a 1℃ warming : paleoenvironmental studies of northern sea of Japan during
升温1℃的影响:日本北海古环境研究
  • 批准号:
    13640470
  • 财政年份:
    2001
  • 资助金额:
    $ 5.57万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Effects of warming daring a glacial-interglacial transition on the palaeogeography and macro aural assemblages on continental shelf in the Sea of Japan
冰川-间冰期转变期间的变暖对日本海大陆架古地理和宏观听觉组合的影响
  • 批准号:
    08454150
  • 财政年份:
    1996
  • 资助金额:
    $ 5.57万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)

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