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南海北部沉积物中浮游有孔虫Globigerinoides ruber壳体氧同位素指示的冬季表层海水温度

许慎栋 陈文煌 邓文峰 贾国东

许慎栋, 陈文煌, 邓文峰, 贾国东. 南海北部沉积物中浮游有孔虫Globigerinoides ruber壳体氧同位素指示的冬季表层海水温度[J]. 海洋地质与第四纪地质, 2016, 36(2): 101-107. doi: 10.16562/j.cnki.0256-1492.2016.02.012
引用本文: 许慎栋, 陈文煌, 邓文峰, 贾国东. 南海北部沉积物中浮游有孔虫Globigerinoides ruber壳体氧同位素指示的冬季表层海水温度[J]. 海洋地质与第四纪地质, 2016, 36(2): 101-107. doi: 10.16562/j.cnki.0256-1492.2016.02.012
XU Shendong, CHEN Wenhuang, DENG Wenfeng, JIA Guodong. WINTER SURFACE SEAWATER TEMPERATURE IN THE NORTHERN SOUTH CHINA SEA INDUCED FROM TEMPERATURE INDEX OF SHELL OXYGEN ISOTOPE OF GLOBIGERINOIDES RUBER[J]. Marine Geology & Quaternary Geology, 2016, 36(2): 101-107. doi: 10.16562/j.cnki.0256-1492.2016.02.012
Citation: XU Shendong, CHEN Wenhuang, DENG Wenfeng, JIA Guodong. WINTER SURFACE SEAWATER TEMPERATURE IN THE NORTHERN SOUTH CHINA SEA INDUCED FROM TEMPERATURE INDEX OF SHELL OXYGEN ISOTOPE OF GLOBIGERINOIDES RUBER[J]. Marine Geology & Quaternary Geology, 2016, 36(2): 101-107. doi: 10.16562/j.cnki.0256-1492.2016.02.012

南海北部沉积物中浮游有孔虫Globigerinoides ruber壳体氧同位素指示的冬季表层海水温度


doi: 10.16562/j.cnki.0256-1492.2016.02.012
详细信息
    作者简介:

    许慎栋(1987-),男,主要从事海洋沉积和生物地球化学研究,E-mail:sdxu6379@163.com

  • 基金项目:

    国家重点基础研究发展计划项目(2009CB421206)

  • 中图分类号: P736.22

WINTER SURFACE SEAWATER TEMPERATURE IN THE NORTHERN SOUTH CHINA SEA INDUCED FROM TEMPERATURE INDEX OF SHELL OXYGEN ISOTOPE OF GLOBIGERINOIDES RUBER

More Information
  • 摘要: 有孔虫壳体的氧同位素值(δ18O)是由其生长时海水δ18O和温度决定的,在海水δ18O已知的情况下,可以由壳体的δ18O值估算海水温度。本文以南海北部沿岸地区9个站位的柱状沉积物中浮游有孔虫Globigerinoides ruber为研究对象,测试了其壳体的δ18O值。分别以相应站点夏季与冬季表层海水的实测δ18O值代入温度公式,估算了对应的夏季与冬季的海水温度值。然后把计算结果与World Ocean Atlas (WOA)数据库相应站点的海水温度数据作比较。结果表明,计算出的夏季海水温度与WOA的夏季温度有较大差别,而计算出的冬季海水温度则与WOA的冬季海水温度基本相当。这说明δ18Oruber记录的是该区域冬季表层海水的温度,此区域内G.ruber这一属种的生产力和沉积通量在东亚冬季风盛行期间出现了最高值。
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南海北部沉积物中浮游有孔虫Globigerinoides ruber壳体氧同位素指示的冬季表层海水温度

doi: 10.16562/j.cnki.0256-1492.2016.02.012
    作者简介:

    许慎栋(1987-),男,主要从事海洋沉积和生物地球化学研究,E-mail:sdxu6379@163.com

基金项目:

国家重点基础研究发展计划项目(2009CB421206)

  • 中图分类号: P736.22

摘要: 有孔虫壳体的氧同位素值(δ18O)是由其生长时海水δ18O和温度决定的,在海水δ18O已知的情况下,可以由壳体的δ18O值估算海水温度。本文以南海北部沿岸地区9个站位的柱状沉积物中浮游有孔虫Globigerinoides ruber为研究对象,测试了其壳体的δ18O值。分别以相应站点夏季与冬季表层海水的实测δ18O值代入温度公式,估算了对应的夏季与冬季的海水温度值。然后把计算结果与World Ocean Atlas (WOA)数据库相应站点的海水温度数据作比较。结果表明,计算出的夏季海水温度与WOA的夏季温度有较大差别,而计算出的冬季海水温度则与WOA的冬季海水温度基本相当。这说明δ18Oruber记录的是该区域冬季表层海水的温度,此区域内G.ruber这一属种的生产力和沉积通量在东亚冬季风盛行期间出现了最高值。

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