夏胜俊, 谢志仁, 王文. 上海浦东YA孔微量元素变化与历史时期水体盐度波动[J]. 水科学进展, 1999, 10(4): 411-417.
引用本文: 夏胜俊, 谢志仁, 王文. 上海浦东YA孔微量元素变化与历史时期水体盐度波动[J]. 水科学进展, 1999, 10(4): 411-417.
XIA Sheng-jun, XIE Zhi-ren, WANG Wen. Water Salinity Fluctuations in Historical Period Reflected by the Change of Trace Elements in Bore YA in Pudong,Shanghai[J]. Advances in Water Science, 1999, 10(4): 411-417.
Citation: XIA Sheng-jun, XIE Zhi-ren, WANG Wen. Water Salinity Fluctuations in Historical Period Reflected by the Change of Trace Elements in Bore YA in Pudong,Shanghai[J]. Advances in Water Science, 1999, 10(4): 411-417.

上海浦东YA孔微量元素变化与历史时期水体盐度波动

Water Salinity Fluctuations in Historical Period Reflected by the Change of Trace Elements in Bore YA in Pudong,Shanghai

  • 摘要: 浦东YA孔浅地层剖面中微量元素变化的分析结果表明,B含量和B/Ga,Sr/Ba,Cl/Br比值是反映古水体盐度的灵敏指示剂,据此建立的YA孔古盐度指数变化曲线显示,该地区近数千年来曾发生过多次百年尺度的盐度波动事件,并可能与同期海面波动引起的海水进退直接相关.这一情况说明,滨海地区沉积地层中的微量元素是海面变化研究的良好的代用指标.

     

    Abstract: The analys is of the change of trace element content in the upper part of Bore-YA indicat es that the content of B and the ratio of B/Ga,Sr/Ba and Cl/Br are sensitive in dicators of paleo-water salinity.The Bore-YA palaeo-salinity index curve shows,several one-hundred-scale salinity fluctuations occurred in this a rea in the last several thousand years,and they are probably relevant to sea-water inundations and recessions resulted from concurrent sea-level fluctuations.The fact indicates that trace elements in sedimental strata in the coastal area are good proxy for conventional sea-level changing indicators.

     

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