冯钰婷,彭诗云,谢辉,孔德明,赵辉

• 1:广东海洋大学海洋与气象学院
• 2:广东省近海海洋变化与灾害预警重点实验室

摘要(Abstract)：

【目的】研究磁化率在亚洲季风区河口海岸环境中的变化及其指示意义。【方法】利用珠江口沉积物柱状样HKUV16,结合放射性碳定年,重建近8 000 a来沉积物的磁化率变化。【结果】距今8 000~3 000 a磁化率呈现下降趋势,表明随着东亚夏季风减弱,输送到珠江口的陆源沉积物减少。而从距今2 500 a开始,HKUV16磁化率显著上升,在距今400 a达到最大2 700×10~(-6)SI。【结论】该变化趋势与近2 000 a以来珠江流域人类活动的增加以及夏季风的变强一致,近2 000 a来人类活动对珠江口环境的影响已逐渐超过了夏季风等自然因素带来的变化。

关键词(KeyWords)： 珠江口;磁化率;夏季风;环境演变

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学青年基金(41606070);; 广东海洋大学博士启动基金(R17011);广东海洋大学创新强校项目(GDOU2014050201);; 广东省自然科学基金(2016A030310331)

作者(Author): 冯钰婷,彭诗云,谢辉,孔德明,赵辉

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