CAJ | 학술논문

对位于海南岛南部陆架的 S20孔沉积物进行了岩性、AMS14C 年代、粒度和微量元素分析，提取了东亚季风演化的代用指标，初步探讨了该沉积区蕴含的亚洲季风演化信息。结果表明，近4400 a以来， S20孔研究区受相对稳定的水动力条件控制。主要富集于相对粗粒和细粒物质的Zr/Rb陆源元素比值和<19μm细粒敏感粒度组分平均粒径可以作为冬季沿岸流和东亚冬季风强度的代用指标。二者与东海内陆架PC-6孔以及南海17940孔海水表层温度变化表现出良好的相似性，说明中国东南部不同地区季风代用指标揭示出的东亚冬季风演化具有一致性。因此，相对于陆地和深海而言，南海陆架区沉积物中同样蕴含着丰富的季风演化信息，后续高分辨率研究工作亟待开展。
대위우해남도남부륙가적 S20공침적물진행료암성、AMS14C 년대、립도화미량원소분석，제취료동아계풍연화적대용지표，초보탐토료해침적구온함적아주계풍연화신식。결과표명，근4400 a이래， S20공연구구수상대은정적수동력조건공제。주요부집우상대조립화세립물질적Zr/Rb륙원원소비치화<19μm세립민감립도조분평균립경가이작위동계연안류화동아동계풍강도적대용지표。이자여동해내륙가PC-6공이급남해17940공해수표층온도변화표현출량호적상사성，설명중국동남부불동지구계풍대용지표게시출적동아동계풍연화구유일치성。인차，상대우륙지화심해이언，남해륙가구침적물중동양온함착봉부적계풍연화신식，후속고분변솔연구공작극대개전。
Lithology, AMS14C dating, grain-size and trace element analysis were carried out for Core S20, which was retrieved from the continental shelf in the northern South China Sea (SCS). The monsoonal proxies were in-vestigated and the evolution history of East Asian monsoon was discussed in this paper. The results show that since 4 400 a BP, the hydrodynamic conditions in the study area are relatively stable. The Zr/Rb ratio of which enriched mainly in the relatively coarse and fine materials and mean grain-size (MGS) of the finer population are sensitive to the strength of the coastal current, and could be adopted to rebuild the evolution history of the East Asian winter monsoon (EAWM). Both of the Zr/Rb ratio and the finer population MGS correspond well to the sedimentary re-cord of Core PC-6 on the inner shelf of the East China Sea, and sea-surface temperature of Core 17940 from the northern slope of the SCS. This similarity indicates the consistency of EAWM evolution in different areas of the southeast China. Compared with the land and deep-sea proxies, the sediments in the continental shelf area also contain a wealth of information on the Asian monsoon evolution. Therefore, more research with higher resolution need carry out urgently.