摘要
通过对南沙群岛海区94－10柱样浮游有孔虫碳氧同位素组成、粒度组成及全岩样14C测年的研究，发现南沙群岛海区在末次冰期结束后的转暖过程中发生了两次明显的气候回返事件，即事件Ⅰ（约12—11kaBP）和事件Ⅱ（约10—8kaBP），其中事件Ⅰ可能为新仙女木事件；在末次冰期结束后的气候转暖过程中，东亚古季风演化具有不稳定性和突发性的特点。
Some conclusions can be drawn from the studies on oxygen and carbon isotopes of planktonic foraminifera, sediment grain size and 14C ages of core 94-10.In tile course of paleoclimate changing warm after the last glacial period, two manifest cool events, event Ⅰ and event Ⅱ, are found in the Nansha Islands sea area of the South China Sea, their ages about 12-11 kyr BP and 10-8 kyr BP respechvely.Event Ⅰ may be the Younger poas event. Instability and abruptness are the characters of the East Asia Monsoon in the course.
出处
《热带海洋》
CSCD
1998年第4期14-20,共7页
关键词
南沙群岛
沉积物
碳氧同位素
浮游有孔虫
古气候
Nansha Islands sea area, sediment, Younger Dryas event, East Asia Monsoon, oxygen and carbon isotopes
