论文部分内容阅读
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。
Based on the study of carbon and oxygen isotopic composition, grain size and whole-rock 14C dating of 94-10 column-like planktonic foraminifera in the Nansha Islands, it was found that the Nansha Islands had experienced two obvious warming processes after the end of the last glacial period (About 12-11kaBP) and Ⅱ (about 10-8kaBP), of which event I may be a new celestial event. During the warming of the climate after the end of the last glacial period, the East Asian monsoon Evolution has the characteristics of instability and suddenness.