论文部分内容阅读
对青藏高原地区20多个有12 kaBP前后测年数据的湖泊或古湖盆的古湖岸线、古湖沉积物以及指示湖水盐度变化的古气候代用指标进行了较系统分析,结果表明青藏高原及其毗邻的中国西北地区的古湖面在14～11 kaBP冰消期具有明显回升现象,以冰川融水补给为主的湖泊湖面涨幅往往超过全新世最宜期.12 kaBP前后温湿的气候波动在青藏高原甚至全中国是普遍存在的,可与欧洲和格陵兰冰芯记录到的Bolling和Allerod暖期对比,表明B/A事件不只是北大西洋的区域现象.
Based on a systematic analysis of more than 20 lakes or ancient lake basins along the Qinghai-Tibet Plateau with more than 12 kaBP dating data, ancient lake sediments and paleoclimate proxy indicators indicating salinity changes of the lake, the results show that the Tibetan Plateau And its neighboring ancient Northwest China had a clear rebound in the 14 ~ 11 ka BP ice-off period, and the increase of lakes and lakes mainly dominated by glacier melt recharge often exceeded the optimum period of the Holocene. The temperature and humidity fluctuated around 12 kaBP Comparisons with the Bolling and Allerod warm periods recorded in the ice cores of Europe and Greenland were common across the Tibetan Plateau and even throughout China, indicating that the B / A event is not just a regional phenomenon in the North Atlantic.