海洋地质与第四纪地质2023，Vol.43Issue(6)：103-111,9.DOI:10.16562/j.cnki.0256-1492.2023010101
末次冰盛期山东半岛高分辨率气候环境变化
High resolution climatic and environmental changes in Shandong Peninsula during the last glacial maximum
摘要
Abstract
The last glacial maximum is the most cold-dry period on the Earth's surface since the last glaciation.We reconstructed high-resolution summer monsoon changes over the Shandong Peninsula during the period of 23.2～18.8 ka using precisely-dated high-resolution oxygen and carbon isotopes(δ18O and δ13C).Results show that the summer monsoon climate in the last glacial maximum in Shandong Peninsula had significant millennial scale fluctuations,and REDFIT analysis shows a significant 2.2 ka cycle in both oxygen and carbon isotopes,which was in a cold-dry state in general,and can be subdivided into four stages,namely,cold and dry(23.2～22 ka),relatively warm and wet(22～21 k),cold and dry(21～19 ka),and relatively warm and wet(21～19 ka).The newly obtained δ18O record is generally similar to other records of stalagmite δ18O from monsoonal China,as well as the stalagmite δ18O records from northern Borneo in the Western Pacific Warm Pool(WPWP).The climate and environment changes in the WPWP might have exerted a substantial impact on summer monsoon climate over the Shandong Peninsula during the last glacial maximum.It is speculated that temperature change at sea surface of WPWP affected the atmospheric circulation and Kuroshio,which should be the main mechanism sending climate and environment signals from low latitude to middle-high latitude zones in the northern hemisphere.关键词
石笋/氧-碳同位素/夏季风/西太平洋暖池/黑潮/末次冰盛期/山东半岛Key words
stalagmite/oxygen and carbon isotope/summer monsoon/Western Pacific Warm Pool/the Kuroshio/last glacial maximum/Shandong Peninsula分类
天文与地球科学引用本文复制引用
于溪川,青芷仪,周厚云..末次冰盛期山东半岛高分辨率气候环境变化[J].海洋地质与第四纪地质,2023,43(6):103-111,9.基金项目
国家自然科学基金"川东北石笋铀含量及同位素组成的控制机制与古降水指示意义"(41473093),"14-15世纪东南亚严重干旱在华南陆地地区的表现与意义"(41271212) （41473093）
