徐涛玉, 石学法, 刘升发, 乔淑卿, 杨刚, 王国庆, 王昆山, 王旭晨. 近2 ka来东海内陆架泥质沉积物颜色反射率特征及其古气候意义[J]. 海洋地质与第四纪地质, 2012, 32(6): 149-158. DOI: 10.3724/SP.J.1140.2012.06149
引用本文: 徐涛玉, 石学法, 刘升发, 乔淑卿, 杨刚, 王国庆, 王昆山, 王旭晨. 近2 ka来东海内陆架泥质沉积物颜色反射率特征及其古气候意义[J]. 海洋地质与第四纪地质, 2012, 32(6): 149-158. DOI: 10.3724/SP.J.1140.2012.06149
XU Taoyu, SHI Xuefa, LIU Shengfa, QIAO Shuqing, YANG Gang, WANG Guoqing, WANG Kunshan, WANG Xuchen. THE COLOR REFLECTANCE FEATURES OF THE SEDIMENTS IN MUD AREA ON THE INNER SHELF OF THE EAST CHINA SEA AND ITS PALEOCLIMATIC IMPLICATIONS FOR RECENT 2 ka[J]. Marine Geology & Quaternary Geology, 2012, 32(6): 149-158. DOI: 10.3724/SP.J.1140.2012.06149
Citation: XU Taoyu, SHI Xuefa, LIU Shengfa, QIAO Shuqing, YANG Gang, WANG Guoqing, WANG Kunshan, WANG Xuchen. THE COLOR REFLECTANCE FEATURES OF THE SEDIMENTS IN MUD AREA ON THE INNER SHELF OF THE EAST CHINA SEA AND ITS PALEOCLIMATIC IMPLICATIONS FOR RECENT 2 ka[J]. Marine Geology & Quaternary Geology, 2012, 32(6): 149-158. DOI: 10.3724/SP.J.1140.2012.06149

近2 ka来东海内陆架泥质沉积物颜色反射率特征及其古气候意义

THE COLOR REFLECTANCE FEATURES OF THE SEDIMENTS IN MUD AREA ON THE INNER SHELF OF THE EAST CHINA SEA AND ITS PALEOCLIMATIC IMPLICATIONS FOR RECENT 2 ka

  • 摘要: 以东海内陆架泥质区MZ01孔岩心的颜色反射率测试分析为基础,通过一阶导数、因子分析等方法提取了对气候变化具有指示意义的替代性指标,结合AMS14C年龄测试数据,建立了我国东部近2 ka以来高分辨率气候演化的时间序列。该序列显示,900AD是我国东部2 ka以来气候演化的关键转折点,900AD之后,气候明显变冷,冷暖波动频率高,但幅度较小。近2 ka以来,我国东部的气候演化大致经历了冷期(580AD以前)、暖期(580-900AD)、冷暖波动期(900-1460AD)、冷期(1460-1880AD)4个阶段,每一阶段内部都存在次一级区域性或全球性的冷暖波动。

     

    Abstract: A climatic proxy system is constructed on the basis of the color reflectance data of the core MZ01 using first derivative and factors analysis method, and a high-resolution climatic sequence is established with the support of AMS14C dating data for the past 2 ka.900AD is the key turning-point in the course of climate evolution.Climate became significantly cold with high-frequency but low amplitude temperature fluctuation right after 900AD.In the past 2 ka,the climate in East China has experienced four stages including a cold stage before 580AD,a warm stage between 580 and 900AD,a temperature fluctuation stage between 900 and 1460AD and a cold stage between 1460 and 1880AD.Each stage includes some secondary regional or global temperature fluctuations.

     

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