内蒙古中东部达里湖水文与全新世东亚季风变化

来自东亚季风北缘的湖泊记录发现全新世季风降水变化的相互矛盾。为了综合全面的考虑东亚季风的变化，对内蒙古中东部达里湖DL04岩芯进行了有机碳和无机碳总浓度的分析。数据显示达里湖在全新世早期（11, 500-7, 600 cal，BP）达到最高水位。中全新世（7, 600-3, 450 cal，BP）的特点是湖水水位剧烈波动，三个较低水位的湖泊间隔分别为6, 600-5, 850, 5, 100-4, 850和4, 450-3, 750 cal。在全新世晚期（目前为3, 450 cal BP），湖泊呈现出一股萎缩趋势，在3, 150-2, 650, 1, 650-1, 150和550-200 cal BP的三段中出现最低水平。我们推断全新世早期将会产生湖泊的扩张。Lacustrine records from the northern fringe of the East Asian monsoon region reveal conflicting Holocene monsoon precipitation changes. To comprehensively investigate the variations of the East Asian monsoon, we analyzed the total concentrations of organic and inorganic carbon from the DL04 sediment core of Dali Lake in central-eastern Inner Mongolia. Data show that Dali Lake reached its highest water level during the early Holocene (11,500–7,600 cal BP). The mid-Holocene (7,600–3,450 cal BP) was marked by dramatic fluctuations in lake levels, with three intervals of relatively low water levels occurring at 6,600–5,850 cal BP, 5,100–4,850 cal BP, and 4,450–3,750 cal BP, respectively. In the late Holocene (3,450 cal BP to present), the lake exhibited an overall shrinking trend, with its lowest water levels recorded during three intervals: 3,150–2,650 cal BP, 1,650–1,150 cal BP, and 550–200 cal BP. We infer that the early Holocene was characterized by lake expansion.

搜集汇总

背景与挑战

背景概述

该数据集研究了内蒙古中东部达里湖在全新世期间的水文变化与东亚季风的关系，通过分析DL04岩芯的有机碳和无机碳总浓度，揭示了湖泊水位在不同时期的变化特征。数据集包含古气候数据，文件格式为XLSX，存储容量为765.45 KB。