Late Glacial Climate Record of Midwestern United States from the Hydrogen Isotope Ratio of Lake Organic Matter
Late Glacial Climate Record of Midwestern United States from the Hydrogen Isotope Ratio of Lake Organic Matter
复制标题
湖泊有机质氢同位素比记录的美国中西部晚冰期气候
作者：
R. Krishnamurthy;K. Syrup;M. Baskaran;A. Long
从密歇根州西南部卡拉马祖（Kalamazoo）的一个湖芯提取的有机物分析中获得的氢同位素时间序列揭示了过去12000年里四个不同的同位素阶段，这些阶段可以用寒冷和温暖、干燥气候之间的振荡来解释。其中最显著的是距今12000年至9000年的冷期，距今8500年至2000年的暖干期，距今2000年至1000年的冷期，以及距今1000年以来的变暖趋势。
A hydrogen isotope time series obtained from an analysis of organic matter extracted from a lake core in Kalamazoo, southwestern Michigan, reveals four distinct isotope stages within the last 12,000 years that can be interpreted in terms of oscillations between cold and warm, dry climates. The most dramatic are a cold phase between 12,000 and 9000 years before present (B.P.), a warm, dry period between 8500 and 2000 years B.P., a cold period between 2000 and 1000 years B.P., and a warming trend since 1000 years B.P. The warming trend of the last 1000 years is comparable in magnitude to the mid-Holocene warm phase.