Stable isotopes from peat profiles from the western Himalayas (India as indicators of westerlies and monsoon variability during the Holocene

来自喜马拉雅山西部泥炭剖面的稳定同位素（印度作为全新世期间西风带和季风变化的指标）

• 批准号: 159007801
• 负责人: Dr. Andreas Lücke
• 金额: --
• 依托单位: Wadia Institute of Tropical Meteorology
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/159007801?language=en
• 关键词: Stable; isotopes; peat; profiles; western

This project proposes multiparameter investigations on modern mires and Holocene peat profiles in the Himalayan region. The main focus will be laid on the extraction of plant cellulose and the investigation of the carbon, oxygen and hydrogen isotope composition to gain insights into the climatic drivers of mire dynamics. The aims of the project are (i) to identify the drivers of the moisture balance of the investigated mires, (ii) to characterize differing sensitivities of various proxies e.g. pollens, microfossils, isotopes and biomarkers to different components of the climate system (temperature, hydrology), (iii) to reconstruct the low to medium-frequency climate variability during the Holocene and (iv) to infer the role and the interplay of the summer monsoon and the westerlies in regional precipitation. The feasibility of using the inorganic component of the peat as an indicator of the catchment area processes and aeolian input – both of which are related to climate changes - will also be explored. The research approach to reach these goals is a twofold one. A study of the existing mire systems will establish an understanding of the mire dynamics under modern conditions. This knowledge will be essential for the interperation of peat cores during the second phase. The data obtained from the peat archive will be integrated into the HIMPAC network and critically reviewed with reconstructions gained from other archives in the same/nearby regions. The ultimate goal is to obtain a concise picture of Holocene monsoon variability for the Western Himalayas.

该项目提出了对喜马拉雅地区现代米尔斯和全新世泥炭概况的多参数投资。主要重点将放在植物纤维素的提取以及碳，氧和氢同位素组成的投资上，以洞悉米尔动力学的气候驱动因素。该项目的目的是（i）确定所研究mire的水分平衡的驱动因素（ii），以表征各种代理的不同灵敏度，例如花粉，微化石，同位素和生物标志物对气候系统（温度，水文学）的不同组成部分，（III）重建全新世期间的低至中频气候变化，以推断夏季蒙斯和西方人在区域降水中的作用和相互作用的作用和相互作用。还将探索使用果皮的无机组件作为集水区域过程和风化式输入的指标（两者都与气候变化有关）的可行性。实现这些目标的研究方法是双重目标。对现有泥泥系统的研究将在现代条件下建立对泥泥动态的理解。这些知识对于在第二阶段的果皮岩心的相互作用至关重要。从峰值存档获得的数据将集成到HIMPAC网络中，并通过从同一/附近地区的其他档案中获得的重建进行严格审查。最终目标是获得西部喜马拉雅山脉全新世季风可变性的简洁图片。