Reconstruction of decadal to orbital-scale climate variability during Marine Isotope Stage 9 using precisely dated multi-proxy speleothem records from Central Europe – Part II

使用来自中欧的精确日期多代理洞穴记录重建海洋同位素阶段 9 期间十年至轨道尺度的气候变化 - 第二部分

基本信息

项目摘要

Reconstruction of climate variability during previous interglacials as well as precise determination of their timing and duration provides important information about our climate system. Marine Isotope Stage (MIS) 9 (340,000-280,000 years BP) is a particularly important interglacial in this context because it shows the highest preindustrial atmospheric CO2 and CH4 concentrations of the last 800,000 years.In the framework of the original project, we precisely date five stalagmites from Dechen Cave (western Germany). Since Dechen Cave is located in a region with permafrost during glacial times, speleothem growth within the cave is very sensitive to warmer and wetter climate conditions. Precise dating of the growth phases of the speleothems thus enables precise determination of the timing and duration of MIS 9 and its sub-stages. In addition, we generate high-resolution δ13C and δ18O values as well as trace element records, which will result in a replicated, precisely dated multi-proxy record completely covering MIS 9.Unfortunately, the original project was severely delayed due to several reasons (construction work in the clean laboratory, several problems with the newly installed MC-ICPMS, and in particular the global COVID-19 pandemic). As a result, the analyses outlined in the original proposal could not be conducted as intended and were delayed by at least one year. Therefore, both the dating and the proxy analyses of the speleothems could not be finished in the scheduled time frame, and the interpretation of the dataset in terms of past climate variability has so far been impossible.
重建前几次间冰期的气候变率,以及精确确定其时间和持续时间,为我们的气候系统提供了重要信息。海洋同位素阶段(MIS)9(距今340,000 - 280,000年)是一个特别重要的间冰期,因为它显示了过去800,000年来工业化前大气中最高的CO2和CH 4浓度。由于德陈洞位于冰川时期的永久冻土区,洞穴内的洞穴沉积物生长对温暖和潮湿的气候条件非常敏感。因此,洞穴沉积物生长阶段的精确定年能够精确确定MIS 9及其子阶段的时间和持续时间。此外,我们还生成了高分辨率的δ 13 C和δ 18 O值以及微量元素记录,这将产生一个完全覆盖MIS 9的复制的、精确标注日期的多代理记录。不幸的是,由于几个原因(洁净实验室的建设工作、新安装的MC-ICPMS的几个问题,特别是全球COVID-19大流行),最初的项目被严重推迟。因此,原提案中概述的分析无法按计划进行,并至少推迟了一年。因此,洞穴沉积物的定年和代用分析都无法在预定的时间范围内完成,而且迄今为止无法根据过去的气候变化对数据集进行解释。

项目成果

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Professor Dr. Denis Scholz其他文献

Professor Dr. Denis Scholz的其他文献

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{{ truncateString('Professor Dr. Denis Scholz', 18)}}的其他基金

Isotope-geochemical Palaeoclimatology/Speleothem Research
同位素地球化学古气候学/洞穴沉积学研究
  • 批准号:
    413462667
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Heisenberg Grants
Evaluation of the potential of speleothems for reconstruction of (short-term) phases of extreme climate
评估洞穴洞穴重建极端气候(短期)阶段的潜力
  • 批准号:
    286891953
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Isotope Geochemical Palaeoclimatology/Speleothem Research
同位素地球化学古气候学/洞穴沉积学研究
  • 批准号:
    264761838
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Heisenberg Professorships
Reconstruction of tropical rainfall variability in the Caribbean during the last glacial period (115,000 - 12,000 ka)
末次冰河期(115,000 - 12,000ka)加勒比地区热带降雨变化的重建
  • 批准号:
    231855229
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Multi-proxy reconstruction of Holocene and Late Glacial climate variability using precisely dated speleothems from the Herbstlabyrinth, central Germany
使用来自德国中部 Herbstlabyrinth 的精确年代的洞穴化石对全新世和晚冰期气候变化进行多代理重建
  • 批准号:
    204074792
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Application of Laser Ablation Multi Collector Inductively Coupled Plasma Mass Spectrometry (LA MC ICPMS) for 230Th/U-dating of speleothems and paleoclimate reconstruction
激光烧蚀多接收器电感耦合等离子体质谱 (LA MC ICPMS) 在洞穴生物 230Th/U 定年和古气候重建中的应用
  • 批准号:
    75875953
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Fellowships
Quantitative climate reconstruction for MIS 3 in Central Europe based on multi-proxy data from precisely dated speleothems (flowstones) from Bleßberg Cave, Germany
基于来自德国布莱伯格洞穴精确年代的洞穴沉积物(流石)的多代理数据,对中欧 MIS 3 进行定量气候重建
  • 批准号:
    449287287
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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