Terrestrial system response to North Atlantic climate oscillations during the last glacial cycle: high resolution loess-palaeosol sequences from Remagen-Schwalbenberg (Middle Rhine Valley, Germany) - TerraClime

末次冰川周期期间陆地系统对北大西洋气候振荡的响应：来自雷马根-施瓦尔本贝格（德国中莱茵河谷）的高分辨率黄土-古土壤序列 - TerraClime

• 批准号: 337232800
• 负责人: Dr. Peter Fischer
• 金额: --
• 依托单位: Lehrstuhl für Geomorphologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/337232800?language=en
• 关键词: Terrestrial; system; response; North; Atlantic

Our understanding of climate variability and forcing during the Quaternary is largely derived from marine and ice core records. The response of terrestrial systems to climate change through time, by contrast, remains poorly defined. Nevertheless, understanding landscape response to climate variability is of critical importance: not only because we as people live on and interact with the land, but also because land interacts differently with the atmosphere than do the oceans and ice sheets. Consequently we must investigate the nature of feedbacks and forcings between terrestrial and atmospheric systems.The TERRACLIME project will investigate terrestrial system response to northern hemisphere climate change during the last glacial cycle (LGC), based on novel loess-palaeosol sequences (LPS) from Remagen-Schwalbenberg (Middle Rhine Valley, Germany). Pilot core REM 3A, conducted during preparatory studies, yields the thickest and most complete sequence of landscape response to palaeoclimate in Central and Western Europe, spanning much of the LGC. The records of profiles and cores from earlier studies were not as long and complete as the new core, and they lacked high resolution palaeoclimate reconstruction using state of the art methods now available, as well as reliable high resolution chronological frameworks.Systematic geophysical prospection of the Schwalbenberg area will be the base to identify the thickest deposits for a further key core and several screening cores. The TERRACLIME research design will yield an understanding of loess response to climate based on the catena principle; variabilities between different (key and screening) cores will enable us to decouple local, regional and supra-regional processes acting on the deposits and to elucidate the nature of loess deposition and formation in three dimensions.TERRACLIME will combine established methods (sedimentology, mineralogy and environmental magnetism) with recently developed proxy approaches (inorganic and stable isotope geochemistry, and biomarker analyses). LPS core analyses will provide data on past climatic conditions, sedimentation and post-sedimentary alteration processes, and vegetation history. Geochemical data generated will furthermore be used to investigate possible shifts in sediment source areas through time.Pivotal to the project is high resolution luminescence dating to establish a reliable and independent age model for the Schwalbenberg sequences. The resulting age model, based on paired quartz OSL and polymineral pIR-IRSL dating, will facilitate direct comparison of the new Schwalbenberg LPS with regional and global palaeoclimate archives to elucidate terrestrial response to North Atlantic climate oscillations during the LGC. Synchronicity or lags between the age models from the different archives will further improve our understanding of the links between marine, ice core and terrestrial recorders of climate change in the northern hemisphere over the LGC.

我们对第四纪气候变率和强迫的理解主要来自海洋和冰芯记录。相比之下，陆地系统随着时间的推移对气候变化的反应仍然很不明确。然而，了解地貌对气候变化的反应至关重要：这不仅是因为我们人类生活在陆地上并与陆地互动，而且还因为陆地与大气的互动方式不同于海洋和冰盖。TERRACLIME项目将根据Remagen-Schwalbenberg（德国中莱茵河河谷）新的黄土-古土壤序列（LPS），研究末次冰期循环（LGC）期间陆地系统对北方半球气候变化的响应。试验核心REM 3A，在筹备研究期间进行，产生最厚和最完整的序列的景观响应古气候在中欧和西欧，跨越大部分的LGC。早期研究的剖面和岩心记录不像新岩心那样长和完整，它们缺乏使用现有最先进方法进行的高分辨率古气候重建，以及可靠的高分辨率年代框架，Schwalbenberg地区的系统地球物理勘探将成为确定最厚矿床的基础，以进一步确定关键岩心和几个筛选岩心。TERRACLIME研究设计将根据连锁原理了解黄土对气候的反应;差异性（关键和筛选）岩心将使我们能够分离作用于沉积物的局部、区域和超区域过程，并从三维角度阐明黄土沉积和形成的性质。TERRACLIME将联合收割机结合已建立的方法（沉积学、矿物学和环境磁学）与最近开发的替代方法（无机和稳定同位素地球化学和生物标志物分析）相结合。LPS岩心分析将提供关于过去气候条件、沉积和沉积后蚀变过程以及植被历史的数据。所产生的地球化学数据将进一步用于调查沉积物源区随时间的可能变化。该项目的后续工作是高分辨率发光测年，以建立Schwalbenberg序列的可靠和独立的年龄模型。由此产生的年龄模型，成对的石英OSL和多矿物pIR-IRSL测年的基础上，将有助于直接比较新的Schwalbenberg LPS与区域和全球的古气候档案，以阐明陆地响应北大西洋气候振荡在LGC。来自不同档案的年龄模型之间的同步性或滞后性将进一步提高我们对LGC上北方半球气候变化的海洋、冰芯和陆地记录器之间联系的理解。

项目成果

Combining Inorganic and Organic Carbon Stable Isotope Signatures in the Schwalbenberg Loess-Palaeosol-Sequence Near Remagen (Middle Rhine Valley, Germany)

雷马根附近施瓦尔本贝格黄土-古土壤序列中无机和有机碳稳定同位素特征的结合（德国中莱茵河谷）

• DOI: 10.3389/feart.2020.00276
• 发表时间: 2020
• 作者: Vinnepand;Fischer;Fitzsimmons;Thornton;Fiedler
• 通讯作者: Fiedler

Luminescence Sensitivity of Rhine Valley Loess: Indicators of Source Variability?

• DOI: 10.3390/quat5010001
• 发表时间: 2021-12
• 期刊: Quaternary
• 影响因子: 2.3
• 作者: K. Fitzsimmons;Zoran M. Perić;Maike Nowatzki;S. Lindauer;M. Vinnepand;C. Prud’homme;A. K. Dave

Millennial-scale terrestrial ecosystem responses to Upper Pleistocene climatic changes: 4D-reconstruction of the Schwalbenberg Loess-Palaeosol-Sequence (Middle Rhine Valley, Germany)

• DOI: 10.1016/j.catena.2020.104913
• 发表时间: 2021-01-01
• 期刊: CATENA
• 影响因子: 6.2
• 作者: Fischer, Peter;Joeris, Olaf;Voett, Andreas
• 通讯作者: Voett, Andreas