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Timescales of sediment dynamics, climate and topographic change in mountain landscapes (SedyMONT)

山地景观中沉积物动态、气候和地形变化的时间尺度 (SedyMONT)

基本信息

批准号：
71063099
负责人：
Professor Dr. Matthias Hinderer
金额：
--
依托单位：
Institut für Umweltingenieurwissenschaften (IfU)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2008
资助国家：
德国
起止时间：
2007-12-31 至 2013-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/71063099?language=en
关键词：
Timescales sediment dynamics climate topographic

项目摘要

SedyMONT will identify the components of landscape forming processes that have adapted to ongoing climate change. This requires sediment sources and sinks to be identified and the mechanisms and rates of sediment transfer to be quantified at sites in different environments. In SedyMONT we propose to address this topic by (a) combining short-term monitoring of the contribution of climate-driven sediment fluxes to changes in landscape morphology with various sources of surface process data averaged over decadal to millennial scales, and by (b) interpreting the observations within a conceptual modelling framework for sediment production and transfer. The results will guide predictions of landscape response to climate change.The main objectives are tounderstand the timescales and mechanisms of sediment production and transfer and to identify their effects in selected European mountain landscapes,document changes in process rates over different timescales (thousands of years to modern) from various historical sources, including monitoring conducted during the project,analyze how the inheritance of the landscape (e.g., due to the influence of previous glaciations) has affected process rates,investigate how landscape connectivity affects sediment transfer rates and residence times, develop a conceptual modelling framework to understand the transfer of sediment from sources to sinks, analyse the frequency and magnitude of precipitation events in the study areas from observed data and regional climate model scenarios,develop time series and chronologies of erosion, sediment yield and landscape change in the study basins.Sites are selected based on their monitoring history, covering a range of representative mountainous settings across Europe spanning the whole range of processes and process interactions. Each site will be analyzed using modern geophysical, geochemical, geomorphic and remote sensing tools for time series and chronologies of landscape change, flux change, climate change, sediment sources and for inheritance.

SedyMONT将确定适应持续气候变化的景观形成过程的组成部分。这就需要查明沉积物的源和汇，并在不同环境的地点对沉积物转移的机制和速度进行量化。在SedyMONT中，我们建议通过以下方式解决这一问题：（a）将气候驱动的沉积物通量对景观形态变化的贡献的短期监测与十年至千年尺度上平均的各种来源的地表过程数据相结合，以及（B）在沉积物产生和转移的概念建模框架内解释观测结果。研究结果将指导景观对气候变化响应的预测，主要目的是了解沉积物产生和转移的时间尺度和机制，并确定其在欧洲山区景观中的影响，记录不同时间尺度上沉积物产生和转移速率的变化（从几千年到现代）从各种历史来源，包括项目期间进行的监测，分析景观的继承（例如，由于以前冰川的影响）影响了过程速率，调查景观连通性如何影响沉积物转移速率和停留时间，制定概念建模框架以了解沉积物从源到汇的转移，根据观测数据和区域气候模型情景分析研究地区降水事件的频率和幅度，制定侵蚀的时间序列和年表，研究流域的产沙量和景观变化。根据其监测历史选择站点，涵盖整个欧洲的一系列具有代表性的山区环境，涵盖整个过程和过程相互作用。将利用现代地球物理、地球化学、地貌和遥感工具对每个地点进行分析，以了解地貌变化、通量变化、气候变化、沉积物来源的时间序列和年表，并分析遗产。