Floods of Central Europe during the Late Quaternary

PALEO FLOOD项目将通过对Eifel湖沉积物的分析，重建中欧最严重洪水事件的日期、震级和边界条件。PALEO FLOOD将研究海洋同位素阶段（MIS） 1-4的极端天气，并计算每世纪/千年极端事件的频率，以了解降水模式的特征和结构。统计分析将用于处理天气事件的强迫，即评估极端气候是内部变化的随机组成部分，还是与特定的边界条件和外部强迫（包括火山和太阳活动和/或北大西洋海温变化）有关。我们将集中讨论中欧过去6万年的历史。这些信息将作为了解全新世晚期极端天气是独特的还是在天气变化的正常范围内的基线。为了实现这一目标，我们将分析来自Eifel maar湖泊的25个14C年代沉积物岩心中的所有洪水事件层，这些沉积物覆盖了整个过去的60,000年。数据生成将通过微观微相分析、µXRF地球化学和CamSizer粒度分析来完成。将从每个maar对事件层进行研究，以确定表征浊积层和滑坡的横向和垂直分选梯度，并将其与洪水悬浮层区分开来。该项目的科学目标是艾菲尔洪水事件和降水异常的时间序列。现代气象和河流测量资料显示，当地的艾菲尔水文极端事件与整个德国中部地区的降水极端事件具有显著的统计学意义。

The PALEO FLOOD project will reconstruct the date, magnitude, and boundary conditions of the most severe flood events in central Europe through analysis of Eifel lake sediments. PALEO FLOOD will study the weather extremes of the Marine Isotope Stage (MIS) 1-4, and calculate the frequency of extreme events per century/millennium to understand the characteristics and structure of precipitation patterns. Statistical analysis will be applied to address the forcing of weather events, i.e. assess whether climate extremes are a stochastic component of internal variations or associated with specific boundary conditions and external forcing including volcanic and solar activity and/or North Atlantic SST changes. We will concentrate on the last 60.000 years in central Europe. This information will serve as a base line to understand if the late Holocene weather extremes are unique or within the normal range of weather variability. To achieve this we will analysis all flood event layers in the sediments of 25 14C dated sediment cores from Eifel maar lakes which cover the entire last 60.000 years. Data generation will be done by microscopic microfacies analysis, µXRF geochemistry and CamSizer grain size analysis. The event layers will be studied from each maar to determine lateral and vertical sorting gradients that characterize turbidites and slumps and distinguish them from flood suspension layers. The scientific goal of the project is a time series of flood events and precipitation anomalies in the Eifel. Modern meteorological and river gauge data show with statistical significance that the local Eifel hydrological extreme events correlate with precipitation extreme events in the entire region of central Germany.