Floods of Central Europe during the Late Quaternary

第四纪晚期中欧洪水

基本信息

批准号：
244812229
负责人：
Professor Dr. Frank Sirocko
金额：
--
依托单位：
Institut für Geowissenschaften
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2013
资助国家：
德国
起止时间：
2012-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/244812229?language=en
关键词：
Floods Central Europe during Late

项目摘要

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.

古洪水项目将通过分析Eifel湖沉积物来重建中欧最严重的洪水事件的日期，大小和边界条件。古洪水将研究海洋同位素阶段（MIS）1-4的极端天气，并计算每个世纪/千年极端事件的频率，以了解降水模式的特征和结构。统计分析将用于解决天气事件的强迫，即评估攀爬极端是内部变化的随机组成部分，还是与特定边界条件以及包括火山活动和/或北大西洋SST变化有关的外部强迫和外部强迫。我们将专注于中欧的最后60.000年。该信息将是一条基本线，以了解全新世的晚期极端是独特的还是在正常的天气变异范围内。为了实现这一目标，我们将分析来自Eifel Maar Lakes的25个14C日期岩心的沉积物中的所有洪水事件层，这些层次涵盖了整个60.000年。数据生成将通过微观微相分析，µXRF地球化学和摄影机晶粒尺寸分析来完成。将从每个MAAR研究事件层，以确定表征浊积和凹陷的横向和垂直排序梯度，并将其与洪水悬浮层区分开。该项目的科学目标是EIFEL中的洪水事件和降水异常的时间系列。现代气象和河流量表的数据表明，统计学意义是局部Eifel氢极端事件与德国中部整个地区的降水极端事件相关。