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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.

PALEO FLOOD项目将通过对艾菲尔湖沉积物的分析，重建中欧最严重洪水事件的日期、规模和边界条件。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。将应用统计分析来解决天气事件的强迫，即评估极端气候是否是内部变化的随机组成部分，或与特定的边界条件和外部强迫有关，包括火山和太阳活动和/或北大西洋SST变化。我们将集中在过去的60.000年在中欧。这些信息将作为一个基线，以了解晚全新世极端天气是否是独特的或在正常范围内的天气变化。为了实现这一目标，我们将分析所有的洪水事件层的沉积物中的25个14 C从艾菲尔玛珥湖，涵盖整个过去60.000年的沉积物芯。数据生成将通过微观微相分析、µXRF地球化学和CamSizer粒度分析完成。将对每个maar的事件层进行研究，以确定表征浊积岩和滑塌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在艾菲尔的洪水事件和降水异常的时间序列。现代气象和河流测量数据表明，统计意义上的当地艾菲尔水文极端事件与降水极端事件在整个德国中部地区。