Lake Van Drilling Project "PALEOVAN", a long continental record in eastern Turkey: Geochronology, palynostratigraphy and environmental response on volcanic events

凡湖钻探项目“PALEOVAN”，土耳其东部的长期大陆记录：地质年代学、孢粉地层学和火山事件的环境响应

• 批准号: 235992761
• 负责人: Professor Dr. Thomas Litt
• 金额: --
• 依托单位: Abteilung Paläontologie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/235992761?language=en
• 关键词: Lake; Van; Drilling; Project; PALEOVAN

Lake Van on the high plateau of eastern Anatolia in Turkey has a surface area of 3,520 km2, a volume of 575 km3, a maximum depth of 450 m, and extends for 130 km WSW-ENE. It is the fourth largest terminal lake in the world. Within the sensitive climate region of eastern Anatolia, it represents a first order continental climate archive between the Black Sea, the Arabian Sea and the Red Sea. Based on an ICDP deep drilling operation (coordinated by T.Litt), two sites with multiple holes were drilled in summer 2010. The Ahlat Ridge-Site, the most important site for paleoclimatological studies, was drilled on a low ridge in the deep basin (water depth 360 m) where a complete 220 m thick sedimentary section with 300 intercalated tephra layers was recovered. It holds a continuous climate archive encompassing ca 500,000 years partly based on annually laminated sediments. In this project proposal, particular attention is paid to provide a detailed Argon chronology based on tephra layers by using single crystals. The chonological frame is a precondition to correlate centennial-scale pollen analyses with global glacial-interglacial cycles. A further scientific goal is the environmental response on major volcanic events in the Lake Van region during the last 500 ka based on high-resolution annual-scale pollen analyses.

土耳其东部安纳托利亚高原上的凡湖面积为3520平方公里，体积为575平方公里，最大深度为450米，向西南偏东方向延伸130公里。它是世界第四大终点湖。在东安纳托利亚气候敏感地区，它代表了黑海、阿拉伯海和红海之间的一级大陆性气候档案。2010年夏天，在ICDP深井钻探作业(由T.Litt协调)的基础上，钻探了两个多孔场地。Ahlat Ridge遗址是古气候学研究中最重要的遗址，是在深盆地的一个低山脊(水深360m)上钻探的，在那里发现了完整的220m厚的沉积剖面和300个夹层的Tephra层。它保存着大约50万年的连续气候档案，部分是基于每年的层状沉积物。在本项目建议书中，特别注意使用单晶提供基于Tephra层的详细的Ar年代学。球粒陨石学框架是将百年尺度的孢粉分析与全球冰期-间冰期旋回联系起来的前提条件。另一个科学目标是在高分辨率年度尺度花粉分析的基础上，对过去500ka期间凡湖地区主要火山事件的环境响应。

项目成果

Abrupt climate and vegetation variability of eastern Anatolia during the last glacial

末次冰期期间安纳托利亚东部的气候突变和植被变化

• DOI: 10.5194/cp-11-1491-2015
• 发表时间: 2015
• 期刊: Climate of The Past
• 影响因子: 4.3
• 作者: Pickarski;Kwiecien;Langgut
• 通讯作者: Langgut

A new high-resolution pollen sequence at Lake Van, Turkey: insights into penultimate interglacial–glacial climate change on vegetation history

• DOI: 10.5194/cp-13-689-2017
• 发表时间: 2016-12
• 期刊: Climate of The Past
• 影响因子: 4.3
• 作者: N. Pickarski;T. Litt

Millennial to orbital-scale variations of drought intensity in the Eastern Mediterranean

• DOI: 10.1016/j.quascirev.2015.12.016
• 发表时间: 2016-02
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: M. Stockhecke;A. Timmermann;R. Kipfer;G. Haug;O. Kwiecien;T. Friedrich;L. Menviel;T. Litt;N. Pic