Last and current interglacial environments of Kola Peninsula, as reflected in the sediment record of Lake Imandra

这里提出的项目是对俄罗斯彼得堡州立大学和DFG之间的双边计划“DFG-SPSU 2016”的贡献。它的目的是调查的气候和环境历史的科拉半岛，俄罗斯，在晚第四纪时期，根据组成的沉积物记录在伊曼德拉湖。Imandra面积876平方公里，是欧洲北极地区最大的湖泊。它的最大水深为70米，位于科拉半岛西部，靠近芬兰边境，位于一个狭长的深构造洼地中。由于洼地的方向垂直于更新世冰块的主流方向，因此预计末次冰期之前沉积在洼地中的沉积物尚未完全被侵蚀或扰动。这些沉积物可以作为一个独特的，部分连续的档案重建的冰前气候和环境的历史，在一个地区，在该地区，目前的了解第四纪地质广泛局限于时间后的末次冰盛期。为此目的，（一）应在Imandra湖进行地震勘测，以确定其沉积厚度和结构，（二）应在地震勘测确定的地点，使用改进的撞击活塞取样器，从湖中采集长达30米的沉积物岩心，（三）应不断对岩心进行地层学、沉积学以及化学和生物组成的调查，以及（iv）从所测量的代用指标中，应获得湖泊及其附近的气候和环境历史的定性和定量重建。实地和分析工作，以及结果的解释和出版，将与来自彼得堡州立大学的同事共同进行，建立在自20世纪90年代以来的持续合作基础上。这一项目可以在实地后勤费用有限的情况下进行，因为实地工作所需的科隆大学的地震和取芯技术，在德国和俄罗斯研究部资助的另一个研究项目的实地工作之后，将在俄罗斯免费提供。

The project proposed here constitutes a contribution to the bilateral programme "DFG-SPSU 2016" between the St. Petersburg State University, Russia, and the DFG. It aims at investigating the climatic and environmental history of the Kola Peninsula, Russia, during Late Quaternary times, based upon the composition of the sediment record in Lake Imandra. With 876 km2 Imandra is the largest lake in the European Arctic. It has a maximum water depth of 70 m and is located on the western Kola Peninsula, close to the Finnish border, in an elongated deep tectonic depression. Since the depression is oriented perpendicular to the main flow direction of the Pleistocene ice masses, it is expected that sediments deposited in the depression prior to the last glaciation have not entirely become eroded or disturbed. These sediments could function as a unique, partly continuous archive for the reconstruction of the preglacial climatic and environmental history, in an area, in which the present understanding of the Quaternary geology is widely restricted to the time following the Last Glacial Maximum. For this purpose, (i) a seismic survey shall be carried out on Lake Imandra, in order to determine its sediment thickness and architecture, (ii) sediment cores of up to 30 m length shall be taken from the lake at sites identified by the seismic survey, using an improved percussion piston corer, (iii) the cores shall consistently be investigated for stratigraphy, sedimentology, and chemical and biological composition, and (iv) from the proxies measured, qualitative and quantitative reconstructions of the climatic and environmental history in the lake and its vicinity shall be derived. The field and analytical work, as well as the interpretation and publication of the results, shall be made jointly with colleagues from the St. Petersburg State University, building on a continuous collaboration since the 1990s. This project could be carried out with limited costs for field logistics, because the seismic and coring techniques of the University of Cologne, which are requested for the fieldwork, will be available in Russia at no cost following fieldwork for another research project funded by the German and Russian Research Ministries.