high-resolution reconstruction of paleo-environment using annual laminated lake deposits

2014 Fiscal Year Final Research Report

• Project/Area Number: 24501291
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geography
• Research Institution: Kyushu University
• Principal Investigator: KASHIMA Kaoru 九州大学, 理学(系)研究科(研究院), 准教授 (90192533)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 年縞 / 湖沼 / 第四紀 / 気候変動 / 珪藻 / 災害史 / 津波堆積物 / 洪水堆積物

Outline of Final Research Achievements

Seasonal environmental histories were often recorded as line laminate structures in lake sediments, called as “Annual Valves”. In this research, we discussed the several different lakes and their annual valves at (a) volcanic lakes, (b) coastal brackish lakes, (c) polar lakes and (d) arid lakes. We checked the detail successions of diatom assemblages which mainly formed small laminated structures in the sediments. Our results made clear that not only climatic histories but also hazard histories can be presumed by diatoms in annual laminated deposits.

Free Research Field

自然地理学