Climatic History of the Western Amazon Basin and the Equatorial Andes since 18K

18K以来亚马逊盆地西部和赤道安第斯山脉的气候历史

• 批准号: 8709685
• 负责人: Paul Colinvaux
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-01 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8709685&HistoricalAwards=false
• 关键词: Climatic; History; Western; Amazon; Basin

Palynology and paleolimnology will be used to reconstruct the climatic history of the Western Amazon basin since the last glacial maximum. Sediments cores will be raised from Amazonian crater Lake Kumpaka, from an ancient Amazonian riverine lake, Zancudococha, and from the lakes in the southern Ecuadorian Andes. Fossiliferous Amazonian exposures shown by radiocarbon dating to be of glacial age will be sampled and explored. Pollen and diatom analyses will be undertaken to reconstruct histories of vegetation and lake levels in order to test the hypothesis that glacial climates of the western Amazon were cooler rather than drier than Holocene climates. This project is important because it will delineate the paleoclimate history of this vast tropical region, a region critically important to our understanding of climate change and one virtually unknown. The research will be carried out in collaboration with Professor Steinitz-Kannan at Northern Kentucky University under NSF grant number ATM-8713211.

自上次冰川最大值以来，将使用孢粉学和古杂种学来重建西部亚马逊盆地的气候历史。 沉积物核心将从亚马逊火山口库帕卡（Kumpaka），Zancudococha的一个古老的亚马逊河湖（Amazonian Riverine Lake）以及厄瓜多尔南部安第斯山脉的湖泊中饲养。 将采样并探索被放射性碳历史所示的化石亚马逊风险。 将进行花粉和硅藻分析，以重建植被和湖泊水平的历史，以检验以下假设：西部亚马逊西部的冰川气候比全新世气候更凉爽，而不是干燥。 该项目很重要，因为它将描绘这个庞大的热带地区的古气候历史，这个地区对我们对气候变化的理解至关重要，几乎是一个未知的地区。 这项研究将与北肯塔基大学的Steinitz-Kannan教授合作进行，根据NSF赠款编号ATM-8713211。