Collaborative Research: quantifying precipitation changes in the South American subtropics over the late Pleistocenee

GSTDTAP

项目编号	1702438
	Collaborative Research: quantifying precipitation changes in the South American subtropics over the late Pleistocenee
	Jay Quade
主持机构	University of Arizona
项目开始年	2017
	2017-06-01
项目结束日期	2019-05-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	87520(USD)
国家	美国
语种	英语
英文摘要	Many regions of the world, including the Americas, are experiencing drought and its political consequences. The critical question is why, and are the causes natural or man-made? The answer to this and other questions will help us plan for what is ahead, as some regions of the planet continue to warm and dry. This project will travel to the central Andes of South America- a region that is both politically fragile and recently drought stricken. The aim is to study the interplay of temperature and drought in the past, for clues to their probable connections in the future. The main purpose of the project is to create a map of changes in the sizes of ancient lakes in the central Andes, giant ancestors to modern lakes in the region such as Lake Titicaca. Well-preserved shorelines mark the extent of these ancient lakes, and using state-of-the art techniques, the age of these features can be determined. The mapping and dating is vital to relating lake size (and therefore rainfall amounts in the past) to the changing temperature state of the planet, which is well known from other records. In short, these reconstructions will help scientists to better understand how rainfall in this region will change in the coming decades to centuries. This award is cofunded by the Paleo Perspectives on Climate Change Program and the Office of International Science and Engineering.
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/71086
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Jay Quade.Collaborative Research: quantifying precipitation changes in the South American subtropics over the late Pleistocenee.2017.