Doctoral Dissertation Research: Late Quaternary Climate Variation Within the Maya Lowlands, Belize, Central America as Evidenced by Variations in Speleothem Deposition

博士论文研究：中美洲伯利兹玛雅低地晚第四纪气候变化以洞穴沉积物变化为证据

基本信息

批准号：
9628765
负责人：
George Brook
金额：
$ 1万
依托单位：
University of Georgia Research Foundation Inc
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1996
资助国家：
美国
起止时间：
1996-06-01 至 1998-10-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628765&HistoricalAwards=false
关键词：
Doctoral Dissertation Research Late Quaternary

项目摘要

Webster, James W U of Georgia This proposal examines late quaternary climatic variation within the Maya Lowlands, Belize as evidenced by variations in speleothem deposition. Currently available paleoclimatic records for the Maya Lowlands of Central America are inadequate because detailed paleoclimate proxy data are difficult to obtain in humid, tropical areas. Speleothems are thought to be a source of high resolution paleoclimate data. The aims of the research are to examine speleothems as a source of paleoclimate proxy data and construct a regional, high resolution proxy record of climatic variation for up to 2000 years B.P. In addition, an attempt will be made to establish whether climate variation may have contributed to the decline of the Mayan civilization. Such results may allow prediction of future climate fluctuations for the region. Speleothems from the study area will examined petrographically and by digital image analysis. Spectral methods will then be used to analyze the observed record and compare it with existing climate data. The research is significant because it is the first high-resolution record of paleoclimate for Central America. The results will contribute to our understanding of the Maya collapse and add to the growing body of knowledge concerning speleothems in climate research.

乔治亚州的詹姆斯·韦伯斯特（Webster），该提案研究了玛雅低地的第四纪气候变化，伯利兹（Belize）伯利兹（Belize）曾证明，speleothem沉积的变化证明了这一点。目前，中美洲玛雅低地的古气候记录不足，因为在潮湿的热带地区很难获得详细的古气候代理数据。人们认为斑点被认为是高分辨率古气候数据的来源。这项研究的目的是将speleothems作为古气候代理数据的来源进行检查，并构建最多2000年B.P.的气候变化的区域高分辨率代理记录。此外，将尝试确定气候变化是否可能导致玛雅文明的下降。这样的结果可能可以预测该地区未来的气候波动。研究区域的speleothems将在岩石学和数字图像分析上检查。然后，光谱方法将用于分析观察到的记录并将其与现有气候数据进行比较。这项研究很重要，因为它是中美洲古气候的第一个高分辨率记录。结果将有助于我们对玛雅人崩溃的理解，并增加有关气候研究中有关辣味的知识的越来越多的知识。