Understanding Climate Change and Environmental Transition: Analyses of Sediment Core Materials from the Sesecapa Lagoon, Pacific Coastal Guatemala

了解气候变化和环境转变:危地马拉太平洋沿岸塞塞卡帕泻湖沉积物核心材料的分析

基本信息

  • 批准号:
    1321355
  • 负责人:
  • 金额:
    $ 4.4万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-10-01 至 2016-09-30
  • 项目状态:
    已结题

项目摘要

With support from the National Science Foundation Dr. Molly Morgan will coordinate the analysis of a geological core collected from the Sesecapa Lagoon in Pacific coastal Guatemala. Using radiocarbon dating, floral, faunal and geological and chemical analysis Dr. Morgan will develop a detailed and chronologically sensitive reconstruction of climate change and environmental transformation for this portion of the Pacific coast. Because human habitation of this coastal region extends over multiple millennia it provides a comparative record which will allow researchers to examine the multi-directional interactions between environmental change and societal response. It is expected that the core will document ca. 6,000 years and thus cover the entire occupation span. Archaeologically the region documents athe shift from residential mobility and low-level food production to permanent sedentism and sociocultural complexity and the rise of complex society.Recent paleoclimatic research recognizes that this period following the last "Ice Age" experienced shifts in climate that must have affected human populations, but understanding of local mechanisms are often lacking and detailed associated culture change remain obscure. On the Pacific coast of Middle America, as well as tropic coasts in many other regions of the world, these changes included the formation of lagoons and beach formation and progradation. These would be documented in the core. In addition to the new light which will be shed on regional archaeology the project has multiple broader impacts. The research will document a major type of landscape transition - the closing off of saltwater estuaries and the subsequent formation of freshwater lagoons - a currently ongoing process on the Pacific coast. The work will provide a detailed understanding of beach accumulation rates and landscape effects. Communities living in this wetland area today can use this information to plan for changes that they will face as rivers continue to dump sediments along the coast and estuary environments transform. Secondly the results may be more broadly generalized.
在国家科学基金会的支持下,莫莉·摩根博士将协调分析从危地马拉太平洋沿岸的塞塞卡帕泻湖收集的地质核心。通过放射性碳测年、植物、动物、地质和化学分析,摩根博士将为太平洋海岸的这部分地区开发一个详细的、年代敏感的气候变化和环境变化重建。由于这个沿海地区的人类居住已经延续了几千年,它提供了一个比较记录,这将使研究人员能够研究环境变化和社会反应之间的多向相互作用。预计该岩心将记录大约6000年,从而涵盖整个占领跨度。考古学上,该地区记录了从居住流动性和低水平粮食生产到永久定居和社会文化复杂性以及复杂社会的兴起的转变。最近的古气候研究认识到,在最后一次“冰河时代”之后的这一时期,气候发生了变化,这一定影响了人类种群,但对当地机制的了解往往缺乏,相关的详细文化变化仍然模糊不清。在中美洲的太平洋海岸,以及世界上许多其他地区的热带海岸,这些变化包括泻湖的形成和海滩的形成和退化。这些将被记录在核心中。除了将为区域考古学带来新的亮点外,该项目还具有多重更广泛的影响。这项研究将记录一种主要的景观转变类型——咸水河口的关闭和随后淡水泻湖的形成——这是太平洋沿岸目前正在进行的过程。这项工作将提供有关泳滩累积速度和景观影响的详细资料。今天,生活在这片湿地地区的社区可以利用这些信息来规划他们将面临的变化,因为河流继续沿着海岸倾倒沉积物,河口环境发生变化。其次,结果可以更广泛地普遍化。

项目成果

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Molly Morgan其他文献

Molly Morgan的其他文献

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