Phanerozoic Seafloor Spreading Rate and Compositional History of the Atmosphere, Ocean, and Sediments: A Dynamical Approach

显生宙海底扩张速率和大气、海洋和沉积物的成分历史：动态方法

• 批准号: 0439051
• 负责人: Fred Mackenzie
• 金额: $ 16.88万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-15 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0439051&HistoricalAwards=false
• 关键词: Phanerozoic; Seafloor; Spreading; Rate; Compositional

The overall goal of this project is to use the MAGic (Makenzie, Arvidson, and Guidry) model to comprehensively evaluate the sensitivity between tectonic spreading rates, volcanic outgassing, continental weathering rates, and climate over long geologic time scales. This modeling effort will include tests that assess the possibility that quasi-periodic, self-organized modes of interaction between atmosphere, ocean, chemical sediments, crust and shallow mantle gave rise to the stable hothouse/greenhouse climatic modes characterizing the Phanerozoic Eon. This research will help improve the wider science community's understanding of how Earth surface processes can impact the long-term biogeochemical cycling of elements. It will also provide new insights as to the relationship between carbon dioxide and climate in terms of temporal forcing and outcome.

该项目的总体目标是使用MAGIC(Makenzie，Arvidson和Guidry)模型来综合评估构造扩张率、火山喷发、大陆风化速率和气候在长地质时间尺度上的敏感性。这项模拟工作将包括评估大气、海洋、化学沉积物、地壳和浅地幔之间准周期、自组织相互作用模式的测试，这些模式可能导致以显生宙Eon为特征的稳定的温室/温室气候模式。这项研究将有助于提高更广泛的科学界对地球表面过程如何影响元素长期生物地球化学循环的理解。它还将为二氧化碳与气候之间在时间强迫和结果方面的关系提供新的见解。