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

该项目的总体目标是使用MAGic （Makenzie, Arvidson, and Guidry）模型综合评估在长地质时间尺度上构造扩张速率、火山放出气体、大陆风化速率和气候之间的敏感性。建模工作将包括评估大气、海洋、化学沉积物、地壳和浅地幔之间的准周期性、自组织的相互作用模式产生显生宙特征的稳定的温室/温室气候模式的可能性的测试。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的长期生物地球化学循环的理解。它还将在时间强迫和结果方面提供关于二氧化碳与气候之间关系的新见解。

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.