Application of 222Rn as a Tracer to Study Gas Hydrate Dynamics

应用 222Rn 作为示踪剂研究天然气水合物动力学

• 批准号: 9730817
• 负责人: Douglas Hammond
• 金额: $ 16.94万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-15 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9730817&HistoricalAwards=false
• 关键词: Application; 222Rn; Tracer; Study; Gas

Abstract Hammond/Brewer Radon isotope Rn-222 is a tracer that may provide some insight into kinetics of hydrate formation and their characteristics. Little is know of the interaction of radon with methane. The work will focus of measurements in the lab on the ability of Rn-222 to be incorporated into methane hydrates as they form and its post-crystallization retention. The high-pressure apparatus of MBARI will be used. Cores and seep samples will be collected from the Cascadia margin and Eel River basin to measure naturally occurring Rn/CH4 ratios in hydrates. Local benthic flux measurements will characterize the carbon dynamics in the vicinity of the hydrates. The work will establish whether Rn can be used as a geochronometer.

摘要Hammond/Brewer Rapon同位素RN-222是一种示踪剂，可以对水合物形成及其特征的动力学有所了解。 几乎不知道ra与甲烷的相互作用。 这项工作将集中在实验室中的测量值，即RN-222在形成甲烷水合物中及其结晶后保留率的能力。 将使用Mbari的高压设备。 将从卡斯卡迪亚边缘和鳗鱼河盆地收集核心和渗水样品，以测量水合物中自然存在的RN/CH4比率。 局部底栖通量测量将表征水合物附近的碳动力学。 这项工作将确定RN是否可以用作地球体学仪。