Modeling Dissociation of Gas Hydrates in Marine Sediments and Processes Related to Methane Transport in Faults and Fractures

模拟海洋沉积物中气体水合物的解离以及与断层和裂缝中甲烷传输相关的过程

• 批准号: 0242163
• 负责人: Wenyue Xu
• 金额: $ 22.81万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-15 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0242163&HistoricalAwards=false
• 关键词: Modeling; Dissociation; Gas; Hydrates; Marine

The PIs will construct and apply a relatively complex numerical model for the formation and dissociation of gas hydrate in marine sediments. Utility of the model will include: understanding several geological observations, such as anomalous freshening below the BSR; BSR offsets across faults; and assessing potential expectations of a perturbed gas hydrate system, such as methane release and crack propagation The PIs will modify earlier models by including a number of new factors, such as, latent heat and salinity, and incorporating feedbacks among gas hydrate dissociation and changes in pressure, temperature and salinity. They will also attempt to test their models against empirical observations of the gas hydrate system.

pi将构建和应用一个相对复杂的数值模型，用于海洋沉积物中天然气水合物的形成和解离。该模型的用途将包括：理解若干地质观测，例如BSR以下的异常更新；断层间的BSR偏移量；pi将修改早期的模型，包括一些新的因素，如潜热和盐度，并纳入天然气水合物解耦与压力、温度和盐度变化之间的反馈。他们还将尝试用对天然气水合物系统的经验观察来检验他们的模型。