Collaborative Research: Seismic Velocity, Compaction, and Pore Pressure in Underthrust Sediments, Nankai Subduction Zone

合作研究：南开俯冲带逆冲沉积物中的地震速度、压实和孔隙压力

• 批准号: 0241380
• 负责人: Gregory Moore
• 金额: $ 8.75万
• 依托单位: University of Hawaii
• 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: 2003-08-15 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0241380&HistoricalAwards=false
• 关键词: Collaborative; Research; Seismic; Velocity; Compaction

Funds are provided to better constrain in-situ pore pressure, relationship between pore pressure and porosity and compaction state of sediments in the Nankai margin using existing 3-D seismic data. Pore pressure and compaction state of underthrust sediments may be a key control on fault behavior because the decollement localizes at the top of these sediments. The work will provide important information necessary for the drilling of the Nankai seismogenic zone under IODP.

为利用现有三维地震资料更好地反演南海边缘沉积物的原位孔隙压力、孔隙压力与孔隙度的关系以及压实状态提供了基础。滑脱作用主要发生在俯冲带的顶部，沉积物的孔隙压力和压实状态可能是断层活动的主要控制因素。这项工作将为IODP下的南海孕震区钻探提供重要信息。