Natural and injection-induced seismicity in stable continental regions: Fingerprinting critically stressed fault systems

稳定大陆地区的自然地震活动和注入诱发的地震活动：临界应力断层系统的指纹识别

• 批准号: RGPIN-2017-03823
• 负责人: Eaton, David
• 金额: $ 4.23万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=634090
• 关键词: Natural; injection; induced; seismicity; stable

Induced (human-caused) earthquake activity from fluid injection has surged during the last decade in some parts of North America, largely in response to industrial activities such as hydraulic fracturing and saltwater disposal. Most of this increase in seismicity rate has occurred within stable continental regions (SCRs), areas that have not experienced major tectonic activity for at least 60 million years. In contrast to tectonically active regions near plate boundaries, the dynamic behaviour and location of faults within SCRs are often cryptic. This lack of knowledge constitutes a major source of uncertainty as well as an impediment to pre-development risk assessment for induced seismicity.

在过去十年中，北美一些地区因注入流体而诱发的（人为的）地震活动激增，这主要是对水力压裂和盐水处理等工业活动的反应。地震活动率的增加大部分发生在稳定的大陆地区（scr），这些地区至少有6000万年没有经历过主要的构造活动。与板块边界附近的构造活动区相比，scr内断层的动态行为和位置往往是神秘的。这种知识的缺乏是不确定性的主要来源，也是对诱发地震活动的开发前风险评估的障碍。