流体诱导的无地震断层滑落超越孔隙流体迁移
Pathikrit Bhattacharya1,2, Robert C Viesca1
1Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA. path_geoalum@alumni.princeton.edu robert.viesca@tufts.edu.
概括
液体注入可以引发地震,导致无地震滑动,这比孔隙压力扩散更快地传播压力变化. 这项研究证实无地震滑动超出压力区域,影响地震群动态.
科学领域:
- 地质学
- 地震学
- 流体动力学
背景情况:
- 地震群通常与地下液体注入有关.
- 传统上,这是由于孔液压的增加导致断层不稳定.
研究的目的:
- 通过注射液体引发地震群中的无地震滑动的作用.
- 测试无地震滑动可以传递压力变化超出流体压力区域的假设.
主要方法:
- 分析液体注射实验中的数据.
- 在浅层断层上测量缓慢的无地震滑动.
- 应用合切断模型来限制故障的水力机械参数.
主要成果:
- 实验数据支持无地震滑动可以激活断层的假设.
- 发现断裂强度取决于滑动削弱摩擦和有效正常应力.
- 无地震破裂面的传播速度比孔液扩散更快,距离更远.
结论:
- 无地震滑动是由于液体注入而导致地震群产生的一个重要机制.
- 压力变化可以通过无地震滑动传播到直接压力区域之外.
- 这种机制对理解和预测液体注射场景中的地震行为有影响.
相关概念视频
The Fluid Mosaic Model
177.6K
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
177.6K
Accelerating Fluids
2.3K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
2.3K
Cerebrospinal Fluid
5.6K
Cerebrospinal fluid (CSF) is a colorless liquid that flows around the brain and the spinal cord, playing a vital role in the protection, support, and overall function of the central nervous system (CNS). CSF production, circulation, and absorption are tightly regulated processes essential for the brain and spinal cord to function properly.
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain....
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain....
5.6K
Fluid Pressure
1.2K
In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific...
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific...
1.2K
Characteristics of Fluids
992
Fluids differ from solids primarily in their molecular structure and stress response. Solids have tightly packed molecules with strong intermolecular forces, maintaining their shape and resisting deformation. In contrast, fluids have molecules spaced farther apart with weaker forces, allowing them to flow and deform easily.
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
992
Characteristics of Fluids
8.0K
When a force is applied parallel to the top surface of a solid, it resists the applied force due to the internal frictional forces between the layers of the solid known as shearing resistance. However, when the force is removed, the shearing forces restore the original shape of the solid. Other deformation forces also cause temporary changes in shape if the forces are not beyond a threshold magnitude. Solids tend to retain their shape, making the study of their rest and motion easier. Beyond...
8.0K


