在黄石火山火山口地震群的长期动态
Manuel A Florez1, Bing Q Li2, David R Shelly3
1Universidad Industrial de Santander, Carrera 27 Calle 9, Bucaramanga, 680002 Santander, Colombia.
Science advances
|July 18, 2025
概括
火山系统中的地震群是由流体动力学驱动的. 这项研究表明,缓慢的液体扩散和快速注射会导致黄石的地震群,影响断层结构.
科学领域:
- 地质物理学 地质物理学
- 火山学 火山学是一门学科.
- 地震学 地震学
背景情况:
- 了解火山地区的地震群对于危险评估至关重要.
- 控制水热系统中群体发生和演变的精确机制尚未完全理解.
研究的目的:
- 调查黄石火山口地震群的空间分布和时间演变背后的控制因素.
- 开发一个高分辨率的地震目录黄石地区使用先进的方法.
主要方法:
- 利用了最先进的深度学习算法.
- 采用了详细的三维速度模型.
- 为黄石火山口建立了一个15年的高分辨率地震目录.
主要成果:
- 超过一半的地震发生在群像家族中,具有低中心扩张和迁移.
- 由静止期隔开的相邻地震群被确定为主导特征.
- 卡尔德拉下的集群地震与与外部平面断层相比,不成熟,更粗的断层结构有关.
结论:
- 地震群很可能是通过缓慢的水性液体扩散和快速的插曲性液体注射的相互作用来控制的.
- 透密封的破裂可能会触发这些偶尔的液体注射.
- 长期的流体扩散过程在驱动水热系统中的地震群中起着关键作用.
相关概念视频
01:25Effects of Creep
221
Creep in concrete, the gradual deformation under prolonged stress, significantly impacts the integrity of structures. For reinforced concrete beams, it can be a vital design consideration, as it increases deflection, sometimes necessitating additional design measures. In columns, especially slender ones under eccentric loads, creep can cause buckling, compromising their stability. However, creep can be beneficial in indeterminate structures by mitigating stresses that arise from shrinkage,...
221
01:17Frequency of Spring-Mass System
6.0K
One interesting characteristic of the simple harmonic motion (SHM) of an object attached to a spring is that the angular frequency, and the period and frequency of the motion, depend only on the mass and the force constant of the spring, and not on other factors such as the amplitude of the motion or initial conditions. We can use the equations of motion and Newton's second law to find the angular frequency, frequency, and period.
Consider a block on a spring on a frictionless surface. There...
Consider a block on a spring on a frictionless surface. There...
6.0K