Measuring stress changes within seismically active fault zones has been a long-sought goal
of seismology. One approach is to exploit the stress dependence of seismic wave velocity …

Over the past two decades, the development of the ambient noise cross‐correlation
technology has spawned the exploration of underground structures. In addition, ambient …

Noise‐based crustal seismic velocity changes are known to be affected by environmental
perturbations, such as rainfall, atmospheric pressure loading, and temperature changes …

Continuous monitoring of in situ reservoir responses to stress transients provides insights
into the evolution of geothermal reservoirs. By exploiting the stress dependence of seismic …

We observe seasonal seismic wave speed changes (dv/v) in the San Jacinto fault area and
investigate several likely source mechanisms. Velocity variations are obtained from analysis …

Seismologists are eagerly seeking new and preferably low‐cost ways to map and track
changes in the complex structure of the top few kilometers of the crust. By understanding it …

Microseismic noise has been used for seismic velocity monitoring. However, such signals
are dominated by low‐frequency surface waves that are not ideal for detecting changes …

Continuous crosswell seismic monitoring of a small-scale CO 2 injection was accomplished
with the development of a novel tubing-deployed piezoelectric borehole source. This …

Monitoring the subtle seismic velocity changes provides a promising tool to study the Earth's
dynamic processes. However, the precise monitoring of seismic velocity with high temporal …

We utilize train tremors as P‐wave seismic sources to investigate velocity‐strain sensitivity
near the San Jacinto Fault Zone. A dense nodal array deployed at the Piñon Flat …