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Fault Rupture

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Imaging Earthquake Asperities with Distributed Acoustic Sensing

Originally Published 2 years ago — by Nature.com

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Source: Nature.com

Researchers have used distributed acoustic sensing (DAS) to image the break of earthquake asperities, providing insights into fault rupture and earthquake nucleation. DAS, which utilizes fiber-optic cables as seismic antennas, allows for high-resolution imaging of seismic waves. By analyzing the frequency-dependent seismic radiation from subduction zone megathrust ruptures, the study reveals the complexity of earthquake dynamics and the role of the Earth's surface in controlling depth-dependent seismic radiation. The findings contribute to a better understanding of earthquake processes and could aid in earthquake forecasting and hazard assessment.