Fiber-optic cables have the potential to revolutionize seismic detection and understanding of earthquakes. Researchers from the California Institute of Technology have found that fiber-optic cables not only detect earthquakes but also provide detailed information about the seismic events. By converting fiber-optic networks into seismic arrays, seismologists can gain a better understanding of earthquakes and develop early warning systems. These networks offer a dense and low-cost seismic sensor network, unlike traditional expensive seismometers. The researchers used distributed acoustic sensing to measure the intensity of signals reflected back from imperfections in the fiber, allowing them to pinpoint the location of seismic activity. While there are technical challenges in processing and storing the large amounts of data produced by a fiber-optic seismic array, collaboration with telecom companies could make this technology a reality.
| Signal | Change | 10y horizon | Driving force |
|---|---|---|---|
| Fiber-optic cables used as seismic arrays | Transformation of seismic detection | Enhanced understanding of earthquakes, better early warning systems | Cost-effectiveness and accessibility of cables |
| Optical fibers measure nuances of seismic events | Improvement in seismic data | Higher resolution and pinpointing of smaller seismic activity | Advancements in distributed acoustic sensing |
| Optical cables converted into DAS arrays | Conversion of existing infrastructure | Creation of expansive seismic sensor network | Collaboration with telecom companies |
| Large amounts of data from fiber-optic arrays | Technical challenge | Improved data processing and storage capabilities | Advancements in data processing technology |
| Accessing fibers for expansive DAS array is challenging | Collaboration with telecom companies | Negotiation with telecom companies for fiber access | Recognition of the advantage of collaboration |