Unused Fiber-Optic Cables Repurposed as Seismic Sensors - Eos
![](https://i0.wp.com/eos.org/wp-content/uploads/2019/03/bundle-fiber-optic-cables.jpg?fit=820%2C615&ssl=1)
So-called dark fiber can serve as regional seismic activity monitors and also detect earthquakes thousands of kilometers away, according to new research.
![](https://media.springernature.com/m685/springer-static/image/art%3A10.1186%2Fs40623-021-01385-5/MediaObjects/40623_2021_1385_Fig5_HTML.png)
Very broadband strain-rate measurements along a submarine fiber
![](https://sciencesprings.files.wordpress.com/2023/04/caltech-deep-synoptic-array-110.jpg)
DAS-Distributed acoustic sensing – sciencesprings
TURNING UNUSED TELECOMMUNICATION FIBER OPTIC CABLES INTO SEISMIC SENSORS
![](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41598-021-85621-8/MediaObjects/41598_2021_85621_Fig1_HTML.png)
Source location of volcanic earthquakes and subsurface
![](https://seismolab.caltech.edu/images/news/jackson-oxide.png)
News - Caltech Seismological Laboratory
![](https://scitechdaily.com/images/Monterey-Bay-Seafloor-Experiment-180x101.jpg)
Undersea Fiber-Optic Cables Make Superb Seismic Network
![](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41467-019-13262-7/MediaObjects/41467_2019_13262_Fig3_HTML.png)
Distributed sensing of microseisms and teleseisms with submarine
![](https://i1.rgstatic.net/publication/349822910_Very_broadband_strain-rate_measurements_along_a_submarine_fiber-optic_cable_off_Cape_Muroto_Nankai_subduction_zone_Japan/links/609b0129a6fdccaebd252599/largepreview.png)
PDF) Very broadband strain-rate measurements along a submarine
![](https://i0.wp.com/eos.org/wp-content/uploads/2019/04/fiber-optic-cable-acoustic-sensing.jpg?fit=820%2C615&ssl=1)
Fiber-Optic Networks Find a New Use as Seismic Sensor Arrays - Eos
![](https://www.frontiersin.org/files/Articles/990837/feart-10-990837-HTML/image_m/feart-10-990837-g003.jpg)
Frontiers Railway traffic monitoring with trackside fiber-optic
![](https://www.eoc-inc.com/wp-content/uploads/2018/02/fiber-optic-components-module-assembly-1.png)
The Importance of Laser Diodes in Fiber Optic Communications, fiber optic
TURNING UNUSED TELECOMMUNICATION FIBER OPTIC CABLES INTO SEISMIC SENSORS
![](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41598-021-82093-8/MediaObjects/41598_2021_82093_Fig4_HTML.png)
Detection of hydroacoustic signals on a fiber-optic submarine cable
![](https://www.frontiersin.org/files/Articles/844506/fmars-09-844506-HTML/image_m/fmars-09-844506-g002.jpg)
Frontiers Performance of Seismic Observation by Distributed