University of Michigan News
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U-M seismologist Zack Spica says fiber optic cables that line ocean floors could provide a less expensive, more comprehensive alternative to the current buoys that act as early warning systems for tsunamis.
The DAS technique works by monitoring photons—particles of light.
As light travels in a wave through the cables, some photons are refracted back to the beginning of the cable.
Using one of the devices placed in Florence , Oregon , the team was able to detect a tsunami that originated in an island chain.
“But if we think large, if we think big over the next 15 years , they should probably try to reinvest in their own infrastructure.” This study builds on previous research Spica conducted to determine whether fiber optics could detect ground motions from earthquakes. Next, Spica says software needs to be developed to transcribe information for tsunami detection from fiber optic cables in real time..
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