| December 1, 2019 — 22:24 GMT (22:24 GMT)
| Topic: Innovation
Researchers employed 20 kilometers (pink) of a 51-kilometer undersea fiber-optic cable as a seismic array to study the fault zones under Monterey Bay. During the four-day test, the scientists detected a magnitude 3.5 earthquake 45 kilometers away in Gilroy, and mapped previously uncharted fault zones (yellow circle).
Nate Lindsey, UC Berkeley
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Our existing telecom infrastructure has new potential. A team of scientists used fiber-optic cables that were already installed under California’s Monterey Bay to detect quakes, access fault information, and measure ocean waves.
Typically, scientists use instruments called seismometers to study earthquakes and keep an eye on the fault lines that formed throughout our planet’s history. For practical reasons, most of the seismometers are land, although 71 percent of Earth’s surface is covered in water, according to the US Geological Survey. At the shaky California coast, scientists found a convenient way to fill in the blanks.
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| December 1, 2019 — 22:24 GMT (22:24 GMT)
| Topic: Innovation