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fiber optics

Image overlooking a rocky coastline and water just after sunset with a bright blue line representing a fiber-optic cable curving over the water and rocks
Posted inResearch Spotlights

Internet Cable Reveals the Source of Underwater Vibrations

by Saima May Sidik 30 September 202230 September 2022

A novel use of an existing fiber-optic cable off the coast of Spain has clued scientists in to how seismic noise is generated in the ocean.

坐落于长江干流的中国三峡水库
Posted inResearch Spotlights

光纤技术为滑坡监测开辟新领域

by Aaron Sidder 30 August 202230 August 2022

为了研究中国三峡水库沿线的一处滑坡,研究人员在现场布设了光纤传感器,来监测地下温度、湿度和应变。

China’s Three Gorges Reservoir, located on the Yangtze River.
Posted inResearch Spotlights

Fiber Optics Open New Frontier for Landslide Monitoring

by Aaron Sidder 3 August 202216 September 2022

To study a landslide along China’s Three Gorges Reservoir, researchers deployed underground fiber-optic sensors to monitor temperature, moisture, and strain.

Aerial image of blue whale breathing at the water’s surface.
Posted inNews

Wiretapped Cables and the Songs of Whales

by Jenessa Duncombe 22 July 202217 February 2023

Researchers jerry-rigged fiber-optic cables in a fjord to eavesdrop on blue whales, with possible applications ranging from seafloor mapping to meteorology.

A pile of fiber-optic cable sits on a street in New York City with workers in the background.
Posted inFeatures

Distributed Sensing and Machine Learning Hone Seismic Listening

by Whitney Trainor-Guitton, Eileen R. Martin, Verónica Rodríguez Tribaldos, Nicole Taverna and Vincent Dumont 4 March 20224 March 2022

Fiber-optic cables can provide a wealth of detailed data on subsurface vibrations from a wide range of sources. Machine learning offers a means to make sense of it all.

A DAS array captures a series of earthquakes and aftershocks that shook the Ridgecrest area in Southern California in 2019.
Posted inResearch Spotlights

Fiber-Optic Cables Can Produce High-Resolution Underground Maps

by Jack Lee 15 February 202216 February 2022

Telecom fiber repurposed as distributed acoustic sensing arrays can image near-surface structure and potentially improve seismic hazard mapping in urban areas.

Photograph of scientists installing fiber-optic cables in a trench.
Posted inEditors' Vox

Using Sound and Vibration Signals to Understand the Subsurface

by Yingping Li, Martin Karrenbach and Jonathan B. Ajo-Franklin 6 January 202216 February 2022

A new book explores Distributed Acoustic Sensing, a technology with a range of applications across geophysics and related fields.

A snowcat plows its way through snow with a rocky ridge in the background.
Posted inScience Updates

Sensing Iceland’s Most Active Volcano with a “Buried Hair”

by Sara Klaasen, Sölvi Thrastarson, Andreas Fichtner, Yeşim Çubuk-Sabuncu and Kristín Jónsdóttir 4 January 20221 June 2022

Distributed acoustic sensing offered researchers a means to measure ground deformation from atop ice-clad Grímsvötn volcano with unprecedented spatial and temporal resolutions.

Plot showing complementary strengths and weaknesses of existing and emerging seismic instrumentation for earthquake response.
Posted inEditors' Highlights

Aftershocks and Fiber Optics

by T. W. Becker 28 June 202116 February 2022

Internet cables can be transformed into a string of dense seismic sensors, and this approach has now been shown to be highly useful for quickly monitoring seismicity after major earthquakes.

Sunrise over snow.
Posted inNews

Laser Flashes Shed Light on a Changing Arctic

by Katherine Kornei 18 May 202116 February 2022

An ongoing project in northern Alaska is using pulses of laser light to monitor anthropogenic activity, ice quakes, and marine wildlife.

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