Seismic monitoring using the telecom fiber network

We systematically analyze 1.5 years of acquisitions on a land-based telecommunication cable in comparison to co-located seismometers, with successful detection of events in a broad magnitude...

Optical polarization–based seismic and water wave

We successfully sensed seismic and water waves over a 10,000-kilometer-long submarine cable connecting Los Angeles, California, and

Fiber Optic Cables Are Natural Earthquake Detectors

In their study, the researchers analyzed light signals from two 50-kilometer sections of optical-fiber cable that recorded the 2021 Antelope Valley

EASSy

OverviewProject milestonesTelecommunications companies of participating nationsCable landing pointsThe Eastern Africa Submarine Cable System (EASSy) is an undersea fibre optic cable system connecting countries in Eastern Africa to the rest of the world. EASSy runs from Mtunzini in South Africa to Port Sudan in Sudan, with landing points in nine countries and is connected to at least ten landlocked countries — which will no longer have to rely on satellite Internet access to carry voice and data services.

How 1.5 million km of undersea internet cables can

The “Fibre Optic Cable Use for Seafloor” project (FOCUS) has demonstrated how we can use existing fibre-optic cables to detect small

Subsea internet cables could help detect earthquakes

Internet cables that crisscross the sea-floor could be used to detect earthquakes and tsunamis or monitor how climate change alters ocean currents.

Local earthquake response on the submarine communication cable in

In this paper, we analyzed the DAS waveforms of 10 local-earthquake events waveforms recorded by offshore submarine communication cable in the northern South China Sea, and

South Sudan to commence construction of Fiber-optic

By Alan Clement South Sudan is set to commence construction of a 2,400-kilometer Fiber optic cable in December, marking a transformative leap in

South Sudan, World Bank to launch fiber optic project in early 2026

The Government of South Sudan, in collaboration with the World Bank, will begin laying a fiber optic cable from Kenya early next year, a move aimed at strengthening the country''s digital

Bayobab to deploy fiber in South Sudan

Bayobab, a digital connectivity solutions company, has announced plans to build a fiber optic cable network across South Sudan.

How telecommunication cables could help detect

Seismologists at Caltech and Google optic experts are developing a new method to convert global underwater cables into continuous real-time

The Contribution of Submarine Optical Fiber Telecom Cables to the

Recent developments in optical fiber cable technology allows the use of existing and future submarine telecommunication cables to provide seismic and sea-level information.

Frontiers | The Contribution of Submarine Optical Fiber Telecom

Recent developments in optical fiber technology allows the use of existing and new submarine telecommunication cables to provide seismic and sea-level information crucial to monitor

How 1.5 million km of undersea internet cables can double up as an

The "Fiber Optic Cable Use for Seafloor" project (FOCUS) has demonstrated how we can use existing fiber-optic cables to detect small movements on the seafloor caused by tectonic faults.

Online outages: Q3 2025 Internet disruption summary

In Q3 2025, global Internet disruptions were caused by everything from government shutdowns to stray bullets and earthquakes. This report

Seismic monitoring using the telecom fiber network

We implemented laser interferometry on a land-based telecommunication cable and analyzed 1.5 years of continuous acquisition, with successful detections of events in a broad range of magnitudes,

Using deep-sea fiber optic cables to detect earthquakes

February 26 2021, by Kimm Fesenmaier Seismologists at Caltech working with optics experts at Google have developed a method to use existing underwater telecommunication cables to detect earthquakes.

A review of seismic detection using fiber optic distributed acoustic

Low-cost DAS (Distributed Acoustic Sensing) technology based on fiber optic cables is a promising option for many scientific and civil safety applications including recording of seismic waves

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We consider that, whatever the fiber optic cable technology used, the cable can be represented by an additional set of seismic stations and sea-level sensors, contributing to the earthquake and tsunami

Comms blackout across Sudan as rains damage essential fiber optic cable

Cable outages attributed to heavy rains and flash floods in the Haiya area of Sudan''s Red Sea state, have continued across much of the country for the second day in a row.

2024 East Africa Submarine Cable Outage Report

On 12 May 2024, two fiber optic submarine cables—SEACOM and EASSy—were damaged off the coast of KwaZulu-Natal, South Africa, significantly reducing Internet connectivity in multiple East African

Sensing whales, storms, ships and earthquakes using an Arctic fibre

Nishimura, T. et al. Source location of volcanic earthquakes and subsurface characterization using fiber-optic cable and distributed acoustic sensing system. Sci.

South Sudan sets to import fiber optic from Kenya, Djibouti

South Sudan President Salva Kiir Mayardit and his counterpart William Ruto of Kenya have signed a Memorandum of Understanding to establish fiber optic cable along the Eldoret-Juba

Kilometers of “Dark Cable” Form the Newest Seismic

Kilometers of “Dark Cable” Form the Newest Seismic Sensors Fiber-optic cables stretching below cities, through glaciers and along the seafloor could