3 papers
physics.geo-ph2026
High-Resolution Trans-Oceanic Distributed Acoustic Sensing Enabled by a Bi-Directional Sensor Implementation
Mikael Mazur, Nicolas K. Fontaine, Roland Ryf +14
We demonstrate continuous distributed acoustic sensing over a 4400km long undersea cable. Bi-directional operation improves the strain signal-to-noise rate by >20dB, enabling 88000…
physics.geo-ph2025
Submarine Cable Deep-Ocean Observation of Mega-Thrust Earthquake and Tsunami with 44,000 100-m Spaced Sensors
Mikael Mazur, Nicolas K. Fontaine, Roland Ryf +13
We detect the recent M8.8 mega-earthquake in Eastern Russia, on a 4400km long active telecom cable in the Pacific Ocean. The resolution achieved 100m represents the highest spatial…
physics.geo-ph2024
Global Seismic Monitoring using Operational Subsea Cable
Mikael Mazur, Martin Karrenbach, Nicolas K. Fontaine +11
We report tele-seismic waves detection from multiple earthquakes on an operational subsea cable from Iceland to Ireland. Using per-span laser interferometry with 100km spacing, we…