Lighting Up Dark Fibre for Seismic Imaging

分布式声传感（DAS）是一种新兴的被动地震技术，它将通信光纤电缆（暗纤维）转换成数千个独立的地面运动传感器。该项目旨在利用DAS及其产生的大数据来开发前所未有的高分辨率地球结构图像，探测微地震活动，从而将地质观测与地球过程联系起来。这项强大技术的成果包括地球地下的精细地震成像，作为地质过程和地球化学的最佳代理。好处包括改变矿产资源的勘探，水，地下结构的变化，以及对澳大利亚和世界各地的地质灾害评估

Distributed acoustic sensing (DAS) is a newly emerging passive seismic technique that converts telecommunication fibre-optic cables (dark fibres) into thousands of individual ground motion sensors. This project aims to harness DAS and the big data arising from it to develop unprecedented high-resolution images of the Earth’s structure, detect micro-seismicity, and thereby relate geological observations to Earth processes. Outcomes of this powerful technique include fine-scale seismic imaging of the Earth’s subsurface as the best proxy for geological processes and geochemistry. Benefits include transforming exploration of mineral resources, water, changes in subsurface structure, as well as geohazard assessments for Australia and worldwide