Locating the Precise Sources of High‐Frequency Microseisms Using Distributed Acoustic Sensing

Although microseisms have been observed for more than 100 years, the precise locations of their excitation sources in oceans are still elusive. Underwater Distributed Acoustic Sensing (DAS) brings new opportunities to study microseism generation mechanisms. Using DAS data off coast Valencia, Spain, and applying a cross-correlation approach, we show that high-frequency (0.5–2 Hz) confined between 7 27 km from shore, where water depth varies 25 m. Over time, observe these move quickly along narrow areas, sometimes within few kilometers. Our methodology applied allows us characterize with high spatiotemporal resolution, providing way understanding global complex seismic phenomena happening oceans.