Floating Seismographs (MERMAIDS)

Beamforming of Rayleigh and Love Waves in the Course of Atlantic Cyclones

“…Our results further indicate the need to study in more detail the radiation patterns, attenuation and the complexity of the cyclone microseismic wavefield propagation. Near‐field (on‐ and off‐shore) observations using widespread and dense sensor layouts, such as large‐N‐arrays, OBS, floating seismographs (e.g., MERMAIDS—see Hello and Nolet (2020)), or Distributed Fiber Optic Sensing, might be particularly adequate to cover some of these aspects. Generally speaking, an improved detection and understanding of ocean microseisms has the potential to refine existing atmosphere‐ocean‐solid earth coupled models, and eventually to bring complementary information to traditional methods for cyclone monitoring and tracking in the ocean.…”

Beamforming of Rayleigh and Love waves in the course of Atlantic cyclones

“…Our results further indicate the need to study in more detail the radiation patterns, attenuation and the complexity of the cyclone microseismic wavefield propagation. Near-field (on-and off-shore) observations using widespread and dense sensor layouts, such as large-N-arrays, OBS, floating seismographs (e.g., MERMAIDS-see Hello and Nolet (2020)), or Distributed Fiber Optic Sensing, might be particularly adequate to cover some of these aspects. Generally speaking, an improved detection and understanding of ocean microseisms has the potential to refine existing atmosphere-ocean-solid earth coupled models, and eventually to bring complementary information to traditional methods for cyclone monitoring and tracking in the ocean.…”

Path-averaged delay times for seismic tomography

“…Contrary to fixed stations, floating sensors ('Mermaids') in the oceans do not create duplicate ray paths over time. It has been shown that an array of only 1000 such floats would be able to provide full 3-D resolution in all of the Earth's mantle (Sukhovich et al 2015 ;Hello & Nolet 2020 ).…”