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Broadband seafloor seismic installations can yield quality data comparable to land stations in terms of ambient noise levels and time series events, a study has shown. This is good news for plans to fill in the gaps in the Global Seismic Network (GSN) around the world.

About 25 GSN stations are needed on the seafloor. The study the Ocean Seismic Network (OSN) Pilot Experiment, was carried out to test different systems for broadband seafloor seismology. So far GSN has about 115 high quality, broadband, three-component, seismic stations on continents and islands around the world.