Volcanic Tremor of Mt. Etna (Italy) Recorded by NEMO-SN1 Seafloor Observatory: A New Perspective on Volcanic Eruptions Monitoring
The NEMO-SN1 seafloor observatory, located 2100 m below sea level and about 40 km from Mt.Etna volcano, normally records a background seismic signal called oceanographic noise.This signal is characterized by high amplitude increases, lasting up to a few days, and by two typical 0.1 and 0.3 Hz frequencies in its spectrum.Particle motion analysis sho