Low Frequency Hydrophone V15

Low Frequency Hydrophone Goes to the Seafloor

Part of this detection and monitoring of seismic events  will be provided by low-frequency hydrophones (2 Hz to 20 KHz) that are well suited to detect the hydroacoustic tertiary phase of T waves of oceanic earthquakes. These sensors also detect solid-earth P waves from regional and teleseismic earthquakes. Coupled with the Ocean Bottom Seismometers, the low-frequency hydrophones will increase our ability to detect offshore earthquakes in real-time, determine their magnitude, and enable better location accuracy.

During VISIONS '14, low-frequency seismometers were installed in the central (MJ03F) and eastern (MJ03E) Axial caldera, and at Axial Base (MJ03A), Slope base (MJ01A), and Southern Hydrate Ridge Summit (LJ01B).