These current meters measure local currents and temperatures. They are installed nearby to roadband seismometers to provide data important for processing of seismic information. Local currents can induce "noise" into the acoustic signal and current meter data allow filtering of this "noise." The Nobska MAVS-4 3-D Single Point Velocity Meter (VELD3) measures local currents.
The VEL3DB301 instrument is currently installed at Axial Base and is connected to the MJ03A junction box by a 10 m extension cable. This 3-D velocity meter is positioned near a Seafloor Pressure sensor (PRESTA301), a Low Frequency Hydrophone (HYDFLA301), and a Broadband Seismometer (OBSKA301).