<P> The ridge is a medium rate spreading center , moving outwards at a rate of approximately 6 centimeters per year . Tectonic activity along the ridge is monitored primarily with the U.S. Navy 's Sound Surveillance System ( SOSUS ) array of hydrophones , allowing for real time detection of earthquakes and eruptive events . </P>
<P> The ridge is a medium rate spreading center , moving outwards at a rate of approximately 6 centimeters per year . Tectonic activity along the ridge is monitored primarily with the U.S. Navy 's Sound Surveillance System ( SOSUS ) array of hydrophones , allowing for real time detection of earthquakes and eruptive events . </P>
average rate of seafloor spreading east of juan de fuca ridge
average rate of seafloor spreading east of juan de fuca ridge
approximately 6 centimeters per year
approximately 6 centimeters per year