#hawaii usgs
Volcano Watch — Using the Ocean to Track Volcanic Activity at Kīlauea
The USGS Hawaiian Volcano Observatory has a number of seismometers in place across Kīlauea Volcano for monitoring volcanic processes and active fault movements. When magma is not moving within or erupting from Kīlauea, the oceanic microseisms appear on seismometers as a repeating and unchanged signal.
Magnitude 4.5 Earthquake South of Island of Hawaiʻi
Today’s Big Island earthquake occurred about 43 miles southwest of Lō‘ihi, and was not caused by activity on that submarine volcano. The depth, location, and recorded seismic waves of the earthquake suggest a source due to bending of the oceanic plate from the weight of the Hawaiian island chain.