Changes in the propagation speed of ocean noise signals through Kīlauea

Detailed Description
The figure shows changes in the propagation speed of ocean noise signals (red filled circles) through Kīlauea volcano from September 2020–February 2021. Positive values indicate a speedup in the propagation speed of ocean noise while negative values indicate a velocity slowdown. The black bar around each red circle indicates the uncertainty in the relative velocity change measurement.
Sources/Usage
Public Domain.