Optical Imagery and Seismic Data at POKR for February 28, 2019
Detailed Description
Comparison between optical imagery and seismic data for February 28, 2019 UTC. The seismic data (gray) is from the POKR (Poker Flat Research Range, Alaska) seismometer, and red, blue, and green are all components of the all-sky camera at Poker Flat. The signal on the seismometer correlates with the sky camera signal that recorded the aurora, indicating that the dominant signal is from the magnetic field variations during the aurora. (modified from original, Adam Ringler)
Sources/Usage
Public Domain.