August 7, 1988 - Hilo Seismic Record
Detailed Description
An example of a seismogram showing the vertical motion of the ground (recorded in Hilo on August 7, 1988). The lines on a seismogram are read left-to-right and top-to-bottom like the lines in a book. The red box shows a detail of the ground motion and the station and date stamp. USGS photo.
Sources/Usage
Public Domain.