Preserving Historic Records

An example film chip scan of a long-period vertical seismogram

Detailed Description

An example film chip scan of a long-period vertical seismogram recorded at the WWSSN station KEV (Kevo, Finland). The stamp on the bottom left gives the metadata for this film chip. A calibration pulse is seen at the beginning of the day and at the end. The earthquake recorded on this film chip is the 9 February 1971 M 6.5 San Fernando, California, earthquake.

Details

Image Dimensions: 800 x 217

Location Taken: US