Long-period vertical seismogram on paper

paper with seismogram recording

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

Credits

A. C. B. Alejandro, C. R. Hutt, A. T. Ringler, S. V. Moore, R. E. Anthony, D. C. Wilson

Source:

The Albuquerque Seismological Lab WWSSN Film Chip Preservation Project
A. C. B. Alejandro, C. R. Hutt, A. T. Ringler, S. V. Moore, R. E. Anthony, D. C. Wilson; The Albuquerque Seismological Lab WWSSN Film Chip Preservation Project. Seismological Research Letters ; 90 (1): 401–408. doi: https://doi.org/10.1785/0220180275