Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; February 1975; v. 65; no. 1; p. 227-233
© 1975 Seismological Society of America
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The measurement of seismographic records using a computer-controlled film scanner

R. F. BLAKELY, C. R. ELLIS and H. J. MARTIN

GEOLOGY DEPARTMENT INDIANA UNIVERSITY, BLOOMINGTON, INDIANA 47401
PHYSICS DEPARTMENT INDIANA UNIVERSITY, BLOOMINGTON, INDIANA 47401

Abstract

A semi-automatic system to digitize seismographic records is described. Photographic images of the records are digitized using a cathode-ray-tube film scanner that is controlled by a computer. An operator, interacting with the computer through a display console, supervises the overall data collection and can intervene in the search for traces and in the digitization of the data whenever he feels that it is necessary.






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Copyright © 1975 by the Seismological Society of America.