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DigitSeis; a new digitization software for analog seismograms

Petros Bogiatzis and Miaki Ishii
DigitSeis; a new digitization software for analog seismograms
Seismological Research Letters (March 2016) 87 (3): 726-736


This article presents a new MATLAB software, DigitSeis, that converts digital, raster images of analog seismograms to readily usable, digital time series using image-processing techniques. It classifies important features of analog seismograms, such as time marks, to simplify the generation of continuous time series and uses some of this information to assign accurate timing. Geometrical distortions associated with various stages of seismogram creation, storage, and digitization are detected automatically and corrected. Although the software is written to minimize human input, DigitSeis provides interactive tools for challenging situations such as when traces cross. Finally, the effectiveness of the software is demonstrated with digitization of a long-period seismogram from the Harvard-Adam Dziewonski Observatory recorded in November 1938. At least five significant teleseismic events are identified, and its spectral analysis shows no spurious features.

ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 87
Serial Issue: 3
Title: DigitSeis; a new digitization software for analog seismograms
Affiliation: Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States
Pages: 726-736
Published: 20160323
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 25
Accession Number: 2016-034670
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201617
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