Seismogram Archive Facility
The Department maintains a Seismogram Archive Facility in the basement of the Seabury Building,
across the street from the Technological Institute. It holds extensive collections of
microfilmed and microfiched seismograms from the World-Wide Standardized Seismographic Network
(1963-1985), originally acquired by Professors Stein and Okal, later complemented through the
transfer of the full collection owned by the California Institute of Technology (1963-1970).
In addition, we hold complete microfilmed archives of the Southern California (Caltech) network
for 1923-1962; and extensive datasets of records at ex-Soviet, North American, and Japanese stations,
dating as far back as the 1910's. As a whole, our holdings comprise upwards of 5,000,000
seismograms, covering the pre-digital era of seismology.
The Seismogram Archive Facility includes a modern reader/scanner allowing the production
of high-quality digital images from microfilms and microfiches. When combined with
24/7 open access under the responsibility of a Faculty member, Northwestern's facility
is unparalleled in the United States in terms of original data for the study of global
Additional facilities for the processing of paper seismograms include a Departmental
150 cm x 100 cm digitizing table and access to a full-size (135-cm wide) digital scanner
at the nearby University Library.
|Facility Contact||Prof. Emile Okal|
|Facility Address||Seabury B-40, 2122 Sheridan Road|
|Facility Phone||+1 847 467 2619|
|Department Address||2145 Sheridan Road, Tech F374, Evanston, IL 60208-3130|
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