Making Non-Digitally-Recorded Seismograms Accessible Online for Studying Earthquakes

Lee, W.H.K.; Benson, R.

doi:10.1007/978-1-4020-8222-1_20

Cited by 13 publications

(15 citation statements)

References 21 publications

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“…In this context, a common practice is to effect a selection of records to be processed, most often based on a magnitude threshold, as discussed for example by Lee and Benson [39]. While this may constitute the only feasible strategy under existing budgetary and manpower constraints, the ultimate goal of a preservation effort should be the transfer of the complete collection to digital format, including those seismograms perceived as containing only ''noise''.…”

Section: Challenges and Methods Of Seismogram Preservationmentioning

confidence: 99%

“…A general review of its early stages can be found, e.g., in Dewey and Byerly [15] and Lee and Benson [39], to which the reader is referred for ampler details. As mentioned above, the first instrumental record of a distant earthquake to be identified as such is generally recognized as von Rebeur-Paschwitz' [64] observation on 17 April 1889 of a Japanese earthquake on horizontal pendulums at Potsdam and Wilhelmshaven, built to function as modern day tiltmeters, i.e., to record deviations in the local vertical.…”

Section: A Short Perspective On the History Of Seismometrymentioning

confidence: 99%

“…The data, consisting of six components per station per day, were available as individual 70-mm microfilm chips, or on rolls of 35-mm microfilm, the latter inherently more cumbersome to use. A detailed description of the history of the WWSSN is given by Lee and Benson [39].…”

Section: The World-wide Standardized Seismograph Network (Wwssn)mentioning

confidence: 99%

“…The demise of analog recording, and more generally of the WWSSN, was becoming inevitable, notably as funding for the maintenance and operation of the network became scarcer [39]. As a cost-cutting measure, it was decided, starting in July 1978, to discontinue the production of 70-mm film chips, in favor of microfiches regrouping 24 seismograms (four days of data).…”

Section: The World-wide Standardized Seismograph Network (Wwssn)mentioning

confidence: 99%

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Historical seismograms: Preserving an endangered species

Okal

2015

GeoResJ

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a b s t r a c tThe youth of seismology as a science, compared to the typical duration of seismic cycles, results in a relative scarcity of records of large earthquakes available for processing by modern analytical techniques, which in turn makes archived datasets of historical seismograms extremely valuable in order to enhance our understanding of the occurrence of large, destructive earthquakes. Unfortunately, the value of these datasets is not always perceived adequately by decision-making administrators, which has resulted in the destruction (or last-minute salvage) of irreplaceable datasets.We present a quick review of the nature of the datasets of seismological archives, and of specific algorithms allowing their use for the modern retrieval of the source characteristics of the relevant earthquakes. We then describe protocols for the transfer of analog datasets to digital support, including by contact-less photography when the poor physical state of the records prevents the use of mechanical scanners.Finally, we give some worldwide examples of existing collections, and of successful programs of digital archiving of these valuable datasets.

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Section: Challenges and Methods Of Seismogram Preservationmentioning

confidence: 99%

Section: A Short Perspective On the History Of Seismometrymentioning

confidence: 99%

Section: The World-wide Standardized Seismograph Network (Wwssn)mentioning

confidence: 99%

Section: The World-wide Standardized Seismograph Network (Wwssn)mentioning

confidence: 99%

See 2 more Smart Citations

Historical seismograms: Preserving an endangered species

Okal

2015

GeoResJ

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“…In addition, we have an extensive collection of seismic station bulletins that are necessary to make use of these seismograms. Our effort is also supporting of the international SeismoArchives project (http://www.iris.edu/seismo/; Lee and Benson, 2008).…”

Section: The Usgs Seismic Data Library In Menlo Parkmentioning

confidence: 99%