Preface to the Focus Section on Historical Seismograms

2020 ◽  
Vol 91 (3) ◽  
pp. 1356-1358
Author(s):  
Allison L. Bent ◽  
Diane I. Doser ◽  
Lorraine J. Hwang
Keyword(s):  
Historical Seismograms

Microfilming of Historical Seismograms from the Mount Hamilton (Lick) seismographic station

1983 ◽  
Vol 73 (4) ◽  
pp. 1197-1202
Author(s):  
Robert A. Uhrhammer
Keyword(s):  
University Of California ◽  
Preparation Time ◽  
The University ◽  
Historical Seismograms

abstract The seismograms from the Mount Hamilton, California, seismographic station were microfilmed as part of the Historical Seismogram Filming Project. All of the available smoked paper and photograpic seismograms from the Mount Hamilton station (more than 35,000 from 6 June 1911 through 30 June 1962) were prepared and microfilmed onsite at the University of California, Berkeley. The preparation time averaged 2 man-minutes/seismogram, and the overall cost averaged out to $1.05/seismogram.

Historical Seismograms and Earthquakes of the World

Eos ◽  
1988 ◽  
Vol 69 (36) ◽  
pp. 836
Author(s):  
Duncan Agnew
Keyword(s):  
The World ◽  
Historical Seismograms

scholarly journals Erratum to: Seismic moment of the 1891 Nobi, Japan, earthquake estimated from historical seismograms

2007 ◽  
Vol 59 (8) ◽  
pp. 987-987
Author(s):  
E. Fukuyama ◽  
I. Muramatu ◽  
T. Mikumo
Keyword(s):  
Seismic Moment ◽  
Historical Seismograms

scholarly journals On the recovery and analysis of historical seismograms

2013 ◽  
Vol 56 (3) ◽  
Author(s):  
Barbara Palombo ◽  
Nicola Alessandro Pino
Keyword(s):  
Seismic Risk ◽  
Standard Technique ◽  
Source Area ◽  
Seismic Source ◽  
Correct Interpretation ◽  
Source Information ◽  
Specific Analysis ◽  
Quality And Reliability ◽  
Definition Of ◽  
Historical Seismograms

The analysis of historical seismograms has proven to be a fundamental tool to help with the definition of the seismic risk in specific regions. Indeed, modern quantitative reappraisal of relevant earthquakes that occurred before the 1960’s; i.e., prior to both the developments of modern recording instruments and the theoretical progress, has been essential for the assessment of the seismic potential of a source area. However, due to the characteristics (transducing and recording) of the old analog seismographs, the data available are affected by intrinsic uncertainties, and errors can be introduced during the processing of waveform digitization. These drawbacks can seriously influence the quality and reliability of an investigation. In general, no standard technique can be applied when dealing with historical seismograms. Thus, specific tests and cross-checks have to be designed to estimate the limits of each specific analysis. Here, we aim to provide an overview of the whole procedure while focusing on the most crucial steps, from the seismogram recovery to the application of modern techniques for the retrieval of the seismic source information. We also suggest possible checks for the robustness of the data and for the available instrument characteristics, with a description of the effects of various uncertainties on the results that can be obtained. We thus provide useful indications for the analysis of historical seismograms, and also for the correct interpretation of the resulting characteristics of the seismic source.

Sign in / Sign up

Export Citation Format

Share Document