Earthquake Data for Magnitude and Slip Scaling Relations

Data files useful in earthquake scaling relations.  They include compilations of a number of authors.

Data files used in papers [Shaw, BSSA, 2013] and [Shaw, BSSA, 2023].  The first set are .txt electronic supplements from [Shaw, 2013].  The second set are a .csv file from [Shaw, 2023] and a  .csv file from [Biasi, et al., 2013] used in that paper.  Please use the references below if you use the data.

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[Shaw, 2013] files:

Bruce E. Shaw,
` Earthquake Surface Slip-Length Data is Fit by Constant Stress Drop and is Useful for Seismic Hazard Analysis',
Bulletin of the Seismological Society of America, 103, 876, doi:10.1785/0120110258, 2013.

The electronic supplement contains four space-delimited plain text tables of data used in the article.

File descriptions:

Table S1, BSSA-D-11-00258-esupp_TableS1_dyncm.txt, contains magnitude-length-width data reproduced from the WGCEP [2003] hazard estimate, taken from a Table in the Appendix D by Ellsworth [2003] USGS Open File Report 03-214.

Table S2, BSSA-D-11-00258-esupp_TableS2.txt, reproduces a magnitude-area dataset compiled by Hanks and Bakun [2008].

Table S3, BSSA-D-11-00258-esupp_TableS3.txt, is derived from a surface slip-length dataset compiled by Wesnousky [2008]. Some modifications of this dataset have been made, taking into account new LIDAR results of [Zielke et al., 2010] of the 1857 M7.8 Fort Tejon event, and the addition of a new large 2008 M7.9 Wenchuan event [Xu et al., 2009].

Table S4, BSSA-D-11-00258-esupp_TableS4.txt, combines data from events common to Tables S2 and S3, to enable a comparison of events in common.

References

Ellsworth, W. L. (2003), Magnitude and area data for strike slip earthquakes, U.S. Geol. Surv. Open File Rep., 03-214 Appendix D.

Hanks, T. C., and W. H. Bakun (2008), M-log A observations of recent large earthquakes, Bull. Seismol. Soc. Am., 98, 490.

Shaw, Bruce .E (2013)., Earthquake Surface Slip-Length Data is Fit by Constant Stress Drop and is Useful for Seismic Hazard Analysis, Bull. Seismol. Soc. Am., 103, 876.

Wesnousky, S. G. (2008), Displacement and geometrical characteristics of earthquake surface ruptures: Issues and implications for seismic-hazard analysis and the process of earthquake rupture, Bull. Seismol. Soc. Am., 98, 1609.

WGCEP (2003), Earthquake probabilities in the San Francisco Bay Region: 2002 to 2031, U.S. Geol. Surv. Open File Rep., 03-214.

Xu, X., X. Wen, G. Yu, G. Chen, Y. Klinger, J. Hubbard, and J. Shaw (2009), Coseismic reverse- and oblique-slip surface faulting generated by the 2008 Mw 7.9 Wenchuan earthquake, China, Geology, 37, 515, doi:10.1130/G25462A.1.

Zielke, O., J. R. Arrowsmith, L. G. Ludwig, and S. O. Akciz (2010), Slip in the 1857 and ear- lier large earthquakes along the Carrizo Plain, San Andreas fault, Science, 327, 1119, doi: 10.1126/science.1182781.

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[Shaw, 2023] files:

Bruce E. Shaw,
` Magnitude and Slip Scaling Relations for Fault Based Seismic Hazard',
Bulletin of the Seismological Society of America,  2023.

catalogMeanGlobal.csv:   An effort to compile a database from the existing literature of finite source information on recent large and great earthquakes was recently led by a New Zealand group as part of an update to their national seismic hazard model [Stirling, et al., 2022].  They looked globally at M>7.5 shallow earthquakes since 1990, along with an additional subset of the M>7.0 shallow events since 1990 which were less poorly constrained.  These events were compiled through an extensive literature review.
[Shaw, 2023] took that database and used averages over the width, length, area, magnitudes, and dips from the different sources in the literature for the same events to obtain a finite source data set for each event to analyze further. One issue with this dataset is that the complied data used for the averages did not undergo a thorough review, so there may be potential outliers and problems in individual data points.  In aggregate, statistically, it can be useful, which is how it was used.  But caution for any individual data point is warranted.  It is presented as a useful starting point for further development,  It is not a thoroughly vetted or definitive dataset.

AppendixR1_TableR2_Biasi_adapted.csv is adapted from a file compiled and published by [Biasi, et al, 2013].  It contains slip, length, magnitude, and other data for large crustal earthquakes.

References

Biasi, G. P., R. J. Weldon, and T. E. Dawson (2013).  Distribution of slip in ruptures, UCERF3 Appendix F, USGS Open File Report, 2013-1165, Appendix F.

Shaw, Bruce E (2023)., Magnitude and Slip Scaling Relations for Fault Based Seismic Hazard, Bull. Seismol. Soc. Am..

Stirling, M., B. Shaw, M. Fitzgerald, and C. Ross (2022). Selection and evaluation of magnitude - area scaling relations for update of the New Zealand National Seismic Hazard Model, Report to GNS Science NZ, 2022.