yhs: Yang, Hauksson, and Shearer refined focal mechanism catalog...

In abarbour/yhs.catalog: Yang, Hauksson, and Shearer (2012) Refined Focal Mechanism Catalog for Southern California

Yang, Hauksson, and Shearer refined focal mechanism catalog for southern California

Description

This is the dataset containing the earthquake catalog.

Format

Classes 'tbl_df', 'tbl' and 'data.frame': 196993 obs. of 22 variables in the HASH format: 179255 earthquakes from the original catalog, and 17738 from the supplemental catalogs.

Details

This dataset consists of the original catalog and a supplement. These can be identified with the src field: src=='orig' for the original and src=='supp' for the supplemental.

Source

SCEC: https://scedc.caltech.edu/data/alt-2011-yang-hauksson-shearer.html

References

HASH:

(1) Hardebeck, Jeanne L. and Peter M. Shearer, A new method for determining first-motion focal mechanisms, Bull. Seismol. Soc. Am., 92(6), 2002. https://doi.org/10.1785/0120010200

(2) Hardebeck, Jeanne L. and Peter M. Shearer, Using S/P Amplitude Ratios to Constrain the Focal Mechanisms of Small Earthquakes, Bull. Seismol. Soc. Am., 93(6), 2003. https://doi.org/10.1785/0120020236

See Also

yhs.catalog

Examples

require(dplyr)
print(yhs)

# source and quality distribution
print(tbl <- with(yhs, table(Source, Quality)))
plot(tbl)

print(tbl2 <- with(yhs, table(Year, Quality)))
plot(tbl2)

# plot all locations in space
plot(Lat.deg ~ Lon.deg, yhs, pch=".")

# highlight the supplemental catalog in red
plot(Lat.deg ~ Lon.deg, yhs, pch=".", col=as.numeric(factor(Source)))

abarbour/yhs.catalog documentation built on April 6, 2022, 5:56 p.m.