These pages illustrate an investigation of seismicity in China

Asian topography from gtopo30

The digital topography comes from the GTOPO30 dataset:
http://edcwww.cr.usgs.gov/landdaac/gtopo30/gtopo30.html

Historic Seismicity

Here is the dataset from an important reference:
with annotation
text ready for gmt

Plot for China with no topography:

Plot for China with topography:

Instrumental Seismicity

Here is the seismicity dataset from the CNSS:
http://quake.geo.berkeley.edu/cnss/catalog-search.html
BIG FILE! (1.2 Mb)
Plot for China with no topography:

Historic and Intrumental seismicity together

GMT script for above

We use GMT to plot
script

Local seismicity and topography along the central Altyn Tagh fault

GMT script for above

script

Everything together!

Here is the sweet total plot:

And it was plotted all with one script in GMT:
script

How about some different projections?

I thought that it is probably better to use a Lambert projection for the big map, so here are some different plots (not all have the lower one as Lambert projection as well.

postscript

Paleoseismicity

Here is a Chinese dataset of paleoseismicity
I looked a bit at the time and magnitude distributions:

Here are only the paleoseismic events with the events younger than 2500 years colored white:

small postscript
postscript

Here is paleoseismicity and historic and instrumental seismicity:

small postscript
postscript

Here is the GMT script
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Pages maintained by
Prof. Ramón Arrowsmith

Last modified May 3, 2000