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Welcome to the evsel wiki!

This is a tool to fetch, flow, filter, reformat and plot earthquake catalogs. The tool to plot earthquakes is written in C + pgplot library. It has coast lines + tectonic plates included. The tool to fetch, flow, filter and reformat the catalogs is written in BASH SHELL script language with extensive use of AWK.

To install it:

% git clone https://github.com/marcelobianchi/evsel.git
% cd evsel
% gedit Makefile # Fix the installation path pointed by PREFIX
% make # Will need "cmake" installed !
% cd build
% make
% make install # This is not necessary to test the code .. just keep on reading

To test it:

% source ../bshm/evsel.bshm
% evgrab 2013
% evgrab 2014
% evflow | ./evgraph/evgraph map plates

The result would be something line this:

Or even, something like this to make a longitude profile cross-section along the Pisagua Earthquake sequence

% evflow | evrangelat -21 -18 | evrangelon -75 -65 | ./evgraph/evgraph lonsection

That results in: