I have orphaned the mate-equake-applet package (see bug #1104801).

The package description is:
 mate-equake-plugin is a panel applet for the mate panel which monitors
 earthquakes and displays an update each time a new earthquake occurs.
 In addition it can show alerts when heavy earthquakes have happened,
 display maps and webpages with more information, produce lists
 of hourly and daily earthquakes and update a handy signature file you
 can use in your emails. Many features are user configurable.