Earthquake Focal Mechanisms--map

Earthquake Focal Mechanisms

Open database file with Geology options popup menu, "Earthquake focal mechanisms" choice.

Actions with focal mechanisms

Plot on map, Earthquake focal mechanisms. Plot with symbols colored by fault type, or the beach balls.
- Each type of earthquake with colors denoting the type of focal mechanism. Get a legend with Plot, Legend menu choice.
- A beach ball for each focal mechanism. This may be too cluttered for a small scale map, or one with a large number of earthquakes. Options to plot on the map.
- Export beach balls to KML.
Plot a single focal mechanism by double clicking an entry in the data table, and picking Earthquake focal mechanism from the popup menu.
Stats, Earthquake Focal mechanisms.
- Options to plot Multiple Faults on stereo nets, can help show groupings of earthquakes with similar focal planes (and hence fault planes). This can be a better option than trying to make a long table.
- Plot all mechanisms shown in the table with the Stats button on the database table, and picking from the popup menu. You should not do this unless the number of records displayed is reasonable, after Filtering the database. This will give you a page with just the focal mechanisms.
Create a table by Hiding fields you do not want to see, and dragging the remaining fields into a good order.
Geology options and pick Focal plane analysis. This allows you to identify ridges as potential fault scarps. You are looking for ridges parallel to the strike of the faults. While you would love to match the dips, this might not be possible or might be harder.

Last revision 11/20/2016