Slip of almost 50 meters for Japan quake

The figure below from the University of California at Santa Barbara shows a maximum slip of almost 50 meters (165 feet) on the fault accompanying the Japan earthquake. The star shows the epicenter of the main shock. Red dots are the aftershocks (M>3). The black line indicates the major plate boundary

Oher interesting resources for this event, some of which I will return to, are referred to from the IRIS web page.