When a large earthquake occurs, geophysicists have many tools at their disposal to determine the properties of the fault (or faults) that ruptured during the earthquake.
Recently, many national news outlets picked up a story about the earthquake and tsunami threat posed by Alaska’s Shumagin Gap. The headlines were frightening.
After a long spell with few earthquakes strong enough to be felt, over the last ten days we've had 3 earthquakes larger than magnitude 6, seven larger than M5, and more than fifty larger than M4.
