Geomagnetism
Extreme Events
Extremely large earthquakes, volcanic eruptions, magnetic storms, and other hazardous geophysical events are rare. And yet their occurrence can be devastating for humankind. Since direct historical records of extreme geophysical events are few, the interpretation of their statistics must be conducted with caution. Estimates of occurrence rates are useful, but the "error-bar" measures of uncertainty are also needed.
Date published: February 14, 2019
Status: Active Magnetic Disturbance Event Summaries
Select an event to view a summary.
Attribution: Natural Hazards, Geomagnetism Program
Date published: July 25, 2018
Status: Active Overview
Examples of extreme-event work published by USGS scientists are on the Publications tab.
Contacts: Jeffrey J Love