M7.5 South of Alaska
Earthquake occurrence date: 2020-10-19
Depth of earthquake: 40.00 km
*Model was calculated at the date of forecasting
Figure 2: M7.5 South of Alaska earthquake – shear-traction field at the near-, intermediate- and far- field distances from the earthquake.
The M7.5 South of Alaska earthquake happened during the regionally elevated shear-traction field as shown on the Figure 1. On 15th September 2020, we forecasted the elevated possibility for earthquakes in the region of South Alaska for the time period from 17th October 2020 to 23rd October 2020. The strongest one happened on 19th October and was followed by weaker ones in the following days.
The largest effect on the triggering of the earthquake had the intermediate-field effect which started to rise a few days prior to the earthquake.