Was the 1700 Cascadia earthquake one or many ruptures?

Diego Melgar

University of Oregon

Click HERE to watch the zoom recording of this presentation

In this presentation we’ll explore a major question about the 1700 Cascadia earthquake: Was it one big earthquake, or a series of smaller ones happening close together in time? Understanding this is crucial for forecasting future earthquakes and tsunamis in the Cascadia region. Here we’ll use computer models to examine the different possibilities, using extensive historical earthquake data to rule specific scenarios as likely or not. In the end, we’ll conclude that we can't be certain if the 1700 earthquake was a single event and that the possibility that it was a sequence of earthquakes needs to be considered as equally likely.

Please join us at:

Worthy Brewing (eastside location)

495 NE Bellevue Drive, Bend

In the Beermuda Triangle Room

5:30 pm social hour

7:00 pm presentation

COGS talk are free and open to the public -- all are welcome! Please join us for the social hour before the presentation.

All presentations are also live-streamed through Zoom. There will be a registration link at the top of this page as we get closer to the date of this presentation.