Earthquake swarm off Oregon coast has been ‘building up’

PORTLAND, Ore. (KOIN) – Upwards of 60 earthquakes have been recorded off the Oregon coast – starting Tuesday and continuing through Wednesday.

The quakes occurred along the Blanco Fault Zone –Oregon’s most active fault. The biggest reached a magnitude of 5.8.

Despite the number of quakes, experts say there’s no cause for concern as it’s commonplace for earthquake swarms to occur in this zone, KOIN 6 News Chief Meteorologist Natasha Stenbock said.Shaky ground: Faults right in our backyard 

Portland State University geology professor Scott Burns explained how the magnitude of these quakes affects the aftershocks.

“They’re farther out and haven’t had huge numbers in that area, so they’ve been building up for a long time. The other thing is when the value is higher, the biggest one was 5.8. The bigger the quake, the more earthquakes after that will occur. So, there will be a lot more of them. The numbers are related to the size of the biggest one,” Burns explained.

It is also important to note that due to these magnitudes, there are no tsunami concerns. Burns told KOIN 6 News that the quakes would have to reach magnitudes greater than eight along that fault for a tsunami to occur.

Burns said despite the recent quakes “the bottom line – they’re not ones we need to be worried about.”…….More Here

Click here for reuse options!
Copyright 2021 Hiram's 1555 Blog