Is the Cascadia subduction zone a major seismic threat to the Pacific Northwest?

[davenn]

very large P wave arrival

http://www.sydneystormcity.com/seismograms.htm

Prelim report is a M 7.5 Santa Cruz Is region, SW Pacific

 

[StevieTNZ]

http://www.radionz.co.nz/internatio...-6-point-9-earthquake-strikes-solomon-islands

The earthquake struck at a depth of 33 kilometres just before 1:30 this afternoon local time (0228 UTC) 75 kilometres west of Lata and 587 kilometres east of Honiara.

The Pacific Tsunami Warning centre says the threat of hazardous waves has mostly passed, although some changes to tidal patterns near the epicentre are possible.

 

[davenn]

seismogram of the event ( saved before it overwrote itself)

 

[davenn]

http://www.radionz.co.nz/internatio...-6-point-9-earthquake-strikes-solomon-islands

yeah, definitely a bit small in size estimate

 

[Astronuc]

USGS reports mag 7.0 - http://earthquake.usgs.gov/earthquakes/eventpage/us20002yaw#general_summary

10.444°S 165.172°E
depth=10.0 km (6.2 mi) - shallow.

 

[arydberg]

Here is an interesting prediction of one coming.

http://www.newyorker.com/magazine/2015/07/20/the-really-big-one

 

[davenn]

Here is an interesting prediction of one coming.

http://www.newyorker.com/magazine/2015/07/20/the-really-big-one

yes, there's been lost of studies done and more ongoing ones of the Cascadia subduction zone
if you do some searching on youtube ( and stay away from the garbage stuff) you will find some good doco's
done by the USGS and other institutions in the Pacific NW region.

I has been the cause of large historic events and there is no reason to not expect more big events in the future
just when and how big are the difficult Q's to answer

cheers
Dave