Does the Pugent Sound have anything like the Tualatin Basin?
Long ago a giant flood from the columbia river gorge filled a large basalt valley with hundreds of feet of clay silt. Today there are many hundreds of thousands of people living and working on top of the clay silt, including the entirety of Nike world headquarters and the majority of Intel's fabs.
When the earthquake hits, the entire basin is predicted to liquify, just like this:
Long ago a giant flood from the columbia river gorge filled a large basalt valley with hundreds of feet of clay silt. Today there are many hundreds of thousands of people living and working on top of the clay silt, including the entirety of Nike world headquarters and the majority of Intel's fabs.
When the earthquake hits, the entire basin is predicted to liquify, just like this:
https://www.youtube.com/watch?v=3NSXmTfASM0