Absolutely beautiful paper.

Yes, it is book length, but every page is a joy.

Here are some quotidian introductory references:

https://en.wikipedia.org/wiki/Juan_de_Fuca_plate

https://en.wikipedia.org/wiki/1700_Cascadia_earthquake

P.S. TLDR; TLDW (video below); I live near the coast in Washington state, should I be worried? - Yes.