Well then do the math, show us how and what velocities of up lift you will need to create a surface disruption in 7000 feet of water. Harry didn't give you any clues.
Ah! a big meteor? I think I indicated this is possible. Extraterrestrial body. But then that doesn't have squat to do with Cascadia. PS Maybe I should have said simply terrestrial body.
No but it does mean that we should not build police stations, fire stations, hospitals, nursing homes, or schools in tsunami zones. They should be built in the clearly marked evacuation zones along the coast. Then there is greater prevention from multiple disaster scenarios.
Now you will get no argument from me here. Like I said earlier in this thread about driving through Rockaway. I would not live there! Same when I was looking for a place in Bandon, No way down on the lower plain. I am up on the hill near the top at about 200'. Since I have live there now quite sometime, I discover a distinctive layer about 2' down about 4 to 6" thick that probably was laid down by a tsunami, who knows when. It is at about the 155' level on my property and less, not above height. I doubt it was a Tsunami that reached that high though, as I expect the whole property has raise considerable since it was laid down. The uprising of the west coast continues from Cascadia Eastward, slowly but surely.
BTW, this little discussion is just about like what Van Dorn and I had nearly 45 years ago now. So tell me again about how I remind you of Harry?
Yes, well many subjects and especially specific questions where disagreement is very possible with most of us. One I had with a well known Naval Architect some years back. He reviewed my plans for the MarAzul, as I requested, and came to the conclusion that such a craft could not actually be constructed. My son was there at the time when he delivered the hard news. I thanked him and found a graceful way to exit. My son said, Dad! What Now??? I said not to worry. We just found out he doesn't know how to do it. We do.
Where I live I'm at least 75 miles from the worst possible volcanic damage...seismologists say the overflow will end 50 miles east of Springfield in Lane County if the 3 live puppies in the Cascades go off like Mt St Helens on us. and I'm about 40 miles from the coast....planning is everything...you should see my bunker...if there is a tsunami I'm hoping the Mar Azul washes up in my yard somewhere
If you mean the beach, I agree. I wouldn't even live up a river valley very close. Everything on the Oregon coast below 100 feet is in potential danger. Everything below 50 feet is just at risk any day, but as long as you know... It is interesting where places have been wiped out by tsunami. Crescent City just over the boarder in CA, the harbor surge just wiped the place out in the 64 Alaska quake. A large chunk of the Gulf of Alaska up raised maybe 50 ft. causing a focalized tsunami. Not much damage on the Oregon coast, but Cresent City Harbor, it raised Holy hell. They have all new great facilities now paid for by the Federal government. Damm! I wish the Bandon Harbor was as good.
I once dated a girl who's parents lived in Raymond, Washington. They told me a story of how they retired early in the evening to get up early and dig some clams at a low tide. They got to the coast and noticed no one there. Then they were amazed at how low the tide was. They got their limit of very large clams very fast. As they were walking back to shore the water started rising. The water got up to their ankles, then it was up to their knees, they started walking faster and faster. When the water got up to their waist, they dropped their shovels and clams and headed for shore as fast as they could go. It got up to their necks before they bagan to get out. When they got home they turned on the news and learned that people had been warned the night before that a tsunami was headed for the coast and to stay away. They had barely escaped with their lives.
Oh btw Sly, undersea landslides never create a tsunami. It takes a displacement event which changes the the volume of the basin. Rearranging the rubble won't disrupt the surface. Since sea water can accelerate smoothly at the rate of gravity, then it can adjust to rubble changing chairs without notice.