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More8/26/20
Or it was coming from deep underground, maybe around 3.5 on the Richter scale. Evidently we are now having warms of small quakes here that are too faint for most people to feel. They think these are shallow quakes caused by stresses in the crust caused by oil and gas extraction, and fracking getting into some faults and acting like a lubricant causing them to slip.
But if the vibration is at the right frequency, it will cause resonance and thus apparent amplification at the surface.
After all, the whole west Coast area is part of the Ring of Fire.
8/27/20
8/27/20
Well, Seattle is entirely built on a geologically recent lahar flow, which all that is needed is a good sized quake to cause soil liquefaction and massive destruction.
Not sure about how seismically active the area around Portland is, but soil liquefaction is a huge problem in that whole region. That is what did so much damage in the 1989 earthquake in San Francisco, and before that, the 1906 earthquake.
8/27/20
8/27/20
1989 was bad. I knew someone living there whose house was so badly damaged they walked away. Eventually rebuilt, sold it and got out.
8/27/20
I've never been in a quake strong enough to really have it click "earthquake", although there was an incident over a decade ago where the microwave oven, which due to the poor architectural design of the place, hangs from the ceiling with some chains. I noticed it swinging slightly but didn't feel anything, kind of like maybe from a very heavy wind gust.
But it turned out there had been a gigantic explosion at a (fortunately) unmanned gas processing plant about 45 miles away about a couple of minutes before. It might have been such a shock wave through the ground that it set up some vibrations. I found that out a couple of hours later, and kind of connected the dots then.
8/27/20
I remember hearing a lot of discussion about it on the 2 meter band local repeater as it unfolded, then got home and turned on the news. Of course the phrase that was first to surface was what everyone had been primed to expect decades ago - "The Big One?"
It's one of the reasons that California was a "no go" area since I was little - because I'd always heard it was going to fall into the Pacific at any time. Then of course I learned about tsunamis, soil liquefaction, and that while plate tectonics meant the sliding into the Pacific would take longer than modern humans have been walking the earth, the 1906 earthquake was just a "preview of the coming attractions - now in Cinemascope and infra surround sound".
So I wasn't going to even consider investing in an area overdue for "a whole lotta shakin' goin' on" and figured anyone was a fool for living there, or especially for building there.
And of course it was just a matter of which flattened the area first - The Big One or the Soviet nuclear missiles. And I go - "nope - not going to go to a place that is already doomed".
8/27/20
8/27/20
Hmmm
Well there were the shadows of people on my bedroom wall that weren't actually there. They didn't utter any annoying sounds though.
I did have a job inspecting status of empty cavities in a coal mine. Nothing like shutting off your cap lamp to take a nap on break and listen to the timbers creek and crack then have one split in half from the weight. That sure woke me up.
Then there was the time in another coal mine where the floor in the drift raised up to pin a continuous miner machine and in doing so saved us from being squished.
But the worst sound I heard was when the earth made a methane fart while your busy with your work. It's a sound that's very explainable as to why when a new hire would think it's okay to sneak a cigarette underground to light up, and get his nicotine fix, he would be beat to a pulp.
Credit...The New York Times ArchivesSee the article in its original context from April 17, 1981, Section A, Page 1Buy ReprintsTimesMachine is an exclusive benefit for home delivery and digital subscribers.About the ArchiveThis is a digitized version of an article from The Times's print archive, before the start of online publication in 1996. To preserve these articles as they originally appeared,...
Read more from www.nytimes.comI made my concerns into protests and was told to shut up. So I left this place 6 months before the explosion happened. Watched it on the evening news like everybody else.
All my sounds heard have been real. And the shadows of people on the wall are always polite but are always silent.
Hopefully people at this forum will finally understand why I hate the lethal effects of corruption and why we can't just brush it off in a lazy choice of ignorance.