Didnt feel anything in florida
7.8 Magnitude Earthquake Off the Coast of Alaska -
- Thread starter Honka Honka Burning Love
- Start date
Heard back from Grandma, her brother lives in Moose Pass. The tsunami warning being lifted is good, think the best he felt was an aftershock. Given he and my grandparents lived through the great earthquake of 1964, probably wasn't anything to him, he might've slept through it.
Not if they all fell into the ocean beforehand.
Not if they all fell into the ocean beforehand.
The quake in the 60s moved land 60 feet. One in the 50s caused a 300 foot tsunami. Alaska can be nasty.
2020's acting up is leaving me earthquakin' in my boots
A Cardboard Box
kiwifarms.net
Yeah keep up with your education dude. don't rely on survival advice from people that told you to hide under a desk in case of nuclear attack.
...Leaving aside the fact that you’re 100% correct about doorways being a bad place to ride out earthquake, I’m going to go off topic here for a moment because I feel the need to correct the record on this.
The duck and cover nuclear drills were actually one of the most effective civil defense strategies that we had during the Cold War. They weren’t effective if you were at the epicenter of the blast, mind you. You were pretty much fucked if an air burst went off over your head. But an explosion isn’t simply one force but three that all move at different rates: Flash, heat and shock front (pressure) in a small explosion, say from a fragmentation grenade, these are indistinguishable to the human eye. With a nuclear blast, they get spread out over not just distance but time as well.
Case in point, the Teapot Apple 2 test:Note how there is a significant lag in time between the thermal effects of a nuclear explosion burning the paint off of a house and the shock front blasting it to splinters.
The shock front also travels the furthest. The point of the practice is not that a Formica desk is impervious to some canned sunshine going off in the immediate vicinity, Rather, it’s to keep people from being ripped apart by flying glass and wood in the blast over pressure zone which will invariably be larger than than the area irradiated by the gamma radiation contained witin the flash or scoured clean by the sudden thermal effect.
Placeholder: I’ll fire up nukemap and show you what I mean when I get home.
I thought the thing about doorways was that it was the optimal place (grew up in earthquake-frequent area) since it was already holding up the wall due to the frame, and therefore gave a little more support than other areas.
A Cardboard Box
kiwifarms.net
I am intimately familiar with how nuclear explosions work. I am also aware that the LD50 for flash exposure from the second explosion of a nuclear fusion detonation goes out to 12km on a flat plain. The "duck and cover" offers limited protection from only part of the explosion, and only if action is taken immediately.
The exact opposite is true. Turns out cutting a hole in the load bearing portion of a structure makes it weaker. Never ever pass under a doorway during an earthquake. Find something sturdy or thick to hide under like a desk or a bed.
The 1 PSI over-pressure zone extends well beyond that 12km where gamma radiation is a factor. Say a Chinese warhead goes off 5 clicks over Phoenix, centered on the I10/I17 interchange, there are 3.1 million people within that over pressure zone? That's a lot of potential casualties that can be averted by ducking and covering.
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What part of Alaska was this? Could this finally be the San Andreas fault come to knock the left coast into the ocean!? Please say yes!
And Bert the Turtle was very alert . . .
And Bert the Turtle was very alert . . .
ColtWalker1847
kiwifarms.net
Washington, Oregon, and very Northern California are a completely different fault system. The Cascadia Subduction Zone. This was the Pacific plate. A different animal going in the opposite direction.
What are Headers, Cripples, and Jack Studs?
Anyways, most furniture is crap. The only beefy stuff are things like dressers and workbenches and even then it's only the ones that aren't flat-pack. Stuff that's made out of real wood glued and screwed/stapled. Proper joint work. Internal brackets and bracing. Your bed is built strong enough to hold the mattress, box spring, and your fat ass and not much else.
I'll take my chances in the doorway. It was built with proper materials by someone who knew what they were doing. Thank you.
A Cardboard Box
kiwifarms.net
You're just retarded. I'm sorry.
Edit: The overwhelming majority of casualties, fatal and non, that come from earthquakes in first world nations are not from collapses, they are from falling and flying debris. It is ALWAYS safest to DROP, COVER, AND HOLD ON. Any other advice, such as standing under a doorway, or the "triangle of life" meme, are dangerous disinformation. The tried and true Drop, Cover, and Hold On! method has saved more lives during earthquakes than any other educational initiative.
Super-Chevy454
kiwifarms.net
Let's hope they won't confuse "drop, cover" with "duck and cover".
Btw, I saw some clips of "drop, cover and hold on".
ColtWalker1847
kiwifarms.net
Oh look a source that doesn't say what you said, that doorways are the weakest point of a wall. Doorways aren't weak.
Homersexual
kiwifarms.net
Current mood.
An earthquake is a funny thing, even at high magnitudes. During the 1989 earthquake I was in a car stopped at a traffic light which shook hard and moved forward. I told my dad to brake and he yelled "I AM IT'S ALL THE WAY TO THE FLOOR!" When it stopped he drove to a nearby place he knew had a pay phone, handed me some change and said "Call your mother". I ran in and called but the line was dead (everyone in the building was running out and screaming at me to leave but I ignored them). He raced to my mother's apartment (the traffic lights were dead or flashing) and you could see the dust from the plaster that had broken away. Anything on a shelf was on the floor and my mother was screaming at us because she was scared shitless. But that was it. The building was an solid Victorian and it was on bedrock. It got shaken up but that's all.
My dad and I were near an old creek that had been filled in so it hit us harder but when he went back to his place it was a nightmare. He live near Fisherman's Wharf. His building was like my mother's, old and on bedrock so it wasn't damaged but just a few streets away buildings collapsed and gas mains (which at the the time were a hundred years old, made of wood and covered in tar in that area) ignited, causing fires every couple of blocks. The entire Marina district was hosed. The water mains we shut down to replace the gas lines so my brother and I picked up cases of water Budweiser donated. When my dad opened a can and drank he spat it out. "This isn't beer!" he roared (they were in Bud cans). Poor dad, he was stressed out and thought we brought him some brew.
So it depends on where you are. If you're in a solidly, well built building on bedrock or a newer building built to withstand earthquakes you'll almost always survive but if you're on landfill you're boned. The sections of the Bay Bridge and MacArthur freeway that collapsed were on landfill. I remember that a good deal of casualties weren't so much from the earthquake itself but the panic that followed. The bus driver that floored it when he saw parts of the MacArthur breaking off in his rear view mirror survived vs the lady who panicked, drove into a gap on the upper deck of the Bay Bridge and died even after being begged not to by other drivers.
My dad and I were near an old creek that had been filled in so it hit us harder but when he went back to his place it was a nightmare. He live near Fisherman's Wharf. His building was like my mother's, old and on bedrock so it wasn't damaged but just a few streets away buildings collapsed and gas mains (which at the the time were a hundred years old, made of wood and covered in tar in that area) ignited, causing fires every couple of blocks. The entire Marina district was hosed. The water mains we shut down to replace the gas lines so my brother and I picked up cases of water Budweiser donated. When my dad opened a can and drank he spat it out. "This isn't beer!" he roared (they were in Bud cans). Poor dad, he was stressed out and thought we brought him some brew.
So it depends on where you are. If you're in a solidly, well built building on bedrock or a newer building built to withstand earthquakes you'll almost always survive but if you're on landfill you're boned. The sections of the Bay Bridge and MacArthur freeway that collapsed were on landfill. I remember that a good deal of casualties weren't so much from the earthquake itself but the panic that followed. The bus driver that floored it when he saw parts of the MacArthur breaking off in his rear view mirror survived vs the lady who panicked, drove into a gap on the upper deck of the Bay Bridge and died even after being begged not to by other drivers.
I fell into a burning ring of fire.
I fell down, down, down
But the flames went higher.
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