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Quick link to the tsunami view: https://www.tsunami.gov/ Just “watch” level for US west coast, but warning level for Hawaii and Alaska.
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I'm surprised so many people don't understand what tsunamis are. It's a "wave" created by a sudden shift in the Earth's crust. Imagine, suddenly, water on each of side of that split is now at different heights and has to equalize. It's much closer to just removing a dam that is holding back water equal in height to the new difference between the sea floors. What you get is not a "wave" but a wall of water.
> I'm surprised so many people don't understand what tsunamis are. “I’m Surprised so many people don’t know what ‘X’ is/are isn’t a very nice thing to say. Your comment could have done without that, the rest of it would have been fine.
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My favorite is the NHK reporters standing in the middle of absolutely nowhere with their NHK helmets. No matter what the event, there is a reporter wearing a helmet.
Also, the very first thing they say when the camera cuts to them is that they are standing in designated evacuation zone X that's Y meters above sea level. Then the cameraman zooms at the ocean, which is blurry and shaky because they're in the designated evacuation zone Z km away from the coast.
But yeah, the handheld telephoto zoom from a safe location is definitely on the Japanese Disaster TV bingo card. That said, I appreciate that they just keep repeating the same warnings and data, rather than the ridiculous speculation that the US news media engages in when they get bored.
Earlier quoted context omitted.
I'm surprised so many people don't understand what tsunamis are. It's a "wave" created by a sudden shift in the Earth's crust. Imagine, suddenly, water on each of side of that split is now at different heights and has to equalize. It's much closer to just removing a dam that is holding back water equal in height to the new difference between the sea floors. What you get is not a "wave" but a wall of water.
> I'm surprised so many people don't understand what tsunamis are. “I’m Surprised so many people don’t know what ‘X’ is/are isn’t a very nice thing to say. Your comment could have done without that, the rest of it would have been fine.
Japan forecasting tsunamis up to 3m across basically the entire eastern coast. First waves will hit within 10 minutes. https://www.nhk.or.jp/kishou-saigai/tsunami/ https://www3.nhk.or.jp/news/live/ (live, Japanese) https://www3.nhk.or.jp/nhkworld/en/live/ (live, English) The east coast is also where the vast majority of Japan's population lives, and was previously hit by the 2011 tsunami (Fukushima and all that). We'…
A̶F̶A̶I̶C̶T̶,̶ ̶N̶T̶V̶ ̶i̶s̶ ̶r̶e̶p̶o̶r̶t̶i̶n̶g̶ ̶t̶h̶a̶t̶ ̶3̶m̶ ̶w̶a̶v̶e̶s̶ ̶h̶a̶v̶e̶ ̶j̶u̶s̶t̶ ̶s̶t̶a̶r̶t̶e̶d̶ ̶t̶o̶ ̶h̶i̶t̶ ̶J̶a̶p̶a̶n̶.̶ EDIT: Apologies, I misunderstood—a reply to this comment said they were just predictions. (I saw in this video[0] that the first waves had arrived, and assumed the heights would've therefore corresponded to actual measurements. But it's still in the "predictions" section, and I…
What happens to the US West coast?
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This doesn't make sense to me intuitively. It must be a wave. Imagine you have a fault line. There is a left side and a right side to the fault line. If the left side lowers with a shift then that shift MUST be localized to the area around the fault. Because if it wasn't then that means there's an elevation change across the board for everything to the left of the fault. You see how that doesn't make sense? So if the…
https://www.youtube.com/watch?v=wAFYVpX45xs Here's a video of what it looks like from the 2011 event, from the POV of the coast guard approaching it. Waves don't typically look like a sheet has been flapped across one front of the entire horizon of what is visible on the ocean
That's a huge ass wave as it's a pulse traveling on top of the ocean, above sea level.
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Also, the very first thing they say when the camera cuts to them is that they are standing in designated evacuation zone X that's Y meters above sea level. Then the cameraman zooms at the ocean, which is blurry and shaky because they're in the designated evacuation zone Z km away from the coast.
That makes sense, though. To do otherwise would be pretty dumb for a tsunami situation. But yeah, the handheld telephoto zoom from a safe location is definitely on the Japanese Disaster TV bingo card. That said, I appreciate that they just keep repeating the same warnings and data, rather than the ridiculous speculation that the US news media engages in when they get bored.
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Is height the only thing that matters? Presumably 1x 2m wave is less impactful than 10 x 1m waves spread 20 seconds apart?
Despite the common vernacular calling them "waves" they're really more like really really high tides. You're talking about something that happens over, say, 10-90 minutes, not seconds.
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Is height the only thing that matters? Presumably 1x 2m wave is less impactful than 10 x 1m waves spread 20 seconds apart?
Despite the common vernacular calling them "waves" they're really more like really really high tides. You're talking about something that happens over, say, 10-90 minutes, not seconds.