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My back yard weather station picked up the shockwave here in the bay area: https://twitter.com/DavidCWG/status/1482451910154014720 I had no idea that was even possible. Crazy stuff.
> the bay area It's always interesting that anyone who lives in a "Bay", refers to their local as THE Bay. For this phenomenon, which is documented as circling the globe, who knows where this could be!
This is an excellent lesson in how shitty my sense of geographic scale is. I would have guessed that the size of the eruption was on par with the size of a small city.
The Pacific Ocean is ginormous (I think that’s the technical term?) I often find myself surprised when I spin a globe (physical or virtual) and compare the expanse of the ocean to my neighborhood of the planet. The scale also makes the history of Polynesian seafaring all that more incredible.
Heard it go bang, 2600km away, echoing through the hills around our place at the top of the South Island of New Zealand. That's pretty staggering to think about it. Then to see other peoples Home Assistants around the world pick up the change in pressure on opposite sides of the planet. Mental, just mental...
What did the “bang” sound like? Was it the sharp crack of thunder close by, the slower rumbling of distant thunder, the sound of fireworks exploding, or would some other description fit better?
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A tsunami is a wave. Not sea level. Waves literally come and go over a period of seconds to minutes. They wobble back and forth without actually moving much water. Sea levels move on the order of hours and days and involve the physical movement of literally hundreds of cubic-miles of water. Raising or lowering a sea level measurement (not a temporary wave) requires far more energy than a volcano. From the link: "List…
Think of it more like a very long period wave, much like a tide, but on a much shorter time period than the tide. Tides, waves (periods on the order of seconds), and tidal waves (or tsunamis) are all fluctuations in sea level. Water can be moved when the waves encounter enclosed bays or harbors. Think of the water level dropping 3 ft over 20 minutes in front of a harbor entrance and imagine the currents that can resu…
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I think you should double check, that sounds reversed. US and Europe have similar area but Europe has quite a lot more people.
Yeah, Europe is way, way more dense. https://www.wolframalpha.com/input/?i=population+density+USA... United States | 36 people/km^2 Europe | 104 people/km^2
Edit: duh. They included all of Russia as “Europe”. I stand corrected.
Earlier quoted context omitted.
A tsunami is a wave. Not sea level. Waves literally come and go over a period of seconds to minutes. They wobble back and forth without actually moving much water. Sea levels move on the order of hours and days and involve the physical movement of literally hundreds of cubic-miles of water. Raising or lowering a sea level measurement (not a temporary wave) requires far more energy than a volcano. From the link: "List…
I don't think anyone - except perhaps you - is suggesting that the eruption caused an actual rise in sea levels.
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Even exactly on the other side of the world, the sound will reach you at different times from different directions due to different pressures, temperatures, mountains, etc. on the way.
But there would be a spot where the pressure waves would cross?
https://tmi.papost.org/the-pepsi-syndrome-saturday-night-liv...
Dr. Edna Casey: It means, Mrs. Carter, your husband, President Carter, has become [ camera zooms in on Dr. Edna Casey ] The amazing colossal president.
Rosalynn Carter: Well how big is he?
Dr. Edna Casey: Well Mrs. Carter, it’s difficult to comprehend just how big he is but to give you some idea, we’ve asked comedian Rodney Dangerfield to come along today to help explain it to you. Rodney?
[ Rodney Dangerfield enters ] Rodney Dangerfield: How do you do, how are you?
Ross Denton: Rodney, can you please tell us, how big is the president?
Rodney Dangerfield: Oh, he’s a big guy, I’ll tell you that, he’s a big guy. I tell you he’s so big, I saw him sitting in the George Washington bridge dangling his feet in the water! He’s a big guy!
Rosalynn Carter: Oh my God! Jimmy! Oh God!
Rodney Dangerfield: Oh, he’s big, I’ll tell you that, boy. He’s so big that when two girls make love to him at the same time, they never meet each other! He’s a big guy, I’ll tell you!
Rosalynn Carter: Oh no! Oh Jimmy! My Jimmy!
Rodney Dangerfield: I don’t want to upset you lady, he’s big, you know what I mean? Why he could have an affair with the Lincoln Tunnel! I mean, he’s really high! He’s big, I’ll tell you! He’s a big guy!
Rosalynn Carter: No! No! No!
Ross Denton: Rodney, thank you very much. You can go.
Rodney Dangerfield: It’s my pleasure. He’s way up there, lady! you know what I mean? [ goes off, leaving Rosalynn Carter very upset ]