🏠 地震! Earthquake! 5.2 Mb, registered by NEIC,alomax, 2024-10-31 16:18:16 UTC (new moon), on water (True), Taiwan (23.57, 121.6), ↓5 km likely felt 170 km away (in 花蓮市, 吉安鄉, 臺中市, 光復鄉, 壽豐鄉…) by 3.8 million people (www.seismicportal.eu)

^2024-10-31T16:45:14Z

Suppose the big Cascadia earthquake hits. I work in one of the Amazon HQ high rises in downtown Seattle. My kids go to a daycare in Burien, a city just south of Seattle. Am I just supposed to accept that if that earthquake hits me and my kids are just going to die? (Me stuck in the high rises and no help to come give food/water) and my kids drown at daycare because they can’t get to a higher elevation? (Their daycare is about 370’)

I keep hearing about a 100’ wave but is that just at the coastline? I’d like to be the most prepared, but I’m not sure what to do if it happens. I know the city will be gridlocked so there’s no way I can get to my kids…

I know this sounds very extreme but again, just trying to prepare…

Can anyone explain how this happens - or what may have happened in this case? We had 4 earthquakes last night - 3 of them listed as -0.1km depth, and one was listed at 0km depth.

What's the dealio? -0.1 km means it happened 0.1 km ABOVE the surface of the ground. So, what, a bomb went off?

https://preview.redd.it/n5h8zjw6uixd1.png?width=548&format=png&auto=webp&s=0d20a9bf20ca2c893bccfa79bf1f07bc912013c1

Obviously she could be misremembering the date, but I’m having trouble finding any earthquake from that time that would have toppled all the chimneys in a small city. Appreciate any suggestions!

🏠 地震! Earthquake! 5.4 M, 2024-10-27 10:21:24 UTC (crescent moon), on water (True), Taiwan (24.0, 120.1), ↓100 km likely felt 300 km away (in 臺中市, 彰化市, 鹿港鎮, 二林鎮, 和美鎮…) by 46.8 million people with maximum intensity Shindo 2 (www.kmoni.bosai.go.jp)

^2024-10-27T10:26:20Z

🏠 地震! Earthquake! 5.3 Mb, registered by alomax, 2024-10-27 06:55:55 UTC (daytime) on water (True), South China Sea (20.71, 116.31) ± 13 km, ↓89 km likely felt 270 km away (in 汕尾市…) by 2.9 million people (alomax.free.fr)

^2024-10-27T07:25:11Z

Earthquakes are caused by the movement of tectonic plates, as the move they sometimes release stress in seismic waves. When 2 waves collide with eachother, they either combine into a stronger wave in a process known as Constructive interference, or cancel out completely in Destructive Interference If they are of opposite wavelengths.

Heres my question.
Is it possible to cancel out an earthquake by shooting out a opposite wavelength into the ground to that of the earthquake’s?

And if so, is it possible to implement this procces into a machine which could read the wavelength and transfer out one of opposite, and quite literally stop the earthquake from ever reaching cities?

Edit: To clarify on my second question. This machine would be placed underground. Also creating waves that strong would be expensive but would it rather be a couple hundred thousand dollars or billions.

This is prob a common question, I just want to learn more about this and after learning about destructive interference, this has been on my mind all week.

I see moments like this on seismograms sometimes (example Mt. Ranier today at 05:55 UTC).

It is similarly showing on Mt. St. Helens and Mt. Hood and I’ve seen other times where they register on all seismograms in the PNW. The “blip” is dark blue and lacking any of the colors showing normal earthquake movements but still a very defined anomaly in the same shaoe as a quake.

At the exact same time as this blip, people in Portland reported hearing a very loud boom. We get mystery booms kind of regularly here that not all of them are random fireworks.

Is this dark spot the result of sound waves? Gasses escaping? Something else? No earthquake is reported at that time but curious if any type of geologic activity accounts for these blips and/or noises.

Yesterday my house was suddenly shaken, I felt a single jolt and heard some sounds maybe from walls or furniture. It lasted just for a second or less, much shorter than any other earthquakes I experienced. Not being sure if it is even an earthquake, I checked it online, and found that an epicenter was just a few km from me. Is it how "nearby" earthquakes are usually felt?

🌎 Sismo! Earthquake! 6.0 Mgqm, registered by GlobalQuake, 2024-10-25 14:46:22 UTC (daytime) on land, Brisas Barra de Suchiate, Chiapas, Mexico (14.07, -92.71) likely felt 290 km away by 217600 people (localhost:38002)

^2024-10-25T14:48:26Z