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This is the most intense tsunami footage I've ever seen. It purportedly shows the tsunami from the 29 July Mw 8.8 quake in Kamchatka, Russia, filmed in that same region. Source: seismic.kiwi on TikTok, although I've seen this video all over the internet and may originally be from VK or Telegram.

The video quality is poor, but the constructive and destructive interference patterns in the waveforms are clear. Note how, when two waves constructively interfere, they're capable of driving water tens of metres above the shoreline onto even locally high-standing terrain.

The sound is also dominated by mid-frequencies, but I presume the actual noise here would have been almost deafening. More to the point, this video demonstrates that tsunami aren't "waves" per se, but enormous volumes of displaced seawater seeking equilibrium. At whatever cost to the coast.

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