rouneezie t1_j78pnw5 wrote on February 4, 2023 at 10:57 PM

Reply to comment by kw661 in The tallest sea cliffs in the world, Molokai's north shore, Hawaii [OC] [3609 x 5541] by Chipotle42

What boggles my mind is that the Nu’uanu slide, when it took out half of the Ko'olau range, is suspected of having created the largest tsunami wave ever at 100m+ in height!

With great tropical beauty comes great geologic risk, I guess.

SaltAd2986 t1_j794ewl wrote on February 5, 2023 at 12:51 AM

actually, although 100m+is very tall. this tsunami in AK was estimated at 1,720' or 520m...wow

https://www.alaskasnewssource.com/2022/09/01/fault-facts-worlds-largest-tsunami-was-our-backyard/#:~:text=Alaska%20is%20home%20to%20the%20largest%20tsunami%20ever%20recorded.&text=ANCHORAGE%2C%20Alaska%20(KTUU)%20%2D,who%20died%2C%20and%20four%20survived.

Imkindaalrightiguess t1_j79ddef wrote on February 5, 2023 at 2:05 AM

Tsunami from the Chicxulub impact (dinosaurs) estimated at 1500 meters

Is this the biggest tsunami ever on earth?

I assume no tsunamis during the hadeon period cause no oceans but could the Vredefort impact have caused a larger wave?

RECTUS_ERECTUS t1_j79l8iv wrote on February 5, 2023 at 3:11 AM

Its very hard to tell. We dont even have undisturbed rocks from the hadeon.

badgerandaccessories t1_j7cwspu wrote on February 5, 2023 at 9:32 PM

That doesn’t really count since the wave only went 600 feet to the other side of a bay. The wave wasn’t 1720 feet tall, just that’s how far water splashed up the mountain on the other side.

In your link they even say a small boat survived by letting out enough anchor line and being able to ride the wave. No chance they did anything over a 150 foot wave like that.