kw661 t1_j78gocg wrote on February 4, 2023 at 9:50 PM

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

We get landslides every time it rains to one degree or another. Lava is very crumbly.

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

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.