EARTHSS 17 Lecture Notes - Lecture 5: Rhyolite, Fjord, Basalt
7 Nov 2016
School
Department
Course
Professor
Document Summary
A large rockfall into the fjord: why we do not use boats to serve as a means of issuing tsunami warnings. Tsunami waves are only about a meter high in the open ocean, making them hard to feel as they pass under boats. Tsunami waves only build in height as the depth of the water decreases, so in the open ocean they cannot be seen. Even really large tsunamis have such long wavelengths that the wave passes as a large swell under the boat: true about tsunami ocean min. Tsunami waves are shallow water waves that feel the bottom even in the deep. Due to their extremely long periods, some waves can crash onshore for up to 20. Wavelength shortens and height increases as the wave nears the shore. Wave move slower as they move closer to land: what are true concerning tsunami waves once they are generated.
