Seismic surface waves travel along the Earth's surface. They can be classified as a form of mechanical surface waves. They are called surface waves, as they diminish as they get further from the surface. They travel more slowly than seismic body waves (P and S). In large earthquakes, surface waves can have an amplitude of several centimeters.
gnaw meaning, definition, what is gnaw: to bite or chew something repeatedly, usually making a hole in it or gradually destroyingâ¦. Learn more.
3. (Animals) any of various unrelated animals that resemble annelids, nematodes, etc, such as the glow-worm and shipworm. 4. a gnawing or insinuating force or agent that torments or slowly eats away. 5. a wretched or spineless person.