A type of these phenomena is significant only within distances on the order of the “radius of deformation.” The Pierson-Moskowitz spectrum describes the distribution of these phenomena when a system is in a state of equilibrium described as “fully developed.” A model of these phenomena sets zero equal to [read slowly] the time derivative of u plus the third spatial derivative of u plus 6 times u times the spatial derivative of u. The speed of these phenomena is given by the square root of the quantity (*) g times d under an approximation that holds depth to be much less than the horizontal scale of motion. The rotation of the Earth produces large-scale examples of these phenomena named for Kelvin and Rossby. Examples of these phenomena called solitons are sometimes identified (10[1])with unusually large “rogue” ones (10[1])of them. For 10 points, name these phenomena whose heights measured from (10[1])crest to trough. ■END■