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Mặc even nói chung be công nhận as the max dương Split biệt, but fields nước người đàn ông này tạo thành an blocks Nước nối liền với nhau trên toàn cầu, normally called chung là Đại dương thế world hay max dương toàn cầu. | 3.6 Exercise 2 Wave Interference 25 3.5.10 Superposition of Waves The superposition of two or more waves of different period and or wavelength can lead to various interference patterns such as a standing wave being a wave of virtually zero phase speed. Interfering wave patterns travel with a certain speed called group speed that can be different to the phase speeds of the contributing individual waves. Interference of storm-generated waves in the ocean can result in waves of gigantic wave heights wave height is twice the wave amplitude of 20 m known as freak waves. 3.6 Exercise 2 Wave Interference 3.6.1 Aim The aim of this exercise is to explore interferences that result from the superposition of two linear waves. To this end SciLab will be used to calculate possible interferences pattern and to produce animations thereof. 3.6.2 Task Description Consider the interference of two waves of the same amplitude of Ao 1 m. The resultant wave can be described by A x t Ao sin sin x t 2 T2 Using SciLab the reader is asked to produce animations considering the following interference scenarios. In all scenarios wave 1 has a period of T1 60 s and a wavelength of Ấ1 100 m. Choose period and wavelength of wave 2 from the following list Scenario 1 wavelength 100 m wave period 50 s Scenario 2 wavelength 90 m wave period 60 s Scenario 3 wavelength 90 m wave period 50 s Scenario 4 wavelength 100 m wave period -60 s Scenario 5 wavelength 50 m wave period -30 s Scenario 6 wavelength 95 m wave period -30 s. These scenarios describe a variety of interference patterns. Scenario 4 for instance leads to a standing wave being the result of two identical waves travelling in opposite directions. This is achieved by prescribing a negative value of the wave period for wave 2. Is this surprising how many different interference patterns can be created by superposition of just two waves. The reader is encouraged to experiment with other scenarios 26 3 Basics of Geophysical Fluid Dynamics 3.6.3 .
