Phasor Wave-Field Simulation Providing Direct Access to Instantaneous Frequency: A Demonstration for a Damped Elastic Wave Simulation

In this work, we describe and simulate a wave field as a phasor field by simultaneously propagating its real and imaginary parts. In this way, the unique phase angle is directly available, and its time derivative determines the instantaneous frequency. We utilize the concept to describe damping in elastic wave propagation, which is of high importance in several engineering and research disciplines, ranging from earth science and medical diagnosis to physics.

Numerical Wave Model under Different Forced Wind Fields

The wave numerical forecasting model is based on the third generation wave model WAVEWATCHIII, which the analysis wind field of NCEP and the mixed wind field of QSCAT/NCEP are used as the forced field. With the same parameters, the wave model WAVEWATCHIII is established in wave field simulation to China seas. The analysis data of effective wave height from the National Oceanic and Atmospheric Administration (NOAA, USA) is adopted as the verification. It shows that the WAVEWATCHIII model is good agreement with the wave field date using two input wind data. And the QSCAT/NCEP is higher agreement with field data, which means that it is more suitable for wave numerical simulation for China seas.