Three-dimensional parabolic equation model for seismo-acoustic propagation: Theoretical development and preliminary numerical implementation

Tang Jun^{1, 2}, Piao Sheng-Chun^{1, 2}, Zhang Hai-Gang^{1, 2, †}

(color online) (a) Geometry of the waveguide in Example C. (b) TL curves of sound pressure at a depth of 30 m along the φ = 0° direction for Cases 1 (upper) and 2 (lower) in Example B. The lower two curves have been shifted downward by 30 dB to avoid overlapping.