c0 1480[m/s] "Speed of sound in water"
f0 2[kHz] Frequency
depth 100[m] Depth
phi 30[deg] "Source location angle"
lam0 c0/f0 Wavelength
d_source 1000[m] "Distance from the source"
p_ref 1[Pa] "Reference pressure"
k0 2*pi/lam0 "Wave number"
L 62[m] "Submarine length"
kL k0*L "Acoustic scale k*L"