Figure 3
From: On the generation of internal waves by river plumes in subcritical initial conditions
Numerical results. Numerical simulations of internal solitary waves generated by a subcritical plume front. (a–c) Density \(\rho\), (d–f) eastward current \(u\) and (g–i) upward current \(w\) with reference density contours superimposed as grey lines. The top row (a,d,g) represents the model initialization (\(t = 0\)) with parameters \(\rho_{0}\), \(\rho_{1}\), \(\rho_{2}\), \(u_{0}\), \(u_{1}\),\(u_{2}\), \(u_{01}\) and \(u_{02}\) as defined in the “Methods” section and given in Table 1. The middle row represents the moment of the first front collapse with the generation of the first pycnocline’s perturbation below (\(t = 5 \,{\text{min}}\)) and the bottom panel represents an entire soliton progression (\(t = 20\,{\text{min}}\)). For the sake of simplicity, only results from run #1 are shown. The inset on density panels (a–c) highlights the front evolution within the dashed boxes. Note that not all the velocity vectors are shown and \(w\) is increased by a factor of 5 for better picture legibility. Only the top 6 m are shown but the model domain is 30 m deep.
