Fig. 1 | Estuaries and Coasts

Fig. 1

From: Investigation of Spatial and Temporal Salinity Distribution in a River Dominated Delta through Idealized Numerical Modelling

Fig. 1

A) Model grid. The colours indicate grid cell area. The grid resolution becomes finer in the vicinity of the river inlet. White colour indicates inactive grid cells. X and Y are the coordinates of a Cartesian reference system. B) Bathymetry of the idealized river delta. Negative values in white colour denote land (inactive grid cells).The red line delineates the border between the delta and the ocean. It is defined as the line connecting interdistributary areas between channels with no branches where they meet the sea. Results analysis is done for the area upstream of this borderline. Semicircles S1, S2, S3 and S4 mark the areas where the salinity averaging is done in section 3.3. ϕ is the angle of the semicircles’ radius r with the horizontal ro along the delta. A’ is the common centre of the semicircles colormap (Thyng et al. 2016) C) A sketch with the Strahler-Horton number assigned at each delta channel. Colours represent different stream order number. The stream order number decreases downstream with each channels bifurcation. Channels with no branches are 1st stream order. D) The flow hydrograph implemented in the model simulation. Vertical lines indicate the borders between the wet season and two dry seasons (one preceding and one succeeding). E) Monthly salt flux as calculated in section 3.1

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