zeta.net -------- The file shows 21 readouts from an ocean circulation model program. The area being models is the Miocene seaway. A marine tidal-dominated seaway that formed in the foreland basin of the Alps approximately 20 million years ago. Each time slice with the orthagonal slicer represents 50 minutes of tidal circulation output from the model. The model visualizes surface elevation (tidal heights) in metres over a palaeobathymetry where each node is separated by 12.4km. A progressive walk through the model shows the initial (input) tide for 2m being enhanced as it enters the seaway from the south and then, because of the narrowing of the seaway to the north (and directional change) near Geneva, the tide becomes severely dampened, so that only very low tides are generated in Switzerland (area to the east of the bend). The abundance of tidal deposits in Switzerland supports the hypothesis that there was a tidal input (and therefore an open ocean) into the basin from the northeast. This is contrary to the earlier reconstructions for that area. Additional model runs with a tide from the east support this hypothesis. trange.net ---------- The second visualization is simply the calculated tidal range (in cm) for the model bathymetry over a complete tidal cycle. It also shows how the tides are dampened as they enter into Switzerland. The data is in TRANGE.AVS and visualized with trange.net and trange.fld.