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Study on the frontal zone of sea water inflow into Vistula Lagoon, analyzing density fields, current flow, and streamlines. Presented at an international conference on fluid fluxes and structures in St. Petersburg in 2003.
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International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Map of measurement polygon in Vistula Lagoon and the Baltic sea coastal zone Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Salinity, Vistula Lagoon. Stations 318 – v36. 09.07.1997 Distance along tow line, km Temperature, Vistula Lagoon. Stations 318 – v36. 09.07.1997 Distance along tow line, km Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Typical view of a head of gravity current in laboratory flume (Anuchin&Gritsenko, 1985) Current head structure, after Benjamin (1968) and Simpson (1982, 1986) Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 • Simulated (XZ) current: • streamlines and • density distribution • b) vorticity and density Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Simulated current U0 H0 0 grid = 701 x 121 x=0.05 Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 U0 = 3.0 сm/s H0 = 3.0 сm 0 = 0.001 g/сm3 = 10 0 Evolution of density field Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 U0 = 3.0 сm/s H0 = 3.0 сm 0 = 0.001 g/сm3 = 10 0 Evolution of density field and stream function Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 U0 = 3.0 сm/s H0 = 3.0 сm 0 = 0.001 g/сm3 = 10 0 Evolution of density field Slipping condition at the bottom Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 U0 = 3.0 сm/s H0 = 3.0 сm 0 = 0.001 g/сm3 = 10 0 Evolution of density field and stream function Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Fine structure of frontal zone • Simulated (XZ) current: • horizontal density • gradient (green region) • and streamlines (blue) • b) Vertical density • gradient (green region) • and streamlines (blue) Blue background of streamlines is visible through transparent area of density gradient distribution where the last is negligibly small Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 • Simulated (XZ) current: • density gradient module • (green region) • and streamlines (blue) • density gradient • along streamline • (negative - green region, • positive – pink) Blue background of streamlines is visible through transparent area of density gradient distribution where the last is negligibly small Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Density distribution, stream lines and density gradient along streamline Density distribution, stream lines and density gradient along streamline (green- negative, pink –positive) Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Density distribution, stream lines and velocity module (red lines) Density distribution, and velocity module (red lines) Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Vertical profile of density, horizontal and vertical components in head part of gravity current Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Motion of front of gravity current along the slope Xfront (t) Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Si = area{ i }, Si = Si (time) An increase in time of the square between iso-picnes (вовлечение) Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Ratio of areas under iso-pycns at following and at previous time steps Rate of increase of areas under corresponding iso-pycns at following and at previous time steps Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Y U0 L0 0 X Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Density and vorticity distributions on the blue background of streamlines Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Temperature, salinity and density profiles measured across the front of marine water intrusion into the fresh-water lagoon Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Temperature, salinity and density profiles measured across the front of marine water intrusion into the fresh-water lagoon Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 Lower panel: derivative of density along streamline (blue – streamlines, red – iso-pycns) Upper panel: Velocity module distribution versus density iso-lines (blue – fresh water, gray – saline water) Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon
International conference “Fluxes and Structures in Fluids” St.Petersburg, 22-27 June 2003 This work has been supported by INTAS project № 460 Mass transfer through submarine canyons Gritsenko V.A., Chubarenko I.P. On a fine structure of fronral zone of sea water inflow into a lagoon