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Across Channel Momentum Balance

h 1. z. LNM. h 2. y. Across Channel Momentum Balance. Geostrophic balance (frictionless, steady and linear motion) in the lower layer. h. h 1. LNM. h 2. z. y. Geostrophic Balance in the upper layer. Geostrophic Balance in the lower layer:. h. h 1. LNM. h 2. z. y.

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Across Channel Momentum Balance

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  1. h1 z LNM h2 y Across Channel Momentum Balance Geostrophic balance (frictionless, steady and linear motion) in the lower layer

  2. h h1 LNM h2 z y Geostrophic Balance in the upper layer Geostrophic Balance in the lower layer:

  3. h h1 LNM h2 z y Margules’ Relation

  4. Effects of the Earth’s Rotation

  5. Observed slope: 2m in 10 km 2 / 104 = 2 x 10-4 f = 8.8e-5 u1 = 0.08 u2 = -0.025 rho1 = 1020 rho2 = 1024

  6. Could you draw the pressure field (isobars) associated with these salinity (density) fields? u1 = 0.10 m/s u2 = -0.05 m/s ρ1 = 1017 kg/m3 ρ2 = 1022 kg/m3 f = 8.8 e-5 s-1 Observed = 2 m in 8 km = 2.5 x 10-4 u1 = 0.08 m/s u2 = -0.06 m/s ρ1 = 1021 kg/m3 ρ2 = 1023 kg/m3 f = 8.8 e-5 s-1 Observed = 7 m in 8 km = 8.8 x 10-4

  7. L Generally, the outflow modified by rotation will be restricted by the internal radius of deformation R, derived from geostrophy: Scaling: Internal Radius of Deformation or Internal Rossby Radius

  8. Estrecho de Magallanes Seno Ballena Ejemplo Efectos de Rotación Seno Ballena

  9. Seno Ballena Estrecho de Magallanes

  10. Flujo Promedio rojo – flujo hacia afuera azul – flujo hacia adentro Depth (m) Dic 2003 Dic 2004

  11. Framework established: Along estuary: pressure gradient balanced by friction Across estuary: geostrophic balance

  12. S0

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