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(Doubt) coriolis force

edited November 2013 in Miscellaneous
Coriolis force normally acts right to the pressure gradient in normal winds. but why does it act opp to the pressure gradient in geostrophic winds?
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Comments

  • not getting your question
  • edited November 2013
    :-S
  • geostrophic winds are actually the result of that opposite motion. imagine a single air particle's movt while the two forces are acting on it...at first, coriolis + PGF = rightward deflectn..along this new line of motion, coriolis will act to move it further rightward until it(coriolis) acts opp to PGF..at this stage, an eqbm is reached and the wind moves parallel to isobar..this is known as geos...wind..fig attached..excuse my bad paint skills :D
  • edited November 2013
    @pansy =D> :D
  • @pansy where did you get that pic from ?
  • somebody had explained it to me earlier, not an innovation.. thanks nyways :)
  • Attaching an extract from ncert phy geo chap 10...
  • In the first para ... The higher
    the pressure gradient force, the more is the
    velocity of the wind and the larger is the
    deflection in the direction of wind. As a result of
    these two forces operating perpendicular to each
    other, in the low-pressure areas the wind blows
    around it.

    Now since it is acting in the right direction..how can it act opp to the pressure gradient in geostrophic wind?
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