Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Earth's Heat Flow in the Past

  1. Aug 27, 2012 #1

    Drakkith

    User Avatar

    Staff: Mentor

    What effects would having 2-3 times the current heat flow of the Earth have had in the past? Would this have had a significant effect on global temperatures?
     
  2. jcsd
  3. Aug 27, 2012 #2
    The average geothermal heat is 0.061 w/m2 which is some 4 orders of magnitude less than the energy balance of the earth surface. Hence no significant effect.
     
  4. Aug 27, 2012 #3
    Convection in the mantle would have been more vigorous. This would have increased volcanism and seismicity at the surface.
     
  5. Aug 27, 2012 #4
    If it is true that there would have been more volcanism, would this not have had an indirect effect due to more frequent bursts of aerosols + volcanic gasses?
     
  6. Aug 27, 2012 #5

    Evo

    User Avatar

    Staff: Mentor

    It has been known to cause cooling.

    http://en.wikipedia.org/wiki/Volcanic_winter
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook