Notices
Results 1 to 7 of 7

Thread: Q: Can a volcanic eruption blast rocks into outer space?

  1. #1 Q: Can a volcanic eruption blast rocks into outer space? 
    New Member
    Join Date
    Apr 2008
    Posts
    1
    Can a volcanic eruption blast rocks into outer space?

    Note this would be from Earth not another planet. Also how big would the eruption have to be?


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Ph.D.
    Join Date
    Apr 2008
    Posts
    956
    It would have to hurl rocks with an initial velocity of over 40*000 kilometres per hour (the escape velocity of Earth) upwards into space. Do you think the Earth has sufficient potential energy locked up within its core to cause an eruption violent enough to send rocks hurtling away at such a speed?


    Reply With Quote  
     

  4. #3  
    Forum Junior Zitterbewegung's Avatar
    Join Date
    Dec 2007
    Posts
    217
    Not from earth as the escape velocity is 11km/s so I'd say pretty much "No". For other objects in our solar system the answer is a definite "yes" for e.g. Io.
    I love deadlines. I like the whooshing sound they make as they fly by
    Reply With Quote  
     

  5. #4  
    Forum Bachelors Degree
    Join Date
    Mar 2008
    Location
    Canada
    Posts
    414
    The rock would also have to escape at a particular angle so it didn't bounce off the atmosphere. As a rock has no thrust and it's path would be curved due to gravity if it did reach escape velocity chances are it still couldn't escape.
    "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt" - Bertrand Russell
    Reply With Quote  
     

  6. #5  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,168
    Quote Originally Posted by BumFluff
    The rock would also have to escape at a particular angle so it didn't bounce off the atmosphere.
    This is an issue for incoming rocks, not outgoing rocks.
    Reply With Quote  
     

  7. #6  
    Forum Bachelors Degree
    Join Date
    Mar 2008
    Location
    Canada
    Posts
    414
    Quote Originally Posted by Ophiolite
    Quote Originally Posted by BumFluff
    The rock would also have to escape at a particular angle so it didn't bounce off the atmosphere.
    This is an issue for incoming rocks, not outgoing rocks.
    Ahhh

    Haven't rea;ly looked into it too much myself but when was younger that was what
    I was led to believe.
    "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt" - Bertrand Russell
    Reply With Quote  
     

  8. #7  
    Moderator Moderator
    Join Date
    Apr 2007
    Location
    Washington State
    Posts
    8,416
    Large volcanic eruptions in have been able to eject materials pretty far into the stratosphere but that's far short of escape velocity and mostly smaller particles.

    Not sure if any detailed modeling has been done of mega-volcanoes like at Toba some 70 thousand year ago for whether the explosion propelled rocks into orbit. I doubt anything could leave orbit; the combination of atmospheric friction and large gravity keep pretty much everything but the most highly energized hydrogen atoms at the top of the atmosphere within earth's gravity.
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •