Notices
Results 1 to 6 of 6
Like Tree1Likes
  • 1 Post By Stanley514

Thread: What is Enceladus heat source?

  1. #1 What is Enceladus heat source? 
    Forum Professor
    Join Date
    Apr 2009
    Posts
    1,120
    Saturn satellite Enceladus produces huge amount of heat at its South pole.
    Icy Saturn Moon Pumps Out 15.8 Gigawatts of Heat Power | Enceladus & Saturn Moons | NASA & Solar System | Space.com
    Usually the origins of this heat are explained through tidal heating. But why tidal heat is concentrated at
    South pole? Is it anomaly? And also, what triggered this heating relatively recently by geological scale?
    I mean, if this heating associated with geysers would exist for billions of years, then Enceladus would evaporated
    into the space already?


    grmpysmrf likes this.
    Antislavery
    Reply With Quote  
     

  2.  
     

  3. #2  
    not ADM!N grmpysmrf's Avatar
    Join Date
    Jan 2014
    Location
    Southern California
    Posts
    1,564
    Quote Originally Posted by Stanley514 View Post
    Saturn satellite Enceladus produces huge amount of heat at its South pole.
    Icy Saturn Moon Pumps Out 15.8 Gigawatts of Heat Power | Enceladus & Saturn Moons | NASA & Solar System | Space.com
    Usually the origins of this heat are explained through tidal heating. But why tidal heat is concentrated at
    South pole? Is it anomaly? And also, what triggered this heating relatively recently by geological scale?
    I mean, if this heating associated with geysers would exist for billions of years, then Enceladus would evaporated
    into the space already?
    Is that the moon that its topography constantly changes "daily" based on gravitational force of saturn? If that's the case it could be caused by the friction based on the constant stretching and squeezing of the entire moon. I thought Europa was the only other body thought to have water... Enceladus, huh?

    Forget Mars, sink our money into Europa!!!!

    Europa <3


    Reply With Quote  
     

  4. #3  
    Moderator Moderator Markus Hanke's Avatar
    Join Date
    Nov 2011
    Location
    Ireland
    Posts
    7,179
    Quote Originally Posted by Stanley514 View Post
    Saturn satellite Enceladus produces huge amount of heat at its South pole.
    Icy Saturn Moon Pumps Out 15.8 Gigawatts of Heat Power | Enceladus & Saturn Moons | NASA & Solar System | Space.com
    Usually the origins of this heat are explained through tidal heating. But why tidal heat is concentrated at
    South pole? Is it anomaly? And also, what triggered this heating relatively recently by geological scale?
    I mean, if this heating associated with geysers would exist for billions of years, then Enceladus would evaporated
    into the space already?
    I don't think the heat is concentrated in one area, it is just that the "Tiger Stripes" ( fissures ) happen to be found there. It's much like a boiling kettle - the heat is evenly distributed in the inside, but steam only escapes at one opening.
    Reply With Quote  
     

  5. #4  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,169
    The following Letter to Nature is relevant, though slightly dated:

    http://lasp.colorado.edu/~espoclass/...Enceladus2.pdf

    Enceladus, a small icy satellite of Saturn, has active plumes jetting from localized fractures (‘tiger stripes’) within an area of high heat flux near the south pole. The plume characteristics and local high heat flux have been ascribed either to the presence of liquid water within a few tens of metres of the surface, or the decomposition of clathrates. Neither model addresses how delivery of internal heat to the near-surface is sustained. Here we show that the most likely explanation for the heat and vapour production is shearheating by tidally drivenlateral (strike-slip) fault motion with displacement of 0.5m over a tidal period. Vapour produced by this heating may escape as plumes through cracks reopened by the tidal stresses. The ice shell thickness needed to produce the observed heat flux is at least 5km. The tidal displacements required imply a Love number of 0.01, suggesting that the ice shell is
    decoupled from the silicate interior by a subsurface ocean. We predict that the tiger-stripe regions with highest relative temperatures will be the lower-latitude branch of Damascus, Cairo around 60
    6deg W longitude and Alexandria around 15deg W longitude.
    Reply With Quote  
     

  6. #5  
    Forum Professor
    Join Date
    Apr 2009
    Posts
    1,120
    Could there be some unknown energy source at work?
    Something we could discover and make to work on the Earth?
    Antislavery
    Reply With Quote  
     

  7. #6  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,169
    There could be, but there is no reason to suspect that there is.
    Reply With Quote  
     

Similar Threads

  1. Replies: 17
    Last Post: October 16th, 2013, 07:51 AM
  2. Source of Earth's internal heat
    By Sealeaf in forum Earth Sciences
    Replies: 5
    Last Post: December 9th, 2011, 09:35 AM
  3. Enceladus rains water on Saturn
    By Dishmaster in forum Astronomy & Cosmology
    Replies: 3
    Last Post: August 5th, 2011, 09:54 AM
  4. Life under the surface of Enceladus?
    By Cyberia in forum Astronomy & Cosmology
    Replies: 2
    Last Post: June 25th, 2009, 01:30 AM
  5. Replies: 11
    Last Post: March 2nd, 2009, 11:20 PM
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
  •