home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

   sci.environment      Discussions about the environment and ec      198,385 messages   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 196,586 of 198,385   
   thebretcahill@gmail.com to All   
   Re: Can the Outer Banks Increase In Alti   
   14 Feb 18 09:55:10   
   
   68121ca2   
   > Supposedly the number and location of the inlets to the sound changes   
   > over time, some inlets closing and others opening up, while the total   
   > cross sectional area of all the inlets remains a constant.   
      
   > With sand dynamics like that it might be possible for the barrier   
   > islands to keep up with increases in sea level.   
      
      
   There is certainly some upper limit, maybe 2 - 5 cm/year, depending on other   
   factors including past history, how long and at what rate the sea level has   
   been rising.    
      
   Wave size is increasing in that part of the Pacific and wind or ocean currents   
   alone wouldn't do it so it's probably mostly wave action.  The only way to get   
   these limits is by looking at a lot of atolls and barrier islands, wave pool   
   testing & modeling.   
      
   As interesting as this science is, it is all moot if melting Antarctic land   
   ice starts creating a lot of tsunamis followed by large overnight sea level   
   increases.   
      
   If the islanders wait and try fleeing the tsunamis in boats for deep water,   
   that's not much of a plan.  Even if they find a place where the tsunami does   
   not crest, there will be nothing to return to except maybe a radio tower and   
   concrete ruins sticking    
   out of the water which will have risen 1 - 2 orders of magnitude more in one   
   day than the last 50 years combined.   
      
   There may not be many continental water ports that'll be in good enough shape   
   to accept them so they need to make some kind of arrangements to move to   
   Australia, California, HI, etc.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca