XPost: sci.electronics.design   
   From: bill.sloman@ieee.org   
      
   On 25/02/2026 1:15 am, J. J. Lodder wrote:   
   > Bill Sloman  wrote:   
   >   
   >> On 24/02/2026 10:40 pm, J. J. Lodder wrote:   
   >>> Bill Sloman  wrote:   
   >>>   
   >>>> On 24/02/2026 7:08 am, J. J. Lodder wrote:   
   >>>>> Bill Sloman  wrote:   
   >>>>>   
   >>>>>> On 23/02/2026 10:28 pm, J. J. Lodder wrote:   
   >>>>>>> Bill Sloman  wrote:   
   >>> [-]   
   >>>>>>>> Climate change denial is remarkably foolish.   
   >>>>>>>   
   >>>>>>> I saw a proposal to paint a blue line on all buildings in seaside towns   
   >>>>>>> at for example + 5 meter above present mean sea level.   
   >>>>>>   
   >>>>>> The Greenland ice sheet   
   >>>>>>   
   >>>>>> https://en.wikipedia.org/wiki/Greenland_ice_sheet   
   >>>>>>   
   >>>>>> would be good for 7.4 meters of sea if it all slid off into the sea at   
   >>>>>> once, and similar events happened at the end of the most recent ice age.   
   >>>>>>   
   >>>>>> The West Antarctic ice sheet   
   >>>>>>   
   >>>>>> https://en.wikipedia.org/wiki/West_Antarctic_Ice_Sheet   
   >>>>>>   
   >>>>>> will probably deliver 3.3 meters of sea level rise rather sooner.   
   >>>>>   
   >>>>> Indeed, it could but it is very unlikely that it will.   
   >>>>   
   >>>> That depends on how fast we cut our carbon emissions.   
   >>>>   
   >>>>>> Again it could happen quite quickly, and there would be no chance of   
   >>>>>> stopping it if the ice started moving fast and friction heating started   
   >>>>>> melting the bottom layers of the ice sheet.   
   >>>>>   
   >>>>> Inventing catastrophes is easy.   
   >>>>> Why not let the Yellowstone super-volcano explode first?   
   >>>>   
   >>>> The catastrophes aren't invented.   
   >>>   
   >>> -The- are not.   
   >>> Your particular one, of a sudden, massive sea level rise is.   
   >>> (by glaciologists in bad need of more funding).   
   >>   
   >> For sudden, read a couple of hundred years, and look at the end of the   
   >> last ice age, and the fact that the Gulf Stream got turned off for   
   >> about 1300 years at the end of the last ice - the Younger Dryas.   
   >   
   > Eh, an -experienced- catastrophe happens in less than ten generations.   
   > As for the end of the Younger Dryas event,   
   > that resulted in a rapid warming that may have been noticeable   
   > in a single generation, for some long-lived individuals.   
   > (like what we are seeing now)   
   > It didn't result in a sudden sea level rise.   
   >   
   >> https://en.wikipedia.org/wiki/Younger_Dryas   
   >>   
   >> That set in quite rapidly in some places - Greenland cooled off over a   
   >> period of three years.   
   >>   
   >> The changes in climate would have been quite dramatic enough and quite   
   >> fast enough to rate as catastrophic - business as usual would not have   
   >> been an option.   
   >   
   > Again, no sudden sea level rise.   
      
   For your preferred and self-serving definition of sudden.   
      
   What stopped the Gulf Stream seems to have been a lot of fresh water   
   draining into the North Atlantic, and that  would have shown up as sea   
   level rise. Losing an appreciable proportion of the Greenland ice sheet   
   would have much the same effect. It would take a while to melt in place,   
   but there's evidence on the ocean floor that stuff has slid off and   
   melted (dropping boulders) as it drifted south.   
      
   >>>> There was a massive sea level rise at   
   >>>> the end of the last ice age (and every one before it) and the current   
   >>>> distribution of continents that makes it possible for Antarctica and   
   >>>> Greenland to be covered with deep ice sheets isn't one that shows up all   
   >>>> that often in geological history.   
   >>>   
   >>> Those living at the time will hardly have noticed, if at all.   
   >>   
   >> Think again, or think a bit harder.   
   >   
   > I should let my imagination run wild because you do?   
      
   If you have an imagination at all, it might pay you to use it.   
      
   >>> The catastrophes that really happened, the Storegga slides for example,   
   >>> had little to do with sea level rise.   
   >>   
   >> The flooding of the Black Sea, which happened at much the same time, did   
   >> have more to do with sea level rise. It seems to have been spread over a   
   >> couple of hundred years, and people would definitely have noticed.   
   >   
   > Again, that Black Sea -catastrophe- never happened.   
   > It was a fund raising trick too,   
   > to get money out of credulous American creationists,   
   > of the 'the Flood really happened' kind.   
      
   There was certainly an element of that in some of the reports. Something   
   certainly did happen, and it would have made life difficult for those   
   living in the area while it was going on.   
      
   The people who wanted torrents of sea water pouring in from the   
   Mediterranean through the Bosphorus don't seem to found any evidence for   
   that, but the water level went up quite fast over a fairly short time.   
      
   https://en.wikipedia.org/wiki/Black_Sea_deluge_hypothesis   
      
   talks about 10 to 200 years. Not a sudden catastrophe, but fast enough   
   that if happened now it would keep a lot civil engineers very busy.   
      
   --   
   Bill Sloman, Sydney   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)