Trigger for past rapid sea level rise discovered, page 1


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Topic started on 16-7-2012 @ 02:24 PM by SLAYER69
Trigger for past rapid sea level rise discovered
Dr Gregoire, lead author of the study, said: “We didn’t expect our model to produce such a rapid sea level rise. We got really excited when we realised that the events we simulated corresponded to real events!”

The cause of rapid sea level rise in the past has been found by scientists at the University of Bristol using climate and ice sheet models. The process, named ‘saddle-collapse’, was found to be the cause of two rapid sea level rise events: the Meltwater pulse 1a (MWP1a) around 14,600 years ago and the ‘8,200 year’ event. The research is published today in Nature.....

Towards the end of the last ice age, at the time of mammoths and primitive humans, the climate naturally warmed. This started to melt ice at increasingly high elevations, eventually reaching and melting the saddle area between the ice domes. This triggered a vicious circle in which the melting saddle would lower, reach warmer altitudes and melt even more rapidly until the saddle had completely melted. In just 500 years, the saddles disappeared and only the ice domes remained.



I thought I'd stop in and post this story. It's an interesting read .

I wonder how many possible prehistoric coastal cultures/early civilization may have had to uproot and head inland or up fresh water river valleys during this period to avoid the sometimes quickly sometimes slowly rising ocean? The debate IMO as to whether there are ancient now submerged prehistoric cultures and possible early civilizations sites still rages.

We have some evidence of man made structures and habitats being discovered beneath many of the worlds coastlines and near shore locations.

As always, Stay tuned.

edit on 16-7-2012 by SLAYER69 because: (no reason given)



reply posted on 16-7-2012 @ 02:41 PM by MamaJ
reply to post by SLAYER69



And so I wondered after reading the text you offeredand linked to, is sea level on the rise now? If so..... What should we do, if anything?

Here is what I found. oceanservice.noaa.gov...

Yes, there is strong evidence that global sea level gradually rose in the 20th century and is currently rising at an increased rate, after a period of little change between AD 0 and AD 1900. Sea level is projected to rise at an even greater rate in this century. The two major causes of global sea level rise are thermal expan- sion of the oceans (water expands as it warms) and the loss of land-based ice due to increased melting.


The article goes on to say its not uniformly distributed. Some places are not as high but the mean average is.

It seems they expect it to rise even more.


Global sea level is projected to rise during the 21st century at a greater rate than during 1961 to 2003.


So.... Should some move to higher ground or what? Lol

Also, I would expect to find some places decreasing and when it does to a point... There will indeed be lost treasures to find.


reply posted on 16-7-2012 @ 02:58 PM by Ericthenewbie
S&F, great thread!

Here's some further examples of underwater discoveries of lost civilizations;

Alexandria, Egypt: Off the shores of Alexandria, the city of Alexander the Great, lie what are believed to be the ruins of the royal quarters of Cleopatra. It is believed that earthquakes over 1,500 years ago were responsible for casting this into the sea, along with artifacts, statues and other parts of Cleopatra’s palace.

Bay of Cambay, India: A few years back discovered the remains of a vast 9,500 year old city. This submerged ruin has intact architecture and human remains. More significantly, this find predates all finds in the area by over 5,000 years, forcing historians to reevaluate their understanding of the history of civilazation in the region. The find has been termed Dwarka, or the ‘Golden City,’ after an ancient city-in-the sea said to belong to the Hindu god Krishna.

Yonaguni-Jima, Japan: Discovered by a dive tour guide some twenty years ago, controversies have arisen around a mysterious pyramids found off the coast of Japan. These structures seem to have been carved right out of bedrock in a teraforming process using tools previously thought unavailable to ancient cultures of the region.

Havana, Cuba: A team of scientists continues to explore megalithic ruins found in the Yucatan Channel near Cuba. They have found evidence of an extensive urban environment stretching for miles along the ocean shore. Some believe that the civilization that inhabited these predates all known ancient American cultures. So far, only computer models of this mysterious underwater city exist.

North Sea, Europe: A lost natural landscape was found recently under the North Sea, once occupied by human hunter-gatherers over 10,000 years ago. What were once rivers, lakes and oceans are now all at the bottom of the sea, only made known through digital mapping. Scientists theorize that this amazingly well-preserved landscape was at the heart of an ancient civilization spread across Europe.


reply posted on 16-7-2012 @ 03:20 PM by jude11
Originally posted by Ericthenewbie
S&F, great thread!

Here's some further examples of underwater discoveries of lost civilizations;

Alexandria, Egypt: Off the shores of Alexandria, the city of Alexander the Great, lie what are believed to be the ruins of the royal quarters of Cleopatra. It is believed that earthquakes over 1,500 years ago were responsible for casting this into the sea, along with artifacts, statues and other parts of Cleopatra’s palace.

Bay of Cambay, India: A few years back discovered the remains of a vast 9,500 year old city. This submerged ruin has intact architecture and human remains. More significantly, this find predates all finds in the area by over 5,000 years, forcing historians to reevaluate their understanding of the history of civilazation in the region. The find has been termed Dwarka, or the ‘Golden City,’ after an ancient city-in-the sea said to belong to the Hindu god Krishna.

Yonaguni-Jima, Japan: Discovered by a dive tour guide some twenty years ago, controversies have arisen around a mysterious pyramids found off the coast of Japan. These structures seem to have been carved right out of bedrock in a teraforming process using tools previously thought unavailable to ancient cultures of the region.

Havana, Cuba: A team of scientists continues to explore megalithic ruins found in the Yucatan Channel near Cuba. They have found evidence of an extensive urban environment stretching for miles along the ocean shore. Some believe that the civilization that inhabited these predates all known ancient American cultures. So far, only computer models of this mysterious underwater city exist.

North Sea, Europe: A lost natural landscape was found recently under the North Sea, once occupied by human hunter-gatherers over 10,000 years ago. What were once rivers, lakes and oceans are now all at the bottom of the sea, only made known through digital mapping. Scientists theorize that this amazingly well-preserved landscape was at the heart of an ancient civilization spread across Europe.


And soon:

New York City: After landing their craft on a small island, explorers from a distant galaxy have discovered what may have been an ancient walled city lost to rising waters over 20,000 years ago. It appears that these walls were erected to keep the inhabitants in rather than enemies out thus causing some to speculate as to the downfall of this once great warrior culture. The only remnants of personal belongings remaining appear to be made of an oil based substance which may be a clue to what many theorize as Plastic, a material long ago abandoned and thought to be a contributing factor to what may have caused the waters to rise.



Just couldn't resist.

Peace


reply posted on 16-7-2012 @ 03:23 PM by Ericthenewbie



reply posted on 16-7-2012 @ 03:56 PM by jrmcleod
reply to post by SLAYER69



I like the thread, i just domt like the way the word it. "primative man". 14,000yrs ago man had built the Sphynix and many other wonders. Not quite sure just how "primative" we truely were!


reply posted on 16-7-2012 @ 04:20 PM by SLAYER69
reply to post by jrmcleod



Agreed on the "Primitive" man quote. I too can't stand when they toss that in there as if it's a fact. When one considers some of the overwhelming evidence such as beautifully painted cave art from periods preceding these events by as much as 10 to 15 thousands years in some cases then it's obvious they were not primitives


reply posted on 16-7-2012 @ 05:39 PM by Mad Simian
reply to post by SLAYER69



I wish I could afford the membership/purchasing fee to read that full report. Guess I'll have to wait until the info trickles down to us 'commoners'. lol Especially if said report also takes into account isostatic rebound of plates during these times too.

As always Slayer, thanks for keeping your ear to the ground when I can't. S&F for you.


reply posted on 16-7-2012 @ 07:04 PM by SLAYER69
reply to post by Mad Simian



I noticed that too. That's a shame but we do have the provided link discussing the findings though


reply posted on 16-7-2012 @ 09:04 PM by benrl
reply to post by phroziac



Its the potable water we are lacking, we would need to start harnessing the melt water now which we are not doing. The problem is making the water usable, even ocean water can be safe if processed, that requires infrastructure, and no one seems to want to build that.
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