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| Thread: The loss of U.K. coastline |  This thread is pages long: 1 2 · NEXT» |
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markkur
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posted September 29, 2013 07:33 PM |
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The loss of U.K. coastline
In 2006 I lived on the Florida coast at about 10' above sea-level. During this time I learned, that in the Canary Islands there is large underwater-shelf of land that poses a very serious threat to both the western European and eastern U.S. coastlines. I didn't move because of rising water, I moved because of rising taxes, but since I lived 10 feet above sea-level and it might happen that a 50-100 foot wall of water might hit? well, I'm aok to be back in the midwest and just living with tornado threats again.
Ofc, I was also aware of the ever-existing Hurricane-threat (think Katrina) and I've also known for a long time that some U.S. states are shrinking everyday. i.e. Louisiana is, by recent estimates, iirc, losing a chunk of land about the size of an American football field every hour.
I'm making this post because I am curious to know if your country is facing rising sea levels that are supposedly intensified by global warming? Btw, a friend of mine once took an Alaskan cruise and had some "pics on the ice" taken. A decade+ later, that spot and all of the surrounding area is now ocean.
Anyway, because of my interest in U.K history, the other day I was doing a bit of research on Alfred the great and the marshy lands he traversed before defeating Guthrum. I was trying to find a lost town on a "survey-map" from around 1900 and bumped into this BBC story on "Lost villages"
bbc
Quote:
Ravenser Odd, also spelled Ravensrodd...Ravenser comes from the Viking 'Hrafn's Eyr' or "Raven's tongue" referring to the lost sandbank promontory, the modern successor of which is now known as Spurn Point. ...In the 13th century the town was a more important port than Kingston upon Hull, further up the Humber, ...but as the sandbanks shifted the town was swept away.
Then, I saw this; "'Shrinking Britain' will force land to be abandoned to the sea"
link
Then I wondered how bad is this in the U.K.? and found quite a lot going on; here's one link from a Gov. agency.
BGS
bgs
In the past I've also read of some other impacts, like Venice now being at what was once the town's second-story level, a sad account that the Maldives are vanishing, etc. but I never looked at this in any serious way; it was more like one story at a time and I wondered if whatever was reported was true and then I forgot about it.
But after seeing this stuff; are there any of these dramatic losses happening on your country's coastlines? Any discussions about this topic in the Media?
Btw, a very good TimeWatch-Doc is on youtube that covers that 1607 "event". Throughout history it has been thought the event was a very bad storm-surge but the recent investigation now concludes it was a tsunami.
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JoonasTo
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posted September 29, 2013 11:25 PM |
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We're actually still gaining coast due to the rising of the earth to its proper height after the ice age. 
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veco
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posted September 29, 2013 11:44 PM |
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How is that right? Aren't sea levels lowest during ice ages and then rise once it's over?
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xerox
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posted September 29, 2013 11:50 PM |
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the ice masses pushes the land down
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JoonasTo
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posted September 29, 2013 11:51 PM |
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We had this kilometers deep mass of ice on us. It caused a real downer, yo. We just recovering from the effects.
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blizzardboy
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posted September 30, 2013 02:58 AM |
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Southern Louisiana is pretty much ****ed. It was dangerous even in the 18th century. I don't know what French snow decided to build a city underwater, but... he was a real snow.
Oh well. New Orleans is still the coolest city ever. When it becomes permanently semi-submerged and everybody is rowing around a lamp-lit city in boats, I'm totally moving there just for the coolness factor. I don't even care if it's the rape capital. I'll wear steel underwear with a padlock.
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Corribus
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posted September 30, 2013 03:37 AM |
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New Orleans is a filthy, stinking cesspool. But the food is good.
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markkur
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posted September 30, 2013 03:34 PM |
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JoonasTo said:
We're actually still gaining coast due to the rising of the earth to its proper height after the ice age.
Interesting. So you guys have "The Wash" effect/result happening where beachfront will be further from the water over time, albeit for a different reason. What's the rate?
Then, it stands to reason, if not for the rising waters, you'd have even more land emerging. Anyone talked about that?
@BB
Quote:
... I don't know what French snow decided to build a city underwater, but... he was a real snow.
It was under sea-level from the start? As far as folks flirting with disaster, that's all over the world. Since Hurricanes, Typhoons and Tsunamis are the real deal, seems madness, for what? 80% of the worlds population to be living on coasts?
Then there's California.
Real Estate Agent to client; "Look at this view"
Client; "Isn't this site on a fault-line, and what's that pile of rubbish over there that's under that bank of mud and what happened in that burned area that I see a ways up the coast?
RE Agent; "Just imagine sitting here and viewing the sun sinking in the ocean every dusk, you'll be envied by all your friends"
Client; "I'll take it!"
There's madness in my area too; like building a mansion "on a river". Oh but it's such a beautiful scene. Yeah, like rivers do not rise.
@ Cor
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...But the food is good.
Yeah unless the diner is a filthy stinking cesspool.
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JoonasTo
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posted September 30, 2013 03:58 PM |
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Around half-a-centimeter a year.
Here's a comparison right after the last ice age with the modern borders.
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markkur
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posted September 30, 2013 04:48 PM |
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Wow. That's a big change. So that also "sort of" explains why the Vikings had to go a plundering; there had not been enough time for more of the land to become agriculturally viable.
Thanks for the pic. One last question; so that lone spot in the North is a deep-valley today, correct? Does it have a name?
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xerox
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posted September 30, 2013 06:27 PM |
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Edited by xerox at 18:29, 30 Sep 2013.
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my home would have been submerged had it not been for the post-glacial rebound effect x)
also a lot more people would have died in all the Sweden vs. Denmark wars
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veco
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posted September 30, 2013 06:39 PM |
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That's interesting, I've never heared of this effect. Does this mean there are still a few salty lakes in Finland?
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blizzardboy
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posted September 30, 2013 06:44 PM |
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What happens if the peninsula continues to decompress and then one day it flips over and you guys are upside down and hovering over Russia?
Speaking of funny geological phenomenon, did you know that in central America they are preparing for projects to help "staple" the connection between S. America and N. America? Because the landmasses are gradually separating from each other, and the land connection is already very thin, the effects of the separation could cause severe tremors from the retractions in the Earth in central America up into Mexico.
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OhforfSake
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posted September 30, 2013 08:01 PM |
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I can't see how they can "staple" it together. It sounds like an ant trying to keep a truck in place.
What would be awesome though, is if we somehow gradually could loosen the stress which builds up and thereby get an amazing free energy source and remove the danger of earthquakes at the same time.
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blizzardboy
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posted September 30, 2013 08:42 PM |
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It's not meant to force the continent from drifting. If they somehow did that (which would be astronomically expensive) it would just massively strengthen the tremors when it did separate. It's something to do with the materials. They're using elongated beams from giant wooden tropical trees as staples across key stretches of land under high stress, and the malleability of the wooden trunks can gradually help absorb the pressure of the separation, or some **** like that. I don't think you see it anywhere else in the world because with a normal fault line, it's a separation between two continental tectonic plates, and the force involved is so high that there's basically no point to trying to reduce it. The potential tremors from the land gradually stretching apart in central America is highly localized.
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markkur
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posted September 30, 2013 11:05 PM |
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blizzardboy said:
... They're using elongated beams from giant wooden tropical trees as staples across key stretches of land under high stress, and the malleability of the wooden trunks can gradually help absorb the pressure of the separation, or some **** like that.
I guess I'm not getting it, what exactly is this supposed to prevent? I know when the trunks are driven vertically into bedrock under swampy land, they will stabilize a future building, excavations at Venice show the original timbers but that's a small job by comparison.
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JoonasTo
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posted October 02, 2013 07:46 PM |
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markkur said:
Wow. That's a big change. So that also "sort of" explains why the Vikings had to go a plundering; there had not been enough time for more of the land to become agriculturally viable.
Thanks for the pic. One last question; so that lone spot in the North is a deep-valley today, correct? Does it have a name?
No, it's a lake. When a body of water becomes separated from the sea, its water level stops dropping and it forms a lake.
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markkur
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posted October 02, 2013 08:32 PM |
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That makes sense. I thought on the pic, it was where water once was but is not present today.
So is all of Scandinavia is rising and no country is losing coastline?
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JoonasTo
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posted October 03, 2013 06:44 AM |
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Fennoscandia, Estonia, Canada and Scotland(England is sinking though).
Wikipedia seems to have a theoretical map, not sure how accurate it is but seems right for the parts I know. It is very large so I'll just link it.
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markkur
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posted October 03, 2013 05:18 PM |
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Thank you for the link. Turns out a couple of the worst sites in the U.S. are north/northwest of me.
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