Sea level rise threatens Alexandria

Sea level rise threatens Alexandria

There are 120 comments on the Independent Online story from Nov 14, 2010, titled Sea level rise threatens Alexandria. In it, Independent Online reports that:

Twenty years ago, Taher Ibrahim raced his friends across Alexandria's beaches, now rising seas have swept over his favourite childhood playground.

Join the discussion below, or Read more at Independent Online.

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“Happy, warm and comfortable”

Since: Oct 10

Mountain retreat, SE Spain

#1 Nov 14, 2010
Beaches come and go, what does that have to do with sea level?

Since: May 08

Deltona Fla

#2 Nov 14, 2010
Earthling-1 wrote:
Beaches come and go, what does that have to do with sea level?
Yeah man I know what you are talking about. I went the the beach and there was a big ole beach there. Then like six hours later it was gone. But then it came back again. And it kept doing that, coming and going. It goes on all the time. How can anybody think it has anything to do with sea level. Anybody says you are wrong you just tell them I saw it with my own eyes.

“Happy, warm and comfortable”

Since: Oct 10

Mountain retreat, SE Spain

#3 Nov 15, 2010
For an unbiased look at sea level rise and fall:
-
"During the previous interglacial about 120,000 years ago, sea level was for a short time about 6 m higher than today, as evidenced by wave-cut notches along cliffs in the Bahamas. There are also Pleistocene coral reefs left stranded about 3 meters above today's sea level along the southwestern coastline of West Caicos Island in the British West Indies . These once-submerged reefs and nearby paleo-beach deposits are silent testament that sea level spent enough time at that higher level to allow the reefs to grow (exactly where this extra sea level came from - Antarctica or Greenland - is open to question). Abundant similar evidence of geologically recent sea level positions can be found around the world."
http://www.wordiq.com/definition/Sea_level_ri...

“Happy, warm and comfortable”

Since: Oct 10

Mountain retreat, SE Spain

#4 Nov 15, 2010
Hopefully, someone will one day be able to explain why, although Venice is subsiding faster than sea level is rising, it's still above water level?
Black Cloud

Doncaster, UK

#5 Nov 15, 2010
Earthling-1 wrote:
Hopefully, someone will one day be able to explain why, although Venice is subsiding faster than sea level is rising, it's still above water level?
Don't know about Venice but southern Eangland is sinking due to isostatic rebound from the last ice age causing Scotland to rise.
I think the pivot point is somewhere near Yorkshire.
That said and increased flooding in London will be blamed on climate change.

Since: Apr 08

"the green troll"

#6 Nov 15, 2010
Black Cloud wrote:
<quoted text>
Don't know about Venice but southern Eangland is sinking due to isostatic rebound from the last ice age causing Scotland to rise.
I think the pivot point is somewhere near Yorkshire.
That said and increased flooding in London will be blamed on climate change.
The Thames Barrier and associated defences provide a very high level of protection against river and tidal flooding – one of the best in the world. But, sea levels are continuing to rise, and our changing climate makes heavy rainfall and stormy conditions in the future more likely. This means a greater risk of flooding from both higher water levels in the rivers, and surges of high sea water being pushed by storms into the estuary.

The Thames Barrier will continue to provide an excellent level of flood defence until the year 2030. At this point London and the Thames Estuary will still receive a good standard of protection, but with climate change and sea level rise this will decrease year on year – with defences getting older and more costly to maintain. By 2080 we expect the sea level in the Thames Estuary to rise by an average of 1 to 3 feet (26cm to 86cm), with extreme up to 7ft (2 metres) higher. If we do nothing, thousands of lives and properties face a very real threat. Although 2030 is still some time away, it takes a long time to research, design and build a major flood management system. By starting now, we will have plans in place and work completed before the risk of flooding becomes too high.

Thames Authority.

People with *real* responsibility don't listen to conspiracy nuts.
Black Cloud

Doncaster, UK

#7 Nov 15, 2010
Fair Game wrote:
<quoted text>
The Thames Barrier and associated defences provide a very high level of protection against river and tidal flooding – one of the best in the world. But, sea levels are continuing to rise, and our changing climate makes heavy rainfall and stormy conditions in the future more likely. This means a greater risk of flooding from both higher water levels in the rivers, and surges of high sea water being pushed by storms into the estuary.
The Thames Barrier will continue to provide an excellent level of flood defence until the year 2030. At this point London and the Thames Estuary will still receive a good standard of protection, but with climate change and sea level rise this will decrease year on year – with defences getting older and more costly to maintain. By 2080 we expect the sea level in the Thames Estuary to rise by an average of 1 to 3 feet (26cm to 86cm), with extreme up to 7ft (2 metres) higher. If we do nothing, thousands of lives and properties face a very real threat. Although 2030 is still some time away, it takes a long time to research, design and build a major flood management system. By starting now, we will have plans in place and work completed before the risk of flooding becomes too high.
Thames Authority.
People with *real* responsibility don't listen to conspiracy nuts.
The point I was making is that South East England is sinking and has been since the last ice age and this has nothing to do with climate change. Nor can anything be done about it.

Since: Apr 08

"the green troll"

#8 Nov 15, 2010
Black Cloud wrote:
<quoted text>
The point I was making is that South East England is sinking and has been since the last ice age and this has nothing to do with climate change. Nor can anything be done about it.
Sea level is also rising in the south of England due to global warming, as the Thames Authority recognises.

This is not because they are part of a grand conspiracy like you imply, but because they have to look at the scientific facts and you're the conspiracy nut.

Since: Apr 10

Milwaukee, WI USA

#9 Nov 15, 2010
Fair Game wrote:
...By 2080 we expect the sea level in the Thames Estuary to rise by an average of 1 to 3 feet (26cm to 86cm), with extreme up to 7ft (2 metres) higher ... Thames Authority.
People with *real* responsibility don't listen to conspiracy nuts.
People with real responsibility actually do the arithmetic and question the validity of the claims one, two, three ... seven feet of sea level rise.

I've spent some time recently downloading all the tide gage data from this site:

http://www.psmsl.org/data/obtaining/

There are over 1200 stations around the world representing nearly 160 coastlines with data going back in come cases as far as 1807. So I plotted it all out:

http://i53.tinypic.com/334rorq.jpg

That graph tells me that Sea level has always risen at a rate of about 1 mm per year and it continues to do so. There is no evidence of any acceleration in that graph or from any other analysis of the data. The projected rise of 1 meter is obviously not going to happen. Two meters would be ridiculous.

The thing of it is, Fair Game, your side of the coin exaggerates every aspect of "Global Warming" More and more people are coming to the conclusion that the shepherd boy hasn't seen any wolves, the emperor is naked, the sky is not falling, and that the grasshoppers unjustly want what is not theirs. The tortoise will win this debate; it's just a matter of time.

Since: Apr 10

Milwaukee, WI USA

#10 Nov 15, 2010
Here's that graph showing a two meter projection:

http://i55.tinypic.com/20fesl5.jpg

“Happy, warm and comfortable”

Since: Oct 10

Mountain retreat, SE Spain

#11 Nov 15, 2010
Fair Game wrote:
Sea level is also rising in the south of England due to global warming, as the Thames Authority recognises.
This is not because they are part of a grand conspiracy like you imply, but because they have to look at the scientific facts and you're the conspiracy nut.
You should stick to copy pasting, because once you forsake its security, holes appear in your thinking, Black Cloud didn't mention or imply any, "grand conspiracy."

“Happy, warm and comfortable”

Since: Oct 10

Mountain retreat, SE Spain

#12 Nov 15, 2010
Steve Case wrote:
Here's that graph showing a two meter projection:
http://i55.tinypic.com/20fesl5.jpg
That's hilarious!
Even a one metre rise belongs in Grimm's fairy tales.

“Happy, warm and comfortable”

Since: Oct 10

Mountain retreat, SE Spain

#13 Nov 15, 2010
Thames Authority wrote:
The Thames Barrier will continue to provide an excellent level of flood defence until the year 2030. At this point London and the Thames Estuary will still receive a good standard of protection, but with climate change and sea level rise this will decrease year on year
Anything in the Estuary, below the barrier is at risk and has been since it was built.
Meanwhile, building on flood prone areas below the barrier continues unabated.

Since: Apr 08

"the green troll"

#14 Nov 15, 2010
Steve Case wrote:
<quoted text>
People with real responsibility actually do the arithmetic and question the validity of the claims one, two, three ... seven feet of sea level rise.
I've spent some time recently downloading all the tide gage data from this site:
http://www.psmsl.org/data/obtaining/
There are over 1200 stations around the world representing nearly 160 coastlines with data going back in come cases as far as 1807. So I plotted it all out:
http://i53.tinypic.com/334rorq.jpg
That graph tells me that Sea level has always risen at a rate of about 1 mm per year and it continues to do so. There is no evidence of any acceleration in that graph or from any other analysis of the data. The projected rise of 1 meter is obviously not going to happen. Two meters would be ridiculous.
The thing of it is, Fair Game, your side of the coin exaggerates every aspect of "Global Warming" More and more people are coming to the conclusion that the shepherd boy hasn't seen any wolves, the emperor is naked, the sky is not falling, and that the grasshoppers unjustly want what is not theirs. The tortoise will win this debate; it's just a matter of time.
Another conspiracy nut searching through the data for evidence of conspiracy.

Sea level rise is in line with the *upper* limits of IPCC projections.

http://www.pik-potsdam.de/~stefan/update_scie...

Why do you guys always think that you know better than the scientists gathering and analysing the data, despite having no scientific experience yourselves?

Since: Apr 08

"the green troll"

#15 Nov 15, 2010
Earthling-1 wrote:
Black Cloud didn't mention or imply any, "grand conspiracy."
Implied.
Black Cloud wrote:
That said and increased flooding in London will be blamed on climate change.
The reason the Thames Authority is spending millions on flood defences is that they know sea level rise due to global warming is inevitable and they have to prepare- which is why they take no notice of people like you.

These are not old men like you, Nathan and Steve who'll be dead in a few years- they are people who'll have to live with the consequences of what they choose to believe now, so they chose to believe the evidence.
YouHelpFixIt

Scottsdale, AZ

#16 Nov 15, 2010
What! parts of Alexandia underwater.

Do you mean like the royal palace, the lighthouse of Pharos, and Portus Magnus.

Since: Apr 10

Milwaukee, WI USA

#17 Nov 15, 2010
Fair Game wrote:
<quoted text>
Another conspiracy nut searching through the data for evidence of conspiracy.
Sea level rise is in line with the *upper* limits of IPCC projections.
http://www.pik-potsdam.de/~stefan/update_scie...
Why do you guys always think that you know better than the scientists gathering and analysing the data, despite having no scientific experience yourselves?
Because on more than one occasion they have been shown to be in error. I don’t believe them. I have good reason to not believe them. I check out what they claim to the best of my ability and I have found that what they tell me isn’t the truth

I have downloaded the tide gage data from this site:

http://www.psmsl.org/data/obtaining/

and I overlaid that data on the Rahmstorf graphic as follows

http://i55.tinypic.com/2qmp1f4.jpg

You tell me why it doesn’t match up after 1990?

From 1970 to 1990 there’s a reasonable match then what happened? I can tell you that I DID NOT put in some sort of a negative fudge factor to bump it down.

Since: Apr 10

Milwaukee, WI USA

#18 Nov 15, 2010
Sea Level is NOT going up at 3.3 mm/yr.

Since: Apr 08

"the green troll"

#19 Nov 15, 2010
Steve Case wrote:
<quoted text>
Because on more than one occasion they have been shown to be in error. I don’t believe them. I have good reason to not believe them. I check out what they claim to the best of my ability and I have found that what they tell me isn’t the truth
I have downloaded the tide gage data from this site:
http://www.psmsl.org/data/obtaining/
and I overlaid that data on the Rahmstorf graphic as follows
http://i55.tinypic.com/2qmp1f4.jpg
You tell me why it doesn’t match up after 1990?
From 1970 to 1990 there’s a reasonable match then what happened? I can tell you that I DID NOT put in some sort of a negative fudge factor to bump it down.
Your graph is not the consistent with the published data:

http://www.skepticalscience.com/Visual-depict...

The link you gave is for "complete time series for all of the stations in the database". How did you turn that into a global average?

Since: Apr 08

"the green troll"

#20 Nov 15, 2010
Steve Case wrote:
Sea Level is NOT going up at 3.3 mm/yr.
Most recently, corrected tidal station data from the satellite altimeter period of 1993 to 2010 is in good agreement (within the error budget) with the satellite altimeter data, which gives 3.3mm/year ±0.4mm once GIA corrections are added. These values are considered “robust”. The overall message is clear. Sea levels are rising.

http://www.skepticalscience.com/Visual-depict...

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