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Sea Level Rise Pt. 2

Re: Sea Level Rise Pt. 2

Unread postby vtsnowedin » Mon 14 Jan 2019, 02:25:55

If the sea level is rising why is a WW1 wrecked submarine now sticking up out of the water?
Just asking.
https://www.cnn.com/2019/01/12/europe/g ... index.html
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Re: Sea Level Rise Pt. 2

Unread postby MD » Mon 14 Jan 2019, 03:39:15

pfff. the seas do their thing. shifting sands
Stop filling dumpsters, as much as you possibly can, and everything will get better.

Just think it through.
It's not hard to do.
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Re: Sea Level Rise Pt. 2

Unread postby jedrider » Mon 14 Jan 2019, 20:37:10

Post-Glacial Rebound?
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Re: Sea Level Rise Pt. 2

Unread postby Newfie » Tue 15 Jan 2019, 07:40:03

vtsnowedin wrote:If the sea level is rising why is a WW1 wrecked submarine now sticking up out of the water?
Just asking.
https://www.cnn.com/2019/01/12/europe/g ... index.html


Vincent Schmitt, a tour guide in the area, told AFP that "it is visible at low tide generally...because of the erosion we are experiencing."
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Re: Sea Level Rise Pt. 2

Unread postby vtsnowedin » Tue 15 Jan 2019, 14:21:07

jedrider wrote:Post-Glacial Rebound?
Would account for about 1.0 meter over the 100 years after the sub sank.
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Re: Sea Level Rise Pt. 2

Unread postby dohboi » Fri 22 Feb 2019, 10:09:49

Plans Approved to Build Massive Seawall in NYC for "Once in 300 Year" Storm

https://www.inverse.com/article/53485-b ... -every-ten

Despite Hurricane Sandy’s immense impact, the city has been slow to adopt protective measures that would safeguard residents from future storm-related disasters. A 2018 report that evaluated storm preparation ranked New York 12th out of 16 Eastern coastal states, behind both New Jersey and Connecticut. But on Tuesday, New York finally secured funding to begin addressing that though the Staten Island Levee Project, a $615 million seawall that will be built to withstand a “300 year storm.”

The new project is set to run 5.3 miles along Staten Island’s Eastern shore. It’s actually not technically a “wall,” and it will eventually be composed of a system of interconnected levees, berms, and seawalls, designed to combat both storm surges and rising sea levels.

But as climate change proceeds at an increasingly destructive pace, the more traditional ways of measuring storm severity — once every 100 years, every 300 years, every 500, etc. — and the ways in which those designations inform our seawall design could quickly become outdated. Hurricane Sandy, after all, was a once in a century storm. The Staten Island seawall is built for a once-in-300 year storm. But a report released last year by the Regional Plan Association found that those “every 500 years” floods New York has been slow to protect themselves against? They could start happening once every five.


https://www.6sqft.com/study-new-york-ci ... every-500/
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Re: Sea Level Rise Pt. 2

Unread postby KaiserJeep » Fri 22 Feb 2019, 12:25:32

Just as I predicted - before Trump leaves office, all his expensive NYC real estate will be protected from SLR at taxpayer's expense.

Now you know one of the main reasons he is POTUS, and will seek a second term. Of course, many of us would stand by and watch NYC sink into the ooze, and say "Good Riddance!". But that's just not gonna happen, now. Queue up and pay your taxes, to keep Trump Tower's basement dry.
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Re: Sea Level Rise Pt. 2

Unread postby Newfie » Fri 22 Feb 2019, 14:13:28

Uh, STATEN ISLAND, not Manhattan. Or does Trump have lots of property in Staten Island?

Here’s the plan for Manhattan. Much more ambitious, 10 miles long, no price tag attached.

That just Leaves Brooklyn and Queens.

$615 for Staten Island
$2,000 ish for Manhattan
Another few billion for Brooklyn and Queens

About $6 billion.

Not including cost over runs and maintenance.

Franklybto my ear that is an astonishingly low ball estimate considering the AMTRAK tunnel into NYC is about $30 billion alone. (When I worked on this project many years ago the admitted cost was almost $13 billion, but it was well known within the project that was an unrealistic political low ball figure.)

https://www.citylab.com/transportation/ ... al/556106/
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Re: Sea Level Rise Pt. 2

Unread postby KaiserJeep » Fri 22 Feb 2019, 14:51:48

Most of Trump's high dollar real estate is in downtown or uptown Manhatton. Uptown is a lot safer than the entire financial district, which is at risk in tunnels and basements that when flooded render the high rise buildings uninhabitable. The Dutch solved similar problems in Amsterdam using hard seawalls, compartmentalization, big pumps, and gates. New Amsterdam's problems could be solved that way as well, at a huge cost and after decades of effort and considerable demolition of existing structures which must be sacrificed to save the others. So far, the politics won't allow such a plan.

What is already happening is the city is hardening tunnels and basement spaces and adding watertight bulkhead doors. Problem is, that's not nearly enough to cope with storm surge in a major storm.
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Re: Sea Level Rise Pt. 2

Unread postby Newfie » Fri 22 Feb 2019, 17:22:24

But we are spending untold billions to improve access to this very area.

Stuuipid.
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Re: Sea Level Rise Pt. 2

Unread postby dohboi » Sat 23 Feb 2019, 07:50:04

"...before Trump leaves office, all his expensive NYC real estate will be protected from SLR at taxpayer's expense."

Interesting...I hadn't thought of that. Of course, he shortly have to give all that property up. And there are obviously a lot of other interested parties that want to see NYC preserved no matter what.

But yeah, storm surges are likely to get higher and higher going forward.

On the other hand, it's possible that slr will not be quite as fast as some recent estimates have predicted: https://www.skepticalscience.com/new-li ... n-slr.html

Studies shed new light on Antarctica’s future contribution to sea level rise

The papers together suggest a likely contribution of around 15cm from melting Antarctic ice by the end of this century, with a 5% likelihood that it will exceed 39cm under a high-emissions scenario.


I think it's still early days in understanding Marine Ice Cliff Instability (MICI), and further research will likely further alter these conclusions.
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Re: Sea Level Rise Pt. 2

Unread postby Tanada » Sat 23 Feb 2019, 09:51:38

Sure, all they have to do to disprove marine ice cliff instability if find one, just 1, marine terminating ice sheet anywhere on earth that exceeds 100 meters altitude by a substantial percentage.

When that manage to pull that rabbit out of their hat I will give them more credence.
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Re: Sea Level Rise Pt. 2

Unread postby jawagord » Fri 08 Mar 2019, 17:15:33

NOAA has created maps on sea level trends, most of the world currently has a rate of rise of 0-1 ft per hundred years.

https://tidesandcurrents.noaa.gov/sltre ... rends.html
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