December 16, 2009
Rising Sea Level Documented
The sea level along the Atlantic Coast is rising faster now than at
any time in the past 4,000 years.
Environmental scientists at the Univ. of Pennsylvania say that, simply
put, land is being lost to subsidence as the earth continues to rise
in response to the removal of the huge weight of ice sheets during the
last glacial period.
Coastal subsidence enhances sea-level rise, which leads to shoreline
erosion and loss of wetlands and threatens coastal populations.
Further, the researchers find that the mid-Atlantic coastlines of New
Jersey, Delaware, and Maryland are subsiding twice as much as areas to
the north and south.
The study results were published in the journal Geology.
http://geology.gsapubs.org/
This is the first demonstrated evidence of this phenomenon from
observational data alone.
Researchers believe this may be related to the melting of the
Greenland Ice Sheet and ocean thermal expansion.
"There is universal agreement that sea level will rise as a result of
global warming but by how much, when and where it will have the most
effect is unclear," says Ben Horton, assistant professor of earth and
environmental science.
..................................................................................................................
The study provides the first accurate dataset for sea-level rise for
the U.S. Atlantic coast, identifying regional differences that arise
from variations in subsidence and demonstrate the possible effects of
ice-sheet melting and thermal expansion for sea level rise.
The study was supported by the National Science Foundation, the
Thouron Family, and the Univ. of Pennsylvania. Researchers from the
International Hurricane Research Center at Florida International
Univ., the Univ. of Toronto, and the Tulane/Xavier Center for
Bioenvironmental Research at Tulane Univ. contributed to the study.
________________________________________________________
Harry
A good article, thank you.
There is a problem however, at least from my standpoint. Teh article
above tells us that a research project indicates that the sea level on
the eastern seaboard of the USA is rising, and rising quickly, and the
article blames this rise on global warming. Id does not, give any
specifics, such as when, where, and how much the sea level has risen.
This is another article yo are asking us to accept without question.
...without facts, without figures, without data, without transparency.
Go figure.....
Sounds more like anecdote than science. Well, actually more like
propaganda than even anecdote.
Abstract is here..
http://geology.gsapubs.org/content/37/12/1115.abstract
>> This is the first demonstrated evidence of this phenomenon from
>> observational data alone.
>> Researchers believe this may be related to the melting of the
>> Greenland Ice Sheet and ocean thermal expansion.
>> "There is universal agreement that sea level will rise as a result of
>> global warming but by how much, when and where it will have the most
>> effect is unclear," says Ben Horton, assistant professor of earth and
>> environmental science.
>> ..................................................................................................................
>>
>> The study provides the first accurate dataset for sea-level rise for
>> the U.S. Atlantic coast, identifying regional differences that arise
>> from variations in subsidence and demonstrate the possible effects of
>> ice-sheet melting and thermal expansion for sea level rise.
>> The study was supported by the National Science Foundation, the
>> Thouron Family, and the Univ. of Pennsylvania. Researchers from the
>> International Hurricane Research Center at Florida International
>> Univ., the Univ. of Toronto, and the Tulane/Xavier Center for
>> Bioenvironmental Research at Tulane Univ. contributed to the study.
>> ________________________________________________________
>
> A good article, thank you.
>
> There is a problem however
No, you're imagining that your opinion has scientific validity..
> [The] article above tells us that a research project indicates
> that the sea level on the eastern seaboard of the USA is rising,
You're again incorrect, owing to your failed ideological blinders..
The abstract states..
"Accurate estimates of global sea-level rise in the pre-satellite
era provide a context for 21st century sea-level predictions, but
the use of tide-gauge records is complicated by the contributions
from changes in land level due to glacial isostatic adjustment (GIA).
We have constructed a rigorous quality-controlled database of late
Holocene sea-level indices from the U.S. Atlantic coast."
> the article blames this rise on global warming.
Nope..
From the abstract..
"We suggest this may be related to the melting of the Greenland
ice sheet and/or ocean steric effects."
> Id does not, give any specifics, such as when, where, and
> how much the sea level has risen.
So, in other words, you didn't follow the link, mentioned as..
"The study results were published in the journal Geology."
Click on "Current Issue"
http://geology.gsapubs.org/content/current
Now, look in the article listing, below the forums listing,
for "Spatial variability of late Holocene and 20th century
sea-level rise along the Atlantic coast of the United States"
> This is another article yo are asking us to accept without question.
Let's see..
Abstract:
"Accurate estimates of global sea-level rise in the
pre-satellite era provide a context for 21st century
sea-level predictions, but the use of tide-gauge
records is complicated by the contributions from
changes in land level due to glacial isostatic
adjustment (GIA). We have constructed a rigorous
quality-controlled database of late Holocene sea-level
indices from the U.S. Atlantic coast, exhibiting
subsidence rates of <0.8 mm a−1 in Maine, increasing
to rates of 1.7 mm a−1 in Delaware, and a return to
rates <0.9 mm a−1 in the Carolinas. This pattern
can be attributed to ongoing GIA due to the demise
of the Laurentide Ice Sheet. Our data allow us to
define the geometry of the associated collapsing
proglacial forebulge with a level of resolution
unmatched by any other currently available method.
The corresponding rates of relative sea-level rise
serve as background rates on which future sea-level
rise must be superimposed. We further employ the
geological data to remove the GIA component from
tide-gauge records to estimate a mean 20th century
sea-level rise rate for the U.S. Atlantic coast
of 1.8 ± 0.2 mm a−1, similar to the global average.
However, we find a distinct spatial trend in the rate
of 20th century sea-level rise, increasing from Maine
to South Carolina. This is the first evidence of this
phenomenon from observational data alone. We suggest
this may be related to the melting of the Greenland
ice sheet and/or ocean steric effects."
Received 5 May 2009.
Revision received 15 July 2009.
Accepted 17 July 2009.
That appears to be "questioned" enough, and above
reproach from your own prejudiced pseudo-science..
--Would you like any other answers of yours questioned?
•• ROTFLMAO
All of a sudden, 13,000+ years after the last
Glaciation, land is being lost to subsidence as
the earth continues to rise in response to the
removal of the huge weight of ice sheets
during the last glacial period.
If you cannot see three contradictions in that,
Take two aspirins and see your shrink in the
morning
•• If you did not see the contradictions,
see your eye doctor soonest
My apologies, I should have looked more closely.
This is an interesting abstract, and one which I will examine more closely.
Indeed.. The subsidence measured makes the overall
situation even more interesting, as these factors
become more readily observed. Also, the measurements
from bore-hole around the continents are showing a
similar rise in temperature, which may present us
with some unexpected volcanic events too, IMHO..
> This is an interesting abstract, and one which I will
> examine more closely.
Good to hear of it..
--Laters..
300 million years ago, a day was actually 4 hours long, because the
earth spun much faster. Gravity was also much less, which is why
dinosaurs and fossils show things growing so large. More
gravity=smaller animals.
Couldn't you find a url to post?
— —
| In real science the burden of proof is always
| on the proposer, never on the sceptics. So far
| neither IPCC nor anyone else has provided one
| iota of valid data for global warming nor have
| they provided data that climate change is being
| effected by commerce and industry, and not by
| natural phenomena
> The earth's rate of spin is actually slowing down by 6 seconds a
>century, 100 years ago the day was 6 seconds shorter.
Earth's rotational energy is slowly transferring through gravitational
effects to the moon, which is slowly increasing it's orbital distance.
>
> 300 million years ago, a day was actually 4 hours long, because the
>earth spun much faster. Gravity was also much less, which is why
>dinosaurs and fossils show things growing so large. More
>gravity=smaller animals.
Another high school science drop out, unless the mass of the earth
has significant;y increased, the effects of gravity has NOT changed
over the last 300 million years !!!
P.S. A collision with a mars sized object ~4.5 billion years ago
doubled earth's spin rate from ~8hr to ~4hr day. That same planetary
collision also formed earth's moon.
http://en.wikipedia.org/wiki/Tidal_acceleration
"This geological record is consistent with these conditions 620
million years ago: the day was 21.9�0.4 hours, and there were 13.1�0.1
synodic months/year and 400�7 solar days/year."