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Chapter
Seven
THE VASTNESS OF WORLD
IS DIMINISHING
GROUNDING LINE KEEPS RETREATING
My wife Gulbanoo has developed
a habit of reading our local morning newspaper The Vancouver Sun,
with a red pen marker in her hand. Any news item that I should not overlook
is marked out with her marker. The page with the news is then included
with my next day's lunch. If there is a comment to be made, she would scribble
it with her favorite marker.
On Saturday, October 9, 1999 with
my daily lunch I got page 'A13' of previous day's The Vancouver Sun.
The news page was entitled --WORLD--. There was an interesting column
from Reuters about a recent scientific study conducted under the
Geophysics Program of University of Washington, Seattle. The
heading read: "Antarctica 'likely'
to keep melting". The sub-heading read: "Global
warming was probably not to blame for the situation at the West Antarctic
Ice Sheet, experts say." On top of that news column was scribbled
by my wife; "In the Quran".
I read the reported
abstract of the conducted study with interest. It was not an in-depth reporting,
but it did harmonized and supported a specific verse from the Qur'an. To
obtain the first hand report and further details I contacted the leader
of the study group, professor
Howard Conway - a Geophysicist at the University
of Washington. Following his directions, received by e-mail, I logged on
to the web site:
http://www.geophys.washington.edu/News/glaciers/index.html.
The detailed article with photographs, charts,
diagrams, etc., had appeared in Science Magazine, Volume 286, Number
5438 Issue of 8 October 1999, pp. 280 -283. One may read the complete report
by visiting: http://www.sciencemag.org:80/cgi/reprint/286/5438/280.pdf
Huge Antarctic Ice Sheet in Death
Throes
UW Press Release: Oct. 7, 1999 An
immense expanse of Antarctic ice that has been receding steadily for 10,000
years poses the most immediate threat of a large sea level rise because
of its potential instability, a new study indicates. The West Antarctic
Ice Sheet - about 360,000 square miles, or roughly the size of Texas and
Colorado combined - rests on the Antarctic land mass below sea level, which
makes it particularly susceptible to rising sea level. Its complete collapse
would raise global sea level 15 to 20 feet, enough to flood many low-lying
coastal regions. The new study shows that the ice sheet's complete disintegration
in the next 7,000 years could be inevitable, said Howard Conway, a University
of Washington research associate professor of geophysics, who is the lead
author for a paper describing the research in the Oct. 8 issue of Science.
While human-caused climate change could hasten
the ice sheet's demise, it might be that there
is nothing humans can do to slow or reverse the trend,Conway
said. "Collapse appears to be part of an ongoing natural cycle, probably
caused by rising sea level initiated by the melting of the Northern Hemisphere
ice sheets at the end of the last ice age," he said. "But the process could
easily speed up if we continue to contribute to warming the atmosphere
and oceans." UW geophysics professor Edwin Waddington; Anthony Gades, a
UW geophysics research associate; University of Maine geological sciences
professor George Denton; and Brenda Hall, a UM post-doctoral researcher
in geological sciences, also took part in the study. Using evidence gathered
from raised beaches and radar imaging of subsurface ice structures to reconstruct
historic changes, the scientists found the ice sheet has both thinned and
decreased in area since the last glacial maximum 20,000 years ago.
Ice covering the region once was as
much as a half-mile thick in places. Land previously weighed down by the
dense ice has elevated since being freed from its burden. The timing of
deglaciation was determined by carbon-14 dating of samples found on raised
beaches that are now up to 90 feet above present sea level. Other evidence
comes from Roosevelt Island, an ice island in the Ross Sea. Floating ice
now surrounds it, but reconstructions suggest that ice in the area of Roosevelt
Island was about 1,600 feet thicker and was grounded during the last ice
age. The researchers found that the
grounding line (the boundary between floating ice and grounded ice) has
receded about 800 miles since the ice age and has withdrawn an average
of about 400 feet per year for the last 7,600 years.
That average is similar to the current rate, and there is no indication
the retreat is slowing, Conway said. If the grounding line continues to
withdraw at that rate, complete disintegration of the ice sheet will take
about 7,000 years. Other scientists have found evidence suggesting the
West Antarctic Ice Sheet might have disintegrated in the past. Fragments
of tiny algae called diatoms have been recovered from cores drilled through
the ice and into the land beneath. It is believed diatoms require open
water to build their colonies, which suggests the region once was free
of ice, perhaps as recently as 130,000 years ago between the last two ice
ages, Conway said.
Nearly one month after the publication of the
above scientific study report, there appeared a news item in The Vancouver
Sun on November 6, 1999. It was reported that a group of islands in
New Guinea is also sinking into the Pacific Ocean at the rate of 10-15
cm a year. The Duke of York Islands are sinking not because of rising sea
levels, but due to seismic activity.
Here is the verse from the Qur'an:
See they
not that we come into their land and cut short its borders?
Translation by Reverend J. M. Rodwell
Have they not
seen how We come to the land diminishing it in its extremities? Translation
by Arthur J. Arberry
See they not that
We gradually reduce the land from its outlying borders?
Translation by Abdullah Yusuf Ali
Transliteration:
'a- wa- lam yaraw 'an(na) -naa na'te al- 'ard. nanqus. -haa min at.raaf
-haa
(Qur'an 13: 41)
It is the beauty of Allah's handiwork
that He conveys to us His Message in a brief testimony of just one line.
Those who are well grounded in the knowledge can understand and appreciate
this Glory.
Please click Chapter-8 to
continue...
INDEX
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