Polar

advertisement
REGIONAL SLIDES
POLAR REGION
• Arctic Sea Ice
• Breidamerkurjökull, Iceland
• Hubbard Glacier, United
States
• Prudhoe Bay, United States
• Kolka Glacier, Russia
• Filchner Ice Shelf,
Antarctica
• Ninnis Glacier, Antarctica
• Drygalski Ice Tongue,
Antarctica
• Mt. Kilimanjaro, Tanzania
• Antarctic Ozone Hole
POLAR REGION
ARCTIC
• The core of the Arctic, in
the north, is the Arctic
Ocean.
• The Arctic Ocean has many
thousands of big and small
islands and the lands
surrounding the Arctic
Ocean supports a great
variety of plants.
ANTARCTIC
• The Antarctic, in the south,
is an isolated continent
surrounding the South
Pole. Most of Antarctica's
land lies beneath ice and
snow almost two km thick.
• It has high mountains and
glaciers.
Dramatic changes in Arctic Sea Ice
Imagine an
ice-free
Arctic
Shrinking Breidamerkurjökull Glacier
Iceland
• 1973-2000:
Images show glacier
has receded and the
glacial lake at its tip
has enlarged
Ice dam
in America:
the Hubbard
Glacier
North
Angangueo
United States
• 1985show
–Hubbard
• 1986: Images
Glacier
Degradation
of forest
area
• 1986 –Hubbard
Glacier blocks Russell
• 2001: Between
Fjord
1984
and 1999, 38 per cent
of forests
were –Hubbard
• 2002
degraded
Glacier blocks Russell
Fjord again
•2003 – Glacier has
retreated
Hubbard Glacier advances
North America: Angangueo
United States
• 1986: Images show
Degradation of forest
area
• 2001: Between 1984
and 1999, 38 per cent
of forests were
degraded
10 Aug 2002
14 Aug 2002
Sprawl of oil fields in Prudhoe Bay
United States
• 1974-1999: After the
discovery of oil fields in
1968, the Bay has
undergone dramatic
changes
Collapse of Kolka Glacier
Russia
Around Mt. Kazbek, a
dormant volcano
glaciers intermittently
collapse, burying the
landscape below
20 September 2002:
Kolka shattered,
setting off a massive
avalanche of ice,
snow and rocks
Extent of disaster in Kolka Glacier
Russia
This before and after
image shows the vast
extent of disaster
following the collapse
Breaking Off Filchner Ice Shelf
Antarctica
Filchner Ice
Shelf is the
largest ice
shelf on the
planet
In 1986 the front
edge of Ice Shelf
broke off into
three enormous
icebergs
Calving of Ninnis Glacier
Antarctica
22 January 2000:
The Ninnis Glacier
Tongue soon after
the initial calving
5 February 2002:
Iceberg split into
two sections and
started moving
away from Ninnis
Glacier
Cracks on Drygalski Ice Tongue
Antarctica
The ice tongue
was discovered
in 1902
21 February 2005:
Drygalski calved
an iceberg
Image shows
cracks formed by
time and ocean
currents
Disappearing Icecap of
Mt. Kilimanjaro, Tanzania
Africa’s highest mountain
with a forest belt having
rich diversity of
ecosystems
• 1976: Glaciers covered
most of the summit
• 2000: The glaciers had
receded alarmingly
Growth of the Antarctic Ozone Hole
1979
1988
1982
1984
1986
Darkest blue areas represent
regions of maximum ozone
depletion
1990
1999
1992
1997
1994
2004
“Good” Ozone vs. “Bad” Ozone
• Scientist observed positive
changes in the ozone layer
• “Bad” ozone is believed to be
the associated with smog and
poor air quality
• Earth's atmosphere appears to
be recovering from losses of
"good" ozone in the upper
reaches of the atmosphere
POLAR REGION
One Planet Many People:
Atlas of Our Changing Environment
Thank You!
Free Download:
www.na.unep.net
Purchase:
www.Earthprint.com
Download