Download
1 / 17
170 likes | 334 Vues
REGIONAL SLIDES. POLAR REGION. Arctic Sea Ice Breidamerkurj ökull, 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
E N D
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
North America: Angangueo Ice dam in the Hubbard Glacier United States • 1985 –Hubbard Glacier • 1986: Images show Degradation of forest area • 1986 –Hubbard Glacier blocks Russell Fjord • 2001: Between 1984 and 1999, 38 per cent of forests were degraded • 2002 –Hubbard Glacier blocks Russell Fjord again • 2003 – Glacier has retreated
Hubbard Glacier advances United States North America: Angangueo • 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 BayUnited 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 GlacierRussia 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 GlacierAntarctica 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 1990 1999 1988 1982 1992 1997 1986 1984 1994 Darkest blue areas represent regions of maximum ozone depletion 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
