Because they depend on sea ice to hunt seals, the polar bear is considered threatened as global warming melts and
thins ice in this region.
Not exact matches
If one part of an
ice shelf starts to
thin, it can trigger rapid
ice losses
in other
regions as much as 900 kilometres away — contributing to sea level rise
The
region's birth
in a giant impact must have excavated so much
ice from Pluto's surface that watery slush welled up from deeper within, plumping up to form a heavy, planetary - scale bruise beneath the
thinner crust.
Since a
thinner ice shell retains less heat, the tidal effects caused by Saturn on the large fractures
in the
ice at the south pole are no longer enough to explain the strong heat flow affecting this
region.
In previously
ice - rich areas such as the Beaufort Gyre off the Alaskan coast or the
region south of Spitsbergen, the sea
ice is considerably
thinner now than it normally is during the spring.
In fact, their satellite tracking revealed that those bears that continued to den on
ice tended to shift their dens eastwards, moving away from the western
regions where the
ice was
thinning faster.
Results published
in May show this
region crossed an invisible threshold
in 2009, with a dozen major glaciers simultaneously starting to
thin, sweating off 60 billion tons of
ice per year.
Dr Ian Joughin at the University of Washington, author of a recent study simulating future Antarctic
ice sheet losses added: «This study does a nice job of revealing the strong
thinning along the Amundsen Coast, which is consistent with theory and models indicating this
region is
in the early stages of collapse.»
«
In this region, the same [storms] that have driven increased snowfall inland have brought warmer ocean currents into contact with West Antarctic's ice shelves, resulting in rapid thinning,» said Thoma
In this
region, the same [storms] that have driven increased snowfall inland have brought warmer ocean currents into contact with West Antarctic's
ice shelves, resulting
in rapid thinning,» said Thoma
in rapid
thinning,» said Thomas.
On March 21, 2012, the MESSENGER team also revealed new supporting evidence that many permanently shadowed craters
in Mercury's polar
regions may harbor water
ice insulated with a
thin layer of soil or dust, or some other radar - reflecting volatile substance such as sulfur.
Ice is also
thinner in the Canadian Archipelago
region (an implication for the Northwest passage).
The
ice in this
region of approximately 100 kilometers
in diameter is always
thinner than the surrounding
regions, and small areas of open water are common year - round.
Sea
ice development
in the Svalbard
region was later than usual and many Svalbard fjords had little landfast
ice or
thinner than normal landfast
ice.
Hunters
in the
region have had to traverse
thin, unstable
ice as reflected
in ice thickness surveys along trails
in the Barrow
region.
West Antarctica is one of the fastest warming
regions on Earth and its
ice sheet has been stage to dramatic
thinning in recent years.
The total area covered by thick older
ice that survives one or more summers («multi-year
ice») shrank 42 percent or 1.54 million square kilometers (595,000 square miles), leaving
thinner first - year
ice («seasonal
ice») as the dominant type of
ice in the
region.
It is found that winter sea
ice is about 50 cm
thinner in high - NAO index years than
in low - NAO index years
in the Eurasian coastal
region mainly due to stronger wind - driven
ice export.
The
thinner wintertime
ice combined with strengthened southerlies
in spring promotes an earlier break - up of the
ice pack
in the Eurasian coastal
region, resulting
in significant sea
ice export.
Lance, adrift
in the
ice, provided a base for 100 scientists and engineers who spent 3 to 6 weeks on board the vessel studying air - snow -
ice - ocean interactions
in a
region with
thinner sea
ice.
Although the study did not find a significant change
in the elevation of the interior East Antarctic
Ice Sheet, it shows for the first time that the thinning of the Totten glacier in that region extends to the point where the ice meets the land surface below, known as the grounding li
Ice Sheet, it shows for the first time that the
thinning of the Totten glacier
in that
region extends to the point where the
ice meets the land surface below, known as the grounding li
ice meets the land surface below, known as the grounding line.
Statistically significant upward velocity and accelerations are recorded at 27 GPS stations, predominantly located
in the Central Highlands
region of Iceland, where present - day
thinning of the Iceland
ice caps results
in velocities of more than 30 mm / yr and uplift accelerations of 1 — 2 mm / yr2.
«This is not a case of thicker
ice appearing
in one
region simultaneously with
thinner ice appearing
in another, induced perhaps by a change
in surface winds or other transient conditions,» Dr. Rothrock said, noting that the decrease was widespread
in the central Arctic Ocean, and most pronounced
in the eastern Arctic.
This would only compound warming
in the
region, which is already moving at a fast clip due to the
thinning of
ice sheets and record melting of sea - surface
ice.