Not exact matches
The current flow speeds at the terminus are too fast to be caused solely by internal deformation of the
ice, implying that an
increase in basal sliding forced by additional meltwater production is the probable cause of the
velocity increases.
The higher
ice velocities in the base case CHW simulations are attributable to both decreased basal
ice viscosities associated with
increased basal
ice temperatures and an
increase in the extent of basal sliding permitted by temperate bed conditions.
The two papers don't mention any
velocity changes due to
increased slope, but they do record that at elevations above 1500 - 2000 m, the
ice has been growing in thickness by about 5 - 6 cm / yr, whereas below the 1500m level there's been a thinning of about -2 cm / yr.
During retreat phase, a tidewater glacier may retreat on the order of 1 - 2 km yr - 1 concurrent with dramatic
increases in
ice velocity...»
So, the positive feedback between melt and
velocities implies that more melt leads to higher
velocities, which bring in more
ice from cold regions to warm regions which
increases the melt and hence the
velocity etc, with as a final result a rapid loss of
ice and hence an enhanced
increased sea level.
Rather it claims that decreased ozone
increases the
velocity of the circumpolar vortex, thus breaking up pack
ice and allowing more
ice to form at the surface, thereby contributing to greater sea
ice extent.
With greater accumulation of dense
ice on the crystal, its fall
velocity increases.
At all points of the compass, the entire outer edge of the Greenland
Ice Sheet is flooding into the oceans with
increasing velocity.
Based on the
velocity map, it is the Zachariae that is likely the only of this group that would be comparable to a bank that is too big to fail as its
increased velocity band extends well into the
ice sheet.