The phrase
"grounding line" refers to the point where a floating object, like an iceberg or a glacier, meets the land or the ocean floor.
Full definition
This will help guide your franchise lawyer when analyzing and assessing your most promising and best
grounded lines of attack.
If you lose patience with this search, you can run a new
ground line for the radio.
Don't know what the scholarship on this is — but the worst that will happen is a retreat to the
current grounding line.
Because it is grounded in ever deeper sea water, it is vulnerable to melting at its base and
rapid grounding line migration.
One video stretches up while the other extends downward, sharing a
common ground line, as if false reflections.
The scientists used satellite data that tracks minute changes in ice elevation from 2011 - 2016 to
spot grounding line changes.
A study published on Monday in Nature Geoscience is among the first to create a detailed snapshot of how warming ocean waters are eating away
at grounding lines around the continent.
This feedback could potentially result in the rapid loss of parts of the ice sheet,
as grounding lines retreat along troughs and basins that deepen towards the ice sheet's interior.
But strong melting near
deep grounding lines, where glaciers lose their grip on the seafloor and start floating as ice shelves, discharges large quantities of fresher, lighter water near the Antarctic coastline.
Rignot, E., Mouginot, J. & Scheuchl, B.
Antarctic grounding line mapping from differential satellite radar interferometry.
The team were able to track the movement of Antarctica's
grounding line using European Space Agency's CryoSat - 2 across 16,000 km of the coastline.
Grounding line recession here could be irreversible, leading to rapid glacier thinning and recession, and sea level rise — see Marine Ice Sheet Instability.
Greischar, L.L., and C.R. Bentley, Isostatic equilibrium
grounding line between the West Aantarctic Ice Sheet and the Ross Ice Shelf, Nature, Vol.
In a retrograde bed, retreating
grounding lines get deeper, so they retreat more easily, which makes them even deeper, and they retreat even more easily, and this goes on and on even if the ocean stops warming.
The experiment would be the first fully coupled global simulation to include dynamic ice shelf — ocean interactions for addressing the potential instability associated with
grounding line dynamics in marine ice sheets around Antarctica.
After 1 Ma, lower global sea levels encouraged
grounding line advance well into the Bellingshausen Sea continental shelf.
Warm waters have been eating away at ice from below in this region, and
once grounding lines retreat far enough inland, entire glaciers can become unstable and collapse.
I had forgotten the bit about a jump in
grounding line off a local peak on an otherwise level bed.
Nudging
Thwaites grounding line to the big jump to Transantarctic Mountains on a possible timescale of decades sounds uncomfortably possible.
Distinguishing subglacial till and glacial marine diamictons in the western Ross Sea, Antarctica: Implications for last glacial
maximum grounding line.
Pine Island, Thwaites and some of their neighbors have used up their
stable grounding lines and are retreating miles inland.
«I think it might actually be worth building a continuous platform for
monitoring grounding line retreat rates based on our approach,» Konrad said.
But scientists increasingly attribute much of the
observed grounding line retreat — particularly in West Antarctica — to the influence of warmer ocean water seeping beneath the ice shelves and lapping against the bases of glaciers, melting the ice from the bottom up.
Grounding lines typically lie a kilometre or more below sea level and are inaccessible even to submersibles, so remote sensing methods for detecting them are extremely valuable.
The area close to the Pine Island
Glacier grounding line thinned in the period 2003 — 2007 at up to 6 m yr - 1, neighbouring Smith Glacier thinned at a rate in excess of 9 m yr - 1 and Thwaites Glacier thinned at a rate of around 4 m yr - 1.
«Widespread,
Rapid Grounding Line Retreat of Pine Island, Thwaites, Smith and Kohler Glaciers, West Antarctica from 1992 to 2011.»
The company brought on the
new grinding line for increased capacity, flexibility, redundancy and peace of mind.
«If protective ice shelves were suddenly lost in the vast areas around the Antarctic margin where reverse - sloping bedrock (where the bed on which the ice sheet sits deepens toward the continental interior, rather than toward the ocean) is more than 1,000 meters deep,
exposed grounding line ice cliffs would quickly succumb to structural failure as is happening in the few places where such conditions exist today,» the researchers point out.
If a glacier loses mass from enhanced melting, it may start floating farther inland from its
former grounding line, just as a boat stuck on a sandbar may be able to float again if a heavy cargo is removed.
The mechanisms controlling these variations and advance and recession of
grounding lines include a number of potential forcings, such as oceanic temperatures, sea level changes, air temperatures, ocean tides, subglacial bathymetry, geomorphological features, subglacial meltwater, thermodynamics, and the size of the drainage basin [1].
Phrases with «grounding line»