Sentences with phrase «marine ice sheet instability»

See Marine Ice Sheet Instability for more information.

Thus two completely independent studies, using completely different methods, both find that the early stages of marine ice sheet instability may be underway in West Antarctica.

This work is not unprecedented, and follows decades of work and several recent papers discussing marine ice sheet instability in West Antarctica (e.g., references 4, 5, 6).

This is covered in more detail under Marine Ice Sheet Instability.

Although it was not a true ice age, the term was introduced Marine ice sheet instability hypothesis and the threat of a collapse of the West Antarctic Ice Sheet.

Marine ice sheet instability occurs when sub-shelf melt rate is large enough to force the ice sheet grounding line to retreat into an area where the ice is grounded below sea level on an inward - sloping bedrock, then it can become unstable.

It's a positive feedback cycle, a viscious loop that means that future recession of the ice stream is inevitable (see Marine Ice Sheet Instability and previous post).

The authors herald this as the start of marine ice sheet instability.

The first of these pathways, marine ice sheet instability, has been studied for decades, but the second, marine ice cliff instability, has only recently been considered as an important contributor to future sea level change.

Grounding line recession here could be irreversible, leading to rapid glacier thinning and recession, and sea level rise — see Marine Ice Sheet Instability.

Marine ice sheet instability is a classic example of hysteresis.

If they thin and melt away, this support is removed, leading to increase ice discharge, accelerated flow, grounding line recession8, 9, 10, and marine ice sheet instability.

She has shown, in an ice sheet model with gravitationally self - consistent sea level, there is actually a sea level fall at the grounding line, which acts to stabilize against the marine ice sheet instability.

The ice sheet in this area is grounded up to 2000 m below sea level, making it intrinsically unstable6 and susceptible to rapid melting at its base, and to rapid migration of the grounding line up the ice stream7 (see Marine Ice Sheet Instability).

A study using Earth Remote Sensing satellite radar interferometry (EERS - 1 and -2) observations from 1992 through 2011 finds «a continuous and rapid retreat of the grounding lines of Pine Island, Thwaites, Haynes, Smith, and Kohler» Glaciers, and the authors conclude that «this sector of West Antarctica is undergoing a marine ice sheet instability that will significantly contribute to sea level rise in decades to centuries to come» (Rignot et al. 2014).