Bingham, R G

Gudmundsson, G H

Pritchard, H D

Scott, J B T

Smith, A M

Vaughan, D G

The Cryosphere

English

The Open University

Accelerated Sea-Level Rise from West Antarctica,

Acceleration of Pine Island and Thwaites Glaciers,

Analysis of GPS data from an Antarctic ice stream, in:

Changes in ice dynamics and mass balance of the Antarctic ice sheet,

Changes in West Antarctic ice stream dynamics observed with

Fast recession of a West Antarctic Glacier,

Force-peturbation analysis of Pine Island Glacier, Antarctica, suggests cause for recent acceleration,

Fundamentals of Glacier Dynamics,

Harmonic analysis including error estimates in

Ice stream D ﬂow speed is strongly modulated by the tide beneath the Ross Ice Shelf,

Recent dramatic thinning of largest West Antarctic ice stream triggered by oceans,

The Physics of Glaciers,

Tidally controlled stick-slip discharge of a West Antarctic ice stream,

Tides and the ﬂow of Rutford Ice Stream,

Timing of recent accelerations

Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress

J. B. T. Scott

G. H. Gudmundsson

A. M. Smith

R. G. Bingham

H. D. Pritchard

D. G. Vaughan

Crossref

Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat. During the first major ground-based study between 2006 and 2008, GPS receivers were used to monitor ice flow from 55 km to 171 km inland, along the central flowline. At four sites both acceleration and thinning rates over the last two years exceeded rates observed at any other time over the last two decades. At the downstream site acceleration was 6.4% over 2007 and thinning was 3.5±0.5 ma−1. Acceleration and thinning have spread rapidly inland with the acceleration 171 km inland at 4.1% over 2007, greater than any measured annual flow increase along the whole glacier prior to 2006. Increases in surface slope, and hence gravitational driving stress, correlate well with the acceleration and no sustained change in longitudinal stress gradient is needed to explain the force balance. There is no indication that the glacier is approaching a new steady state

Scott, J. B. T.

Gudmundsson, G. H.

Smith, A. M.

Bingham, R. G.

Pritchard, H. D.

Vaughan, D. G.

Edinburgh Research Explorer

Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat. During the first major ground-based study between 2006 and 2008, GPS receivers were used to monitor ice flow from 55 km to 171 km inland, along the central flowline. At four sites both acceleration and thinning rates over the last two years exceeded rates observed at any other time over the last two decades. At the downstream site acceleration was 6.4 % over 2007 and thinning was 3.5 ± 0.5 ma-1. Acceleration and thinning have spread rapidly inland with the acceleration 171 km inland at 4.1 % over 2007, greater than any measured annual flow increase along the whole glacier prior to 2006. Increases in surface slope, and hence gravitational driving stress, correlate well with the acceleration and no sustained change in longitudinal stress gradient is needed to explain the force balance. There is no indication that the glacier is approaching a new steady state

Scott, J.B.T.

Gudmundsson, G.H.

Smith, A.M.

Bingham, R.G.

Pritchard, H.D.

Vaughan, D.G.

NERC Open Research Archive

Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat. During the first major ground-based study between 2006 and 2008, GPS receivers were used to monitor ice flow from 55 km to 171 km inland, along the central flowline. At four sites both acceleration and thinning rates over the last two years exceeded rates observed at any other time over the last two decades. At the downstream site acceleration was 6.4% over 2007 and thinning was 3.5 ± 0.5 ma-1. Acceleration and thinning have spread rapidly inland with the acceleration 171 km inland at 4.1% over 2007, greater than any measured annual flow increase along the whole glacier prior to 2006. Increases in surface slope, and hence gravitational driving stress, correlate well with the acceleration and no sustained change in longitudinal stress gradient is needed to explain the force balance. There is no indication that the glacier is approaching a new steady state

Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress

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