Surface flow evolution throughout a glacier surge measured by satellite radar interferometry

[1] The surface flow evolution over 6 years of a glacier surge in Svalbard is revealed by satellite radar interferometry from ERS-1 and ERS-2. Eleven surface velocity maps, generated by combining multi-temporal, differential interferograms utilising 36 ascending and descending-pass images, give an unprecedented overview of the spatio-temporal development of the surge. The surge is characterised by gradual initiation and termination phases, and flow restrictions appear to remain spatially consistent despite the relatively large changes in surface velocity. Results from this type of study are expected to help constrain physically-based models of surge behaviour.

[1]  Craig S. Lingle,et al.  Analysis of the 1993-95 Bering Glacier (Alaska) surge using differential SAR interferometry , 1998 .

[2]  Søren Nørvang Madsen,et al.  Combining SAR interferometry and the equation of continuity to estimate the three-dimensional glacier surface-velocity vector , 1999 .

[3]  J. Hagen,et al.  The duration of the active phase on surge-type glaciers: contrasts between Svalbard and other regions , 1991, Journal of Glaciology.

[4]  Urs Wegmüller,et al.  Glacier motion estimation using SAR offset-tracking procedures , 2002, IEEE Trans. Geosci. Remote. Sens..

[5]  D. R. Fatland,et al.  Surge-front propagation and velocities during the early-1993–95 surge of Bering Glacier, Alaska, U.S.A., from sequential SAR imagery , 2003, Annals of Glaciology.

[6]  R. Michel,et al.  Flow of Glaciar Moreno, Argentina, from repeat-pass Shuttle Imaging Radar images: comparison of the phase correlation method with radar interferometry , 1999, Journal of Glaciology.

[7]  D. R. Fatland,et al.  Comparison of SAR-interferometric and surveyed velocities on a mountain glacier: Black Rapids Glacier, Alaska, U.S.A. , 2000, Journal of Glaciology.

[8]  John Woodward,et al.  Glacier surge propagation by thermal evolution at the bed , 2000 .

[9]  Barclay Kamb,et al.  Glacier Surge Mechanism: 1982-1983 Surge of Variegated Glacier, Alaska , 1985, Science.

[10]  Ron Kwok,et al.  Measurement of ice-sheet topography using satellite-radar interferometry , 1996 .

[11]  Eric Rignot,et al.  North and northeast Greenland ice discharge from satellite radar interferometry , 1997 .

[12]  R. Goldstein,et al.  Satellite Radar Interferometry for Monitoring Ice Sheet Motion: Application to an Antarctic Ice Stream , 1993, Science.

[13]  Ron Kwok,et al.  Estimation of ice-sheet motion using satellite radar interferometry: method and error analysis with application to Humboldt Glacier, Greenland , 1996, Journal of Glaciology.

[14]  P. Rosen,et al.  Atmospheric effects in interferometric synthetic aperture radar surface deformation and topographic maps , 1997 .

[15]  Helmut Rott,et al.  Mass fluxes and dynamics of Moreno Glacier, Southern Patagonia Icefield , 1998 .

[16]  Ian R. Joughin,et al.  Interferometric estimation of three-dimensional ice-flow using ascending and descending passes , 1998, IEEE Trans. Geosci. Remote. Sens..

[17]  U. Wegmuller,et al.  Land Subsidence Monitoring with Differential SAR Interferometry , 2001 .

[18]  Garry K. C. Clarke,et al.  Fast glacier flow: Ice streams, surging, and tidewater glaciers , 1987 .

[19]  R. Armstrong,et al.  The Physics of Glaciers , 1981 .

[20]  Paul A. Rosen,et al.  Two-Dimensional Phase Unwrapping fo SAR Interferograms by Charge Connection Through Neutral Trees , 1994 .

[21]  Ron Kwok,et al.  A Mini-Surge on the Ryder Glacier, Greenland, Observed by Satellite Radar Interferometry , 1996, Science.

[22]  Charles F. Raymond,et al.  How do glaciers surge? A review , 1987 .

[23]  Johan J. Mohr,et al.  Three-dimensional glacial flow and surface elevation measured with radar interferometry , 1998, Nature.