Geodetic and satellite derived ice surface velocities of Vestfonna ice cap
| Cobertura |
MEDIAN LATITUDE: 79.941088 * MEDIAN LONGITUDE: 19.727943 * SOUTH-BOUND LATITUDE: 79.866660 * WEST-BOUND LONGITUDE: 18.977850 * NORTH-BOUND LATITUDE: 80.024850 * EAST-BOUND LONGITUDE: 20.715040 |
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| Data(s) |
22/08/2011
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| Resumo |
During 2007 we launched a geodetic campaign on the Svalbard ice cap Vestfonna in order to estimate the velocity field of the ice cap. This was done within the frame of the IPY project KINNVIKA. We present here the velocity measurements derived from our campaigns 2007-2010 and compare the geodetic measurements against InSAR velocity fields from satellite platforms from 1995/96 and 2008. We find the spatial distribution of ice speeds from the InSAR is in good agreement within the uncertainty limits with our geodetic measurements. We observe no clear indication of seasonal ice speed differences, but we find a speed-up of the outlet glacier Franklinbreen between the InSAR campaigns, and speculate the outlet is having a surge phase. |
| Formato |
application/zip, 3 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.818291 doi:10.1594/PANGAEA.818291 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Pohjola, Veijo A; Christoffersen, Poul; Kolondra, Leszek; Moore, John C; Pettersson, Rickard; Schäfer, Martina; Strozzi, Tazio; Reijmer, Carleen (2011): Spatial distribution and change in the surface ice-velocity field of Vestfonna ice cap, Nordaustlandet, Svalbard, 1995-2010 using geodetic and satellite interferometry data. Geografiska Annaler Series A-Physical Geography, 93(4), 323-335, doi:10.1111/j.1468-0459.2011.00441.x |
| Palavras-Chave | #combined uncertainty for both the geodetical and the InSAR methods; Comment; Coverage; Days, cumulated; Days cum; Diff; Difference; difference of u(xy) max - u(xy) min for each station [m]; Differential global positioning system (DGPS); Elevation; ELEVATION; Error; Event; fraction of the range of total value of u(xy); in m; # = std dev of IMAU GPS at Weasel base May 2009-May 2010; InSAR 1995/96 (Tandem Phase ERS-1/2 SAR); InSAR 2008 (ALOS PALSAR); InSAR 2008-DGPS; InSAR 95/96-DGPS; International Polar Year (2007-2008); IPY; JJA/DJF; JJA = June-August, DJF = December-February; Range; Ratio; Season; Station; Time coverage; u(xy); u(xy), average over study period; UTM east; UTM Easting, Universal Transverse Mercator; UTM north; UTM Northing, Universal Transverse Mercator; UTM Zone; UTM Zone, Universal Transverse Mercator; Vel mag; Velocity magnitude; with available ice velocity data |
| Tipo |
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