On the suitability of the SRTM DEM and ASTER GDEM for the compilation of topographic parameters in glacier inventories

被引:136
作者
Frey, Holger [1 ]
Paul, Frank [1 ]
机构
[1] Univ Zurich, Dept Geog, CH-8057 Zurich, Switzerland
来源
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION | 2012年 / 18卷
关键词
SRTM; ASTER GDEM; Glacier inventory; Topographic parameter; GLIMS;
D O I
10.1016/j.jag.2011.09.020
中图分类号
TP7 [遥感技术];
学科分类号
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要
Topographic parameters in glacier inventories are of vital importance for several subsequent applications. In combination with digital elevation models (DEMs) with near global coverage, such parameters can in principle be derived for all digital glacier outlines. In this study we investigate the suitability of the SRTM DEM and the ASTER GDEM for the compilation of seven glacier-specific topographic parameters for a sample of 1786 Swiss glaciers. Both DEMs were applied in two different resolutions, and the obtained parameter values were compared to values derived from the Swiss national DEM (DHM25), which served as the reference. The analysis revealed that large differences of the values can occur on individual glaciers, but they average out for larger glacier samples. Parameters that depend on a single DEM value (e.g. minimum or maximum elevation) show a larger variability than parameters that are averaged over the entire glacier area (e.g. mean elevation or mean slope). Besides artifacts, also changes due to different acquisition dates and techniques (radar, optical) have an influence on the inventory parameters. Although the SRTM DEM yielded slightly better results than the ASTER GDEM, both DEMs are suitable for the compilation of topographic parameters in glacier inventories. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:480 / 490
页数:11
相关论文
共 34 条
[1]  
Abrams M, 2010, PHOTOGRAMM ENG REM S, V76, P344
[2]  
[Anonymous], 2006, 107 GCOS
[3]   Landsat-based inventory of glaciers in western Canada, 1985-2005 [J].
Bolch, Tobias ;
Menounos, Brian ;
Wheate, Roger .
REMOTE SENSING OF ENVIRONMENT, 2010, 114 (01) :127-137
[4]   SRTM C-band and ICESat laser altimetry elevation comparisons as a function of tree cover and relief [J].
Carabajal, CC ;
Harding, DJ .
PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING, 2006, 72 (03) :287-298
[5]   A more complete version of the World Glacier Inventory [J].
Cogley, J. Graham .
ANNALS OF GLACIOLOGY, 2009, 50 (53) :32-38
[7]   What causes partial cloudiness to form in multilayered midlevel clouds? A simulated case study [J].
Falk, Michael J. ;
Larson, Vincent E. .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2007, 112 (D12)
[8]   The shuttle radar topography mission [J].
Farr, Tom G. ;
Rosen, Paul A. ;
Caro, Edward ;
Crippen, Robert ;
Duren, Riley ;
Hensley, Scott ;
Kobrick, Michael ;
Paller, Mimi ;
Rodriguez, Ernesto ;
Roth, Ladislav ;
Seal, David ;
Shaffer, Scott ;
Shimada, Joanne ;
Umland, Jeffrey ;
Werner, Marian ;
Oskin, Michael ;
Burbank, Douglas ;
Alsdorf, Douglas .
REVIEWS OF GEOPHYSICS, 2007, 45 (02)
[9]  
HAEBERLI W, 1995, ANNALS OF GLACIOLOGY, VOL 21, 1995, P206, DOI 10.3189/S0260305500015834
[10]   Characterization and quantification of data voids in the shuttle radar iopography mission data [J].
Hall, O ;
Falorni, G ;
Bras, RL .
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2005, 2 (02) :177-181