ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., II-5/W2, 253-258, 2013
http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/II-5-W2/253/2013/
doi:10.5194/isprsannals-II-5-W2-253-2013
© Author(s) 2013. This work is distributed
under the Creative Commons Attribution 3.0 License.
 
16 Oct 2013
Application of glas laser altimetry to detect elevation changes in East Antarctica
M. Scaioni1, X. Tong1, and R. Li1,2 1Tongji University, College of Surveying and Geo-Informatics Center for Spatial Information Science and Sustainable Development Applications 1239 Siping Road, 200092 Shanghai, P. R. China
2The Ohio State University, Mapping and GIS Lab 470 Hitchcock Hall, 2070 Neil Avenue, Columbus, OH 43210-1275, USA
Keywords: Change detection, East Antarctica, ice-sheet, ICESat/GLAS, laser altimetry, remote sensing Abstract. In this paper the use of ICESat/GLAS laser altimeter for estimating multi-temporal elevation changes on polar ice sheets is afforded. Due to non-overlapping laser spots during repeat passes, interpolation methods are required to make comparisons. After reviewing the main methods described in the literature (crossover point analysis, cross-track DEM projection, space-temporal regressions), the last one has been chosen for its capability of providing more elevation change rate measurements. The standard implementation of the space-temporal linear regression technique has been revisited and improved to better cope with outliers and to check the estimability of model’s parameters. GLAS data over the PANDA route in East Antarctica have been used for testing. Obtained results have been quite meaningful from a physical point of view, confirming the trend reported by the literature of a constant snow accumulation in the area during the two past decades, unlike the most part of the continent that has been losing mass.
Conference paper (PDF, 504 KB)


Citation: Scaioni, M., Tong, X., and Li, R.: Application of glas laser altimetry to detect elevation changes in East Antarctica, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., II-5/W2, 253-258, doi:10.5194/isprsannals-II-5-W2-253-2013, 2013.

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