文章基本信息

标题：Determination of Spatio-Temporal Velocity Fields on Glaciers in West-Greenland by Terrestrial Image Sequence Analysis
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作者：Hans-Gerd Maas ; Ellen Schwalbe ; Reinhard Dietrich 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII-B8
页码：1419-1424
出版社：Copernicus Publications
摘要：Some glaciers in Greenland are currently showing dramatic changes: A fast retreat of the glacier front, thinning and acceleration of glacier movement. As a prominent example, Jacobshavn Isbr. glacier has accelerated from 20 meters per day to 40 meters per day within a few years. These effects can very well be observed by photogrammetric and remote sensing techniques. In the paper, we report on recent measurements at three glaciers in West Greenland: Jacobshavn Isbr., Eqip Sermia and St.re Qarajaq. The paper will concentrate on the determination of spatio-temporal velocity fields from high resolution terrestrial image sequences captured by a 39- Megapixel camera. In addition, the glacier front retreat has been mapped from multi-temporal satellite images, and a terrestrial laserscanner has been used to determine glacier surface models and glacier motion from multiple scans. The results of the photogrammetric measurements form a valuable basis for glaciological research on the changing behavior of glaciers
关键词：Glaciology; Motion analysis; Image sequences