文章基本信息

标题：Brief communication "Importance of slope-induced error correction in volume change estimates from radar altimetry"
本地全文：下载
作者：R. T. W. L. Hurkmans ; J. L. Bamber ; J. A. Griggs 等
期刊名称：The Cryosphere
印刷版ISSN：1994-0416
电子版ISSN：1994-0424
出版年度：2012
卷号：06
期号：02
页码：447-451
DOI：10.5194/tc-6-447-2012
出版社：Copernicus Publications
摘要：. In deriving elevation change rates (d H /d t ) from radar altimetry, the slope-induced error is usually assumed to cancel out in repeat measurements. These measurements, however, represent a location that can be significantly further upslope than assumed, causing an underestimate of the basin-integrated volume change. In a case-study for the fast-flowing part of Jakobshavn Isbræ, we show that a relatively straightforward correction for slope-induced error increases elevation change rates by up to several metres per year and significantly reduces the volume change error with respect to laser altimetry for the area of interest.