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| Titel |
Brief communication "Importance of slope-induced error correction in volume change estimates from radar altimetry" |
| VerfasserIn |
R. T. W. L. Hurkmans, J. L. Bamber, J. A. Griggs |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 6, no. 2 ; Nr. 6, no. 2 (2012-04-03), S.447-451 |
| Datensatznummer |
250003490
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| Publikation (Nr.) |
 copernicus.org/tc-6-447-2012.pdf |
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| Zusammenfassung |
| In deriving elevation change rates (dH/dt) 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. |
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