DC pole | Wartość | Język |
dc.contributor.author | Błaszczyk, Małgorzata | - |
dc.contributor.author | Ignatiuk, Dariusz | - |
dc.contributor.author | Grabiec, Mariusz | - |
dc.contributor.author | Kolondra, Leszek | - |
dc.contributor.author | Laska, Michał | - |
dc.contributor.author | Decaux, Leo | - |
dc.contributor.author | Jania, Jacek | - |
dc.contributor.author | Berthier, Etienne | - |
dc.contributor.author | Luks, Bartłomiej | - |
dc.contributor.author | Barzycka, Barbara | - |
dc.contributor.author | Czapla, Mateusz | - |
dc.date.accessioned | 2019-05-15T10:02:35Z | - |
dc.date.available | 2019-05-15T10:02:35Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Remote Sensing, Vol. 11 (2019), Art. No. 1121 | pl_PL |
dc.identifier.issn | 2072-4292 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/9124 | - |
dc.description.abstract | In this study, we assess the accuracy and precision of digital elevation models (DEM)
retrieved from aerial photographs taken in 2011 and from Very High Resolution satellite images
(WorldView-2 and Pléiades) from the period 2012–2017. Additionally, the accuracy of the freely
available Strip product of ArcticDEM was verified. We use the DEMs to characterize geometry
changes over Hansbreen and Hornbreen, two tidewater glaciers in southern Spitsbergen, Svalbard.
The satellite-based DEMs from WorldView-2 and Pléiades stereo pairs were processed using the
Rational Function Model (RFM) without and with one ground control point. The elevation quality
of the DEMs over glacierized areas was validated with in situ data: static di erential GPS survey
of mass balance stakes and GPS kinematic data acquired during ground penetrating radar survey.
Results demonstrate the usefulness of the analyzed sources of DEMs for estimation of the total
geodetic mass balance of the Svalbard glaciers. DEM accuracy is su cient to investigate glacier
surface elevation changes above 1 m. Strips from the ArcticDEM are generally precise, but some
of them showed gross errors and need to be handled with caution. The surface of Hansbreen and
Hornbreen has been lowering in recent years. The average annual elevation changes for Hansbreen
were more negative in the period 2015–2017 (2.4 m a1) than in the period 2011–2015 (1.7 m a1).
The average annual elevation changes over the studied area of Hornbreen for the period 2012–2017
amounted to 1.6 m a1. The geodetic mass balance for Hansbreen was more negative than the
climatic mass balance estimated using the mass budget method, probably due to underestimation of
the ice discharge. From 2011 to 2017, Hansbreen lost on average over 1% of its volume each year.
Such a high rate of relative loss illustrates how fast these glaciers are responding to climate change. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | DEM | pl_PL |
dc.subject | Pléiades | pl_PL |
dc.subject | WorldView | pl_PL |
dc.subject | glacier mass balance | pl_PL |
dc.subject | Svalbard | pl_PL |
dc.subject | tidewater glaciers | pl_PL |
dc.title | Quality Assessment and Glaciological Applications of Digital Elevation Models Derived from Space-Borne and Aerial Images over Two Tidewater Glaciers of Southern Spitsbergen | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.3390/rs11091121 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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