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Status: Bibliographieeintrag
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Verfasst von:Anders, Katharina [VerfasserIn]   i
 Lindenbergh, Roderik C. [VerfasserIn]   i
 Vos, Sander [VerfasserIn]   i
 Mara, Hubert [VerfasserIn]   i
 de Vries, Sierd [VerfasserIn]   i
 Höfle, Bernhard [VerfasserIn]   i
Titel:High-frequency 3D geomorphic observation using hourly terrestrial laser scanning data of a sandy beach
Verf.angabe:K. Anders, R.C. Lindenbergh, S.E. Vos, H. Mara, S. de Vries, B. Höfle
E-Jahr:2019
Jahr:29 May 2019
Umfang:8 S.
Fussnoten:Gesehen am 17.06.2024
Titel Quelle:Enthalten in: ISPRS Geospatial Week (4. : 2019 : Enschede)ISPRS Geospatial Week 2019
Ort Quelle:[Göttingen] : [Copernicus Publications], 2019
Jahr Quelle:2019
Band/Heft Quelle:(2019), Seite 317-324
Abstract:Geomorphic processes occur spatially variable and at varying magnitudes, frequencies and velocities, which poses a great challenge to current methods of topographic change analysis. For the quantification of surface change, permanent terrestrial laser scanning (TLS) can generate time series of 3D point clouds at high temporal and spatial resolution. We investigate how the temporal interval influences volume change observed on a sandy beach regarding the temporal detail of the change process and the total volume budget, on which accretion and erosion counteract. We use an hourly time series of TLS point clouds acquired over six weeks in Kijkduin, the Netherlands. A raster-based approach of elevation differencing provides the volume change over time per square meter. We compare the hourly analysis to results of a three- and six-week observation period. For the larger period, a volume increase of 0.3 m3/ m2 is missed on a forming sand bar before it disappears, which corresponds to half its volume. Generally, a strong relationship is shown between observation interval and observed volume change. An increase from weekly to daily observations leads to a five times larger volume change quantified in total. Another important finding is a temporally variable measurement uncertainty in the 3D time series, which follows the daily course of air temperature. Further experiments are required to fully understand the effect of atmospheric conditions on high-frequency TLS acquisition in beach environments. Continued research of 4D geospatial analysis methods will enable automatic identification of dynamic change and improve the understanding of geomorphic processes.
DOI:doi:10.5194/isprs-annals-IV-2-W5-317-2019
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

kostenfrei: Volltext: https://doi.org/10.5194/isprs-annals-IV-2-W5-317-2019
 kostenfrei: Volltext: https://isprs-annals.copernicus.org/articles/IV-2-W5/317/2019/
 DOI: https://doi.org/10.5194/isprs-annals-IV-2-W5-317-2019
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:3D time series
 4D geospatial data
 beach monitoring
 change analysis
 LiDAR
 multitemporal point clouds
K10plus-PPN:1891380982
Verknüpfungen:→ Sammelwerk

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