dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Dabiri, Zahra |
dc.contributor.author |
Hölbling, Daniel |
dc.contributor.author |
Abad, Lorena |
dc.contributor.author |
Helgason, Jón Kristinn |
dc.contributor.author |
Saemundsson, Thorsteinn |
dc.contributor.author |
Tiede, Dirk |
dc.date.accessioned |
2020-11-17T15:14:35Z |
dc.date.available |
2020-11-17T15:14:35Z |
dc.date.issued |
2020-08-24 |
dc.identifier.citation |
Dabiri, Z.; Hölbling, D.; Abad, L.; Helgason, J.K.; Sæmundsson, Þ.; Tiede, D. Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data. Applied Sciences 2020, 10, 5848. |
dc.identifier.issn |
2076-3417 |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/2213 |
dc.description |
Publisher's version (útgefin grein) |
dc.description.abstract |
Landslide mapping and analysis are essential aspects of hazard and risk analysis. Landslides can block rivers and create landslide-dammed lakes, which pose a significant risk for downstream areas. In this research, we used an object-based image analysis approach to map geomorphological features and related changes and assess the applicability of Sentinel-1 data for the fast creation of post-event digital elevation models (DEMs) for landslide volume estimation. We investigated the Hítardalur landslide, which occurred on the 7 July 2018 in western Iceland, along with the geomorphological changes induced by this landslide, using optical and synthetic aperture radar data from Sentinel-2 and Sentinel-1. The results show that there were no considerable changes in the landslide area between 2018 and 2019. However, the landslide-dammed lake area shrunk between 2018 and 2019. Moreover, the Hítará river diverted its course as a result of the landslide. The DEMs, generated by ascending and descending flight directions and three orbits, and the subsequent volume estimation revealed that-without further post-processing-the results need to be interpreted with care since several factors influence the DEM generation from Sentinel-1 imagery. |
dc.description.sponsorship |
This research has been supported by the Austrian Science Fund (FWF) through the project MORPH (Mapping, monitoring and modelling the spatio-temporal dynamics of land surface morphology; FWF-P29461-N29) and the Doctoral Collage GIScience (DKW1237-N23), as well as by the Austrian Academy of Sciences (?AW) through the project RiCoLa (Detection and analysis of landslide-induced river course changes and lake formation). |
dc.format.extent |
5848 |
dc.language.iso |
en |
dc.publisher |
MDPI AG |
dc.relation.ispartofseries |
Applied Sciences;10(17) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Digital elevation model |
dc.subject |
Iceland |
dc.subject |
InSAR |
dc.subject |
Landslide |
dc.subject |
Landslide dammed lake |
dc.subject |
Object based image analysis |
dc.subject |
River |
dc.subject |
Sentinel-1 |
dc.subject |
Sentinel-2 |
dc.subject |
Skriðuföll |
dc.subject |
Áhættugreining |
dc.subject |
Fjarkönnun |
dc.title |
Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
dc.type |
info:eu-repo/semantics/article |
dcterms.license |
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Applied Sciences |
dc.identifier.doi |
10.3390/app10175848 |
dc.relation.url |
https://www.mdpi.com/2076-3417/10/17/5848/pdf |
dc.contributor.department |
Líf- og umhverfisvísindadeild (HÍ) |
dc.contributor.department |
Faculty of Life and Environmental Sciences (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |