Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data
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...
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Language: | English |
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Online Access: | https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-18513 https://doi.org/10.3390/app10175848 https://eplus.uni-salzburg.at/doi/10.3390/app10175848 |
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ftunivsalzburg:oai:eplus.uni-salzburg.at:5332695 2023-05-15T16:47:12+02:00 Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data Dabiri, Zahra Hölbling, Daniel Abad, Lorena Helgason, Jón Kristinn Þorsteinn Sæmundsson Tiede, Dirk 38.03 38.99 PLUS:IFFB:ZGIS 2020 text/html https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-18513 https://doi.org/10.3390/app10175848 https://eplus.uni-salzburg.at/doi/10.3390/app10175848 eng eng MDPI vignette : https://eplus.uni-salzburg.at/titlepage/urn/urn:nbn:at:at-ubs:3-18513/128 vignette : https://eplus.uni-salzburg.at/titlepage/doi/10.3390/app10175848/128 urn:nbn:at:at-ubs:3-18513 https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-18513 doi:10.3390/app10175848 https://eplus.uni-salzburg.at/doi/10.3390/app10175848 local:99145569963903331 system:AC15728513 cc-by_4 Objekt-basierte Bildanalyse Sentinel-1 Sentinel-2 Digitales Höhenmodell InSAR Rutschung Durch Rutschung aufgestauter See Fluß Island Object-based image analysis Digital elevation model Landslide Landslide-dammed lake River Iceland Text Article 2020 ftunivsalzburg https://doi.org/10.3390/app10175848 2023-04-09T04:53:34Z 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. Zahra Dabiri, Daniel Hölbling, Lorena Abad, Jón Kristinn Helgason, Þorsteinn Sæmundsson and Dirk Tiede FWF-P29461-N29 Article in Journal/Newspaper Iceland ePLUS - Open Access Publikationsserver der Universität Salzburg Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) Hítará ENVELOPE(-22.335,-22.335,64.698,64.698) Hítardalur ENVELOPE(-22.067,-22.067,64.767,64.767) Applied Sciences 10 17 5848 |
institution |
Open Polar |
collection |
ePLUS - Open Access Publikationsserver der Universität Salzburg |
op_collection_id |
ftunivsalzburg |
language |
English |
topic |
Objekt-basierte Bildanalyse Sentinel-1 Sentinel-2 Digitales Höhenmodell InSAR Rutschung Durch Rutschung aufgestauter See Fluß Island Object-based image analysis Digital elevation model Landslide Landslide-dammed lake River Iceland |
spellingShingle |
Objekt-basierte Bildanalyse Sentinel-1 Sentinel-2 Digitales Höhenmodell InSAR Rutschung Durch Rutschung aufgestauter See Fluß Island Object-based image analysis Digital elevation model Landslide Landslide-dammed lake River Iceland Dabiri, Zahra Hölbling, Daniel Abad, Lorena Helgason, Jón Kristinn Þorsteinn Sæmundsson Tiede, Dirk Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
topic_facet |
Objekt-basierte Bildanalyse Sentinel-1 Sentinel-2 Digitales Höhenmodell InSAR Rutschung Durch Rutschung aufgestauter See Fluß Island Object-based image analysis Digital elevation model Landslide Landslide-dammed lake River Iceland |
description |
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. Zahra Dabiri, Daniel Hölbling, Lorena Abad, Jón Kristinn Helgason, Þorsteinn Sæmundsson and Dirk Tiede FWF-P29461-N29 |
format |
Article in Journal/Newspaper |
author |
Dabiri, Zahra Hölbling, Daniel Abad, Lorena Helgason, Jón Kristinn Þorsteinn Sæmundsson Tiede, Dirk |
author_facet |
Dabiri, Zahra Hölbling, Daniel Abad, Lorena Helgason, Jón Kristinn Þorsteinn Sæmundsson Tiede, Dirk |
author_sort |
Dabiri, Zahra |
title |
Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_short |
Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_full |
Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_fullStr |
Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_full_unstemmed |
Applied Sciences / Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_sort |
applied sciences / assessment of landslide-induced geomorphological changes in hítardalur valley, iceland, using sentinel-1 and sentinel-2 data |
publisher |
MDPI |
publishDate |
2020 |
url |
https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-18513 https://doi.org/10.3390/app10175848 https://eplus.uni-salzburg.at/doi/10.3390/app10175848 |
op_coverage |
38.03 38.99 PLUS:IFFB:ZGIS |
long_lat |
ENVELOPE(-68.258,-68.258,68.496,68.496) ENVELOPE(-22.335,-22.335,64.698,64.698) ENVELOPE(-22.067,-22.067,64.767,64.767) |
geographic |
Dammed Lake Hítará Hítardalur |
geographic_facet |
Dammed Lake Hítará Hítardalur |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
vignette : https://eplus.uni-salzburg.at/titlepage/urn/urn:nbn:at:at-ubs:3-18513/128 vignette : https://eplus.uni-salzburg.at/titlepage/doi/10.3390/app10175848/128 urn:nbn:at:at-ubs:3-18513 https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-18513 doi:10.3390/app10175848 https://eplus.uni-salzburg.at/doi/10.3390/app10175848 local:99145569963903331 system:AC15728513 |
op_rights |
cc-by_4 |
op_doi |
https://doi.org/10.3390/app10175848 |
container_title |
Applied Sciences |
container_volume |
10 |
container_issue |
17 |
container_start_page |
5848 |
_version_ |
1766037289448767488 |