Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data
Publisher's version (útgefin grein) 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 appro...
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Online Access: | https://hdl.handle.net/20.500.11815/2213 https://doi.org/10.3390/app10175848 |
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ftopinvisindi:oai:opinvisindi.is:20.500.11815/2213 2023-05-15T16:47:29+02:00 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 Saemundsson, Thorsteinn Tiede, Dirk Líf- og umhverfisvísindadeild (HÍ) Faculty of Life and Environmental Sciences (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland 2020-08-24 5848 https://hdl.handle.net/20.500.11815/2213 https://doi.org/10.3390/app10175848 en eng MDPI AG Applied Sciences;10(17) https://www.mdpi.com/2076-3417/10/17/5848/pdf 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. 2076-3417 https://hdl.handle.net/20.500.11815/2213 Applied Sciences doi:10.3390/app10175848 info:eu-repo/semantics/openAccess Digital elevation model Iceland InSAR Landslide Landslide dammed lake Object based image analysis River Sentinel-1 Sentinel-2 Skriðuföll Áhættugreining Fjarkönnun info:eu-repo/semantics/article 2020 ftopinvisindi https://doi.org/20.500.11815/2213 https://doi.org/10.3390/app10175848 2022-11-18T06:52:02Z Publisher's version (útgefin grein) 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. 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). Peer Reviewed Article in Journal/Newspaper Iceland Opin vísindi (Iceland) 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 |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Digital elevation model Iceland InSAR Landslide Landslide dammed lake Object based image analysis River Sentinel-1 Sentinel-2 Skriðuföll Áhættugreining Fjarkönnun |
spellingShingle |
Digital elevation model Iceland InSAR Landslide Landslide dammed lake Object based image analysis River Sentinel-1 Sentinel-2 Skriðuföll Áhættugreining Fjarkönnun Dabiri, Zahra Hölbling, Daniel Abad, Lorena Helgason, Jón Kristinn Saemundsson, Thorsteinn Tiede, Dirk Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
topic_facet |
Digital elevation model Iceland InSAR Landslide Landslide dammed lake Object based image analysis River Sentinel-1 Sentinel-2 Skriðuföll Áhættugreining Fjarkönnun |
description |
Publisher's version (útgefin grein) 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. 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). Peer Reviewed |
author2 |
Líf- og umhverfisvísindadeild (HÍ) Faculty of Life and Environmental Sciences (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland |
format |
Article in Journal/Newspaper |
author |
Dabiri, Zahra Hölbling, Daniel Abad, Lorena Helgason, Jón Kristinn Saemundsson, Thorsteinn Tiede, Dirk |
author_facet |
Dabiri, Zahra Hölbling, Daniel Abad, Lorena Helgason, Jón Kristinn Saemundsson, Thorsteinn Tiede, Dirk |
author_sort |
Dabiri, Zahra |
title |
Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_short |
Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_full |
Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_fullStr |
Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_full_unstemmed |
Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data |
title_sort |
assessment of landslide-induced geomorphological changes in hítardalur valley, iceland, using sentinel-1 and sentinel-2 data |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://hdl.handle.net/20.500.11815/2213 https://doi.org/10.3390/app10175848 |
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 |
Applied Sciences;10(17) https://www.mdpi.com/2076-3417/10/17/5848/pdf 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. 2076-3417 https://hdl.handle.net/20.500.11815/2213 Applied Sciences doi:10.3390/app10175848 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/2213 https://doi.org/10.3390/app10175848 |
container_title |
Applied Sciences |
container_volume |
10 |
container_issue |
17 |
container_start_page |
5848 |
_version_ |
1766037569962770432 |