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...

Full description

Bibliographic Details
Published in:Applied Sciences
Main Authors: Zahra Dabiri, Daniel Hölbling, Lorena Abad, Jón Kristinn Helgason, Þorsteinn Sæmundsson, Dirk Tiede
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2020
Subjects:
T
Online Access:https://doi.org/10.3390/app10175848
https://doaj.org/article/ecec97d58a894acabf947ec0cea8ea22
id ftdoajarticles:oai:doaj.org/article:ecec97d58a894acabf947ec0cea8ea22
record_format openpolar
spelling ftdoajarticles:oai:doaj.org/article:ecec97d58a894acabf947ec0cea8ea22 2023-05-15T16:48:12+02:00 Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data Zahra Dabiri Daniel Hölbling Lorena Abad Jón Kristinn Helgason Þorsteinn Sæmundsson Dirk Tiede 2020-08-01T00:00:00Z https://doi.org/10.3390/app10175848 https://doaj.org/article/ecec97d58a894acabf947ec0cea8ea22 EN eng MDPI AG https://www.mdpi.com/2076-3417/10/17/5848 https://doaj.org/toc/2076-3417 doi:10.3390/app10175848 2076-3417 https://doaj.org/article/ecec97d58a894acabf947ec0cea8ea22 Applied Sciences, Vol 10, Iss 5848, p 5848 (2020) object-based image analysis Sentinel-1 Sentinel-2 digital elevation model InSAR landslide Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 article 2020 ftdoajarticles https://doi.org/10.3390/app10175848 2022-12-31T01:15:45Z 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. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles 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 Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic object-based image analysis
Sentinel-1
Sentinel-2
digital elevation model
InSAR
landslide
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
spellingShingle object-based image analysis
Sentinel-1
Sentinel-2
digital elevation model
InSAR
landslide
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
Zahra Dabiri
Daniel Hölbling
Lorena Abad
Jón Kristinn Helgason
Þorsteinn Sæmundsson
Dirk Tiede
Assessment of Landslide-Induced Geomorphological Changes in Hítardalur Valley, Iceland, Using Sentinel-1 and Sentinel-2 Data
topic_facet object-based image analysis
Sentinel-1
Sentinel-2
digital elevation model
InSAR
landslide
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
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.
format Article in Journal/Newspaper
author Zahra Dabiri
Daniel Hölbling
Lorena Abad
Jón Kristinn Helgason
Þorsteinn Sæmundsson
Dirk Tiede
author_facet Zahra Dabiri
Daniel Hölbling
Lorena Abad
Jón Kristinn Helgason
Þorsteinn Sæmundsson
Dirk Tiede
author_sort Zahra Dabiri
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://doi.org/10.3390/app10175848
https://doaj.org/article/ecec97d58a894acabf947ec0cea8ea22
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_source Applied Sciences, Vol 10, Iss 5848, p 5848 (2020)
op_relation https://www.mdpi.com/2076-3417/10/17/5848
https://doaj.org/toc/2076-3417
doi:10.3390/app10175848
2076-3417
https://doaj.org/article/ecec97d58a894acabf947ec0cea8ea22
op_doi https://doi.org/10.3390/app10175848
container_title Applied Sciences
container_volume 10
container_issue 17
container_start_page 5848
_version_ 1766038311681392640