Suggested by: Karima Hadj-Rabah
The two images are displacement maps of “Thessaly” earthquake (Mar.2021), the left one is according to the radar line of sight while the right one is according to the radar platform movement direction. (c) LTIR/USTHB
Short description
Ground displacement caused by geohazards such as earthquakes, volcanic
eruptions, and landslides is very challenging to monitor using traditional
methods (GNSS, geotechnical instruments,...). Satellite radar images, such as
those provided by Sentinel-1, offer a valuable way to detect and measure ground
movements over large areas. Two main techniques can be used for that purpose:
Differential Interferometric Synthetic Aperture Radar (DInSAR) and Multiple
Aperture Interferometry (MAI) to map displacement with high accuracy.
- Reviewing the state-of-the-art in geohazard displacement mapping using SAR data, with a focus on DInSAR and MAI techniques.
- Developing a workflow for processing Sentinel-1 images to generate displacement maps, using free tools such as ESA SNAP software.
- Applying the workflow to a specific case study such as an earthquake in California, volcanic activity of Etna, or landslide event in Salzburg.
- Evaluating the results and discussing how the displacement maps could help in disaster response or risk management.
The purpose of this master thesis is to conduct a case study-based analysis of displacement mapping techniques, with detailed documentation in English. The thesis is ideal for students with a background in remote sensing, and an interest in geohazard applications.
Suggested reading
Teodosio, B., Wasantha, P. L. P., Yaghoubi, E., Guerrieri, M., Fragomeni, S., & van Staden, R. C. (2022). Monitoring of geohazards using differential interferometric satellite aperture radar in Australia. International Journal of Remote Sensing, 43(10), 3769–3802.
Start
As soon as possible
Prerequisites/qualification
Interest in the topic
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