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Yuan, Y. (author)
Permafrost in high-arctic regions has been very much influenced by global warming. Many thousands of square kilometers of permafrost are under certain degree of thawing. Site measurements have provided useful data for researchers. However, these ground-based measurements are usually site-specific with poor spatial coverage. Here we apply Multi...
master thesis 2011
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Van der Torren, P.T. (author)
In this study methods are developed for improved analysis and processing of PSI data. PSI, or radar interferometry, makes it possible to use satellite radar images to measure deformation of the Earth’s surface and objects on it with millimetre accuracy. However, interpretation of the measurements and identifying the actually measured objects is...
master thesis 2011
document
Soni, N.K. (author)
Phase unwrapping algorithm for InSAR
master thesis 2012
document
Van Oostveen, J.G. (author)
During 1997-2000 Dyngjujökull, one of the major outlet glaciers of the main Icelandic ice cap Vatnajökull, surged. This event was captured by ERS 1 and 2 satellites flying in tandem mode, enabling the use of InSAR to monitor the motion of the glacier. Since a major limitation of InSAR is its sensitivity to deformation in only one dimension, the...
master thesis 2014
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Van Waning, H.W. (author)
The last years have seen a few severe cases of structural damage to buildings in the Netherlands. A recent case was the shopping mall ‘t Loon in Heerlen. It would be beneficial if structural failures could be avoided, or at least be predicted. New satellite technology, Interferometric Synthetic Aperture Radar (InSAR), proves that it is possible...
master thesis 2014
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Van der Horst, T. (author)
Inhabitants and ecosystems in delta areas are becoming increasingly vulnerable to the effects of subsidence, triggered both by natural causes and anthropogenic causes. Yangon is a city in the Irrawaddy delta in Myanmar where little is known about the true extent of this hazard, while its effects can potentially harm millions of its inhabitants....
master thesis 2017
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Verburg, Quintus (author)
Parameter and ambiguity estimation in the temporal domain, for arcs of differential phase observations between two persistent scatterers (PS), is a critical part in Persistent Scatterer Interferometry (PSI). Deformation models, used as constraint in the parameter estimation, often do not capture the full extent of the deformation behaviour. This...
master thesis 2017
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Beers, Karlijn (author)
This thesis explores the usage of the particle filter as a data assimilation technique to estimate subsurface processes, such as reservoir volume change from space-geodetic PS-InSAR surface measurements. The specific research area is Groningen, where subsidence is induced by hydrocarbon and salt production.<br/>The satellite radar PS-InSAR...
master thesis 2018
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Li, Weiran (author)
Climate change has been a heated topic in recent years, and the mass loss of ice sheets is one aspect of it. The Antarctic Ice Sheet has experienced certain mass loss in the form of ice-shelf collapse and (sub-)surface melting, but thorough study remains limited due to the remote location of the continent. Therefore, remote sensing is expected...
master thesis 2018
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de Jong, Jarco (author)
This thesis explores the use of InSAR data for building monitoring. The area of main interest is the city centre of Amsterdam, where quay wall replacements are necessary on a large scale. In Amsterdam, the foundation quality needs to be checked before construction activities nearby are performed, such as a quay wall replacement. Levelling...
master thesis 2018
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Driebergen, Joost (author)
Almost four million people in the Netherlands who live below sea level are protected by 17000 km of dikes against the water. Since deformation can be an indicator of a developing failure mechanism, information about this parameter can help authorities to detect weak spots in the dutch water defense structures. <br/>In this research, Radar...
master thesis 2019
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Kamphuis, Jurjen (author)
Geodesists use multiple methods to monitor surface deformation. This gives the opportunity to integrate complementary data for better interpretation of deformation processes. The integration of data has to deal with: (1) spatio-temporal differences in sampling methodologies, meaning that observed objects are not the same and thus observed...
master thesis 2019
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Verbeek, Joost (author)
It is estimated that about 400.000 houses in the Netherlands – both shallow and wooden pile foundations – could be facing problems with their foundations. Although, house owners are becoming increasingly aware of the fact that problems (and thereby costs) can be prevented if remedial measures are taken in time. Monitoring of the foundation can...
master thesis 2019
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Vleugels, Jef (author)
In the Netherlands, the Delta Programme aspires to adjust spatial planning climate-proof and water-resilient, in order to be prepared for extreme weather in 2050. To achieve this ambition, municipalities, provinces, regional water authorities and central governments conduct stress tests to map out the vulnerabilities in their areas of authority...
master thesis 2019
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Bemelmans, Mark (author)
We use ground and space geodetic data to study surface deformation and gravity change at Kīlauea volcano from January to September 2015. This period includes an episode of heightened activity in May 2015, which we refer to as ’the May 2015 event’. The data set consists of Global Navigation Satellite System (GNSS), tilt, visual and seismic time...
master thesis 2019
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Bruna, Marc (author)
Subsidence is affecting different parts of the Netherlands. The strongest subsidence is observed in the province of Groningen due to ongoing natural gas extraction. Subsidence is also observed at several locations in the province of South Holland, where the processes of peat oxidation, soil compaction and the withdrawal of groundwater are at the...
master thesis 2020
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Korevaar, A. (author)
In this study an analysis of the efficacy of using satellite data, in the form of InSAR measurements, as an extension of the volcanic monitoring network on Saba and St. Eustatius is performed. For this research, data from three different satellites that operate at three different wavelengths are available: ALOS-2 (L-band SAR), Sentinel-1 (C-band...
master thesis 2020
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Raghunathan, Pavithra (author)
The Netherlands has for long been witnessing problems due to subsidence. While urban infrastructure is mostly safeguarded from differential settlement by deep pile foundations, the same cannot be said about greenhouses. The greenhouses of the Netherlands has enabled the country to become the largest exporter of vegetables, second only to the...
master thesis 2020
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Patel, Karsh (author)
The introduction of artificial reflectors in the areas to be imaged by a radar sensor facilitates interferometric analysis over regions of weak coherence between acquisitions. Traditionally, corner reflectors have been utilized; whose strong and stable scattering characteristics make them suitable for these purposes. Such reflectors also provide...
master thesis 2020
document
van Hout, Ylana (author)
Glacial lake outburst floods (GLOFs) are outbursts caused by the failure of glacial lake moraine dams. Longer ongoing processes, such as moraine dam degradation, or instantaneous events, such as landslides, can trigger dam failure. GLOFs have a catastrophic downstream impact leading to significant economic damages and more than 12000 casualties...
master thesis 2021
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