Camera Monitoring at volcanoes identification and characterization of lava fountain activity and near-vent processes and their relevance for early warning systems
Dissertation, Universität Potsdam, 2018
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| Format: | UnknownFormat |
| Sprache: | eng |
| Veröffentlicht: |
Potsdam
2018
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| Schlagworte: |
Hochschulschrift
> Vulkan
> Eruption
> Lava
> Videoüberwachung
> Prognose
> Hawaii
> Island
> Vulkanismus
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| Online Zugang: | Inhaltsverzeichnis |
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Tag hinzufügen | Zusammenfassung: | Dissertation, Universität Potsdam, 2018 Basaltic fissure eruptions, such as on Hawai'i or on Iceland, are thought to be driven by the lateral propagation of feeder dikes and graben subsidence. Associated solid earth processes, such as deformation and structural development, are well studied by means of geophysical and geodetic technologies. The eruptions themselves, lava fountaining and venting dynamics, in turn, have been much less investigated due to hazardous access, local dimension, fast processes, and resulting poor data availability. This thesis provides a detailed quantitative understanding of the shape and dynamics of lava fountains and the morphological changes at their respective eruption sites. For this purpose, I apply image processing techniques, including drones and fixed installed cameras, to the sequence of frames of video records from two well-known fissure eruptions in Hawai'i and Iceland. This way I extract the dimensions of multiple lava fountains, visible in all frames. By putting these results together and considering the acquisition times of the ... |
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| Beschreibung: | kumulative Dissertation, enthält 4 Publikationen |
| Beschreibung: | viii, 140 Seiten Illustrationen, Diagramme, Karten |