TanDEM-X for mass balance of glaciers and subglacial volcanic activities

Floricioiu, Dana; Jaber, Wael Abdel; Minet, Christian; Rossi, Cristian; Eineder, Michael

doi:10.1109/igarss.2015.7326422

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…The morphological study comparing DEMs acquired before and after the eruption is based on (i) satellite imagery and results from the TanDEM-X and WorldView-2 satellite missions and (ii) field data attained at key locations by camera drones and terrestrial laser scanning (TLS). A detailed description of the TanDEM-X data can be found in Floricioiu et al (2015) and Rossi et al (2016), and of our field data in Müller et al 2017, respectively.…”

Section: Collected Datamentioning

confidence: 99%

The Relationship Between Lava Fountaining and Vent Morphology for the 2014–2015 Holuhraun Eruption, Iceland, Analyzed by Video Monitoring and Topographic Mapping

et al. 2018

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Section: Collected Datamentioning

confidence: 99%

The Relationship Between Lava Fountaining and Vent Morphology for the 2014–2015 Holuhraun Eruption, Iceland, Analyzed by Video Monitoring and Topographic Mapping

et al. 2018

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“…The structural overview presented here is based on the analysis of satellite imagery and the results of the TanDEM-X satellite mission (Floricioiu et al, 2015;Rossi et al, 2016). For further details on the TanDEM-X data, we refer to those publications.…”

Section: Satellite Datamentioning

confidence: 99%

“…Due to the large dimensions, a good overview of the morphological expressions of the graben is given by satellitebased DEMs, such as those that were earlier presented (Floricioiu et al, 2015;Rossi et al, 2016) or in our study. Given the identified reactivation of preexisting faults (Ruch et al, 2016), we can only speculate about their offset prior to our measurement campaign.…”

Section: Graben Expression and Vertical Throwmentioning

confidence: 99%

“…Satellite radar data allowed the survey of these structures at a resolution of better than 10 m (Floricioiu et al, 2015;Rossi et al, 2016); these data revealed details about the crater row and the eruptive fissure. Compared to the crater row of the previous eruption in 1797/98, its final shape is composed of only four major vents along the main fissure, the highest of which (Baugur crater, Figure 2D) reached a height of ∼100 meters.…”

Section: Introductionmentioning

confidence: 99%

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High-Resolution Digital Elevation Modeling from TLS and UAV Campaign Reveals Structural Complexity at the 2014/2015 Holuhraun Eruption Site, Iceland

et al. 2017

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Fissure eruptions are commonly linked to magma dikes at depth and are associated with elastic and inelastic surface deformation. Elastic deformation is well described by subsidence occurring above the dike plane and uplift and lateral widening occurring perpendicular to the dike plane. Inelastic deformation is associated with the formation of a graben, which is bordered by graben parallel faults that might express as sets of fractures at the surface. Additionally, secondary structures, such as push-ups, bends and step overs, yield information about the deforming domain. However, once these structures are formed during fissure eruptions, they are rarely preserved in nature, due to the effects of rapid erosion, sediment coverage or overprinting by other faulting events. Therefore, simple normal fault displacements are commonly assumed at dikes. At the 2014/2015 Holuhraun eruption sites (Iceland), increasing evidence suggests that developing fractures exhibited variations in their displacement modes. In an attempt to investigate these variations, a fieldwork mapping project combining Terrestrial Laser Scanning (TLS) and Unmanned Aerial Vehicle (UAV)-based aerophoto analysis was undertaken. Using these data, we generated local high-resolution Digital Elevation Models (DEMs) and a structural map that facilitated the identification of kinematic indicators and the assessment of the observed structures. We identified 315 fracture segments from these satellite data. We measured the strike directions of single segments, including the amount of opening and opening angles, which indicate that many of the measured fractures show transtensional dislocations. Of these, ∼81% exhibit a significant left-lateral component and only ∼17% exhibit a right-lateral component. Here, we demonstrate that the local complexities in these fracture traces and geometries are closely related to variations in their transtensional opening directions. Moreover, we identified local changes in fracture azimuths and offsets close to eruption sites, which we speculate are associated with geometric changes in the magma feeder itself. The results highlight that the opening of fractures associated with an erupting fissure Müller et al. Structures at Holuhraun may record transtensional modes with both, left-lateral and right-lateral components. These results further highlight the value of using UAV-based high-resolution data to contribute to the integrity of the observations of the structural complexities produced by local geologic events.

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