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  • 1
    Book
    Book
    Crustal structure along the central Sunda margin, Indonesia (2001)
    Details Availability
    Keywords: Crustal structure ; Sunda Margin ; Dissertation ; Hochschulschrift
    Description / Table of Contents: Abstract ; Zs.-Fassung
    Type of Medium: Book
    Pages: 138, X, III S. , Ill., graph. Darst., Kt.
    URL: http://e-diss.uni-kiel.de/diss_439/
    Language: English
    Note: Kiel, Univ., Diss., 2001
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  • 2
    Online Resource
    Online Resource
    Crustal structure along the central Sunda margin, Indonesia (2001)
    Details Availability
    Keywords: Crustal structure ; Sunda Margin ; Dissertation ; Hochschulschrift
    Description / Table of Contents: Abstract ; Zs.-Fassung
    Type of Medium: Online Resource
    Pages: Online-Ressource (138, X, III S = 76.61 MB, Text) , Ill., graph. Darst., Kt.
    Edition: [Electronic ed.]
    URL: http://macau.uni-kiel.de/receive/dissertation_diss_00000439
    URL: http://nbn-resolving.de/urn:nbn:de:gbv:8-diss-4395
    URN: urn:nbn:de:gbv:8-diss-4395
    Language: English
    Note: Kiel, Univ., Diss., 2001
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  • 3
    Online Resource
    Online Resource
    Crustal structure along the central Sunda margin, Indonesia (2001)
    Kiel
    Details Availability
    Keywords: Crustal structure ; Sunda Margin ; Dissertation ; Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource ( 167Seiten = 77MB) , Ill., graph. Darst., Kt.
    URL: https://oceanrep.geomar.de/id/eprint/31069/
    Language: English
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  • 4
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    Crustal structure of the Ionian basin and eastern Sicily margin: results from a wide-angle seismic survey (2018)
    American Geophysical Union
    Details
    Publication Date: 2019-03-26
    Description: In the Ionian Sea (Central Mediterranean) the slow convergence between Africa and Eurasia results in the formation of a narrow subduction zone. The nature of the crust of the subducting plate remains debated and could represent the last remnants of the Neo-Tethys ocean. The origin of the Ionian basin is also under discussion, especially concerning the rifting mechanisms as the Malta Escarpment could represent a remnant of this opening. This subduction retreat toward the south-east (motion occurring since the last 35 Ma) but is confined to the narrow Ionian Basin. A major lateral slab tear fault is required to accommodate the slab roll-back. This fault is thought to propagate along the eastern Sicily margin but its precise location remains controversial. This study focuses on the deep crustal structure of the Eastern-Sicily margin and the Malta Escarpment. We present two two-dimensional P-wave velocity models obtained from forward modeling of wide-angle seismic data acquired onboard the R/V Meteor during the DIONYSUS cruise in 2014. The results image an oceanic crust within the Ionian basin as well as the deep structure of the Malta Escarpment, which presents characteristics of a transform margin. A deep and asymmetrical sedimentary basin is imaged south of the Messina strait and seems to have opened between the Calabrian and Peloritan continental terranes. The interpretation of the velocity models suggests that the tear fault is located east of the Malta Escarpment, along the Alfeo fault system (AFS).
    Description: The DIONYSUS cruise is funded through the Deutsche Forschungsgemeinschaft DFG.
    Description: Published
    Description: 2090-2114
    Description: 1T. Struttura della Terra
    Description: JCR Journal
    Keywords: Crustal structure ; Subduction ; Crustal structure of the Ionian basin and eastern Sicily margin: results from a wide-angle seismic survey.
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
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    Gravitational collapse of Mount Etna's southeastern flank (2019)
    Details
    Publication Date: 2019-02-25
    Description: The southeastern flank of Etna volcano slides into the Ionian Sea at rates of centimeters per year. The prevailing understanding is that pressurization of the magmatic system, and not gravitational forces, controls flank movement, although this has also been proposed. So far, it has not been possible to separate between these processes, because no data on offshore deformation were available until we conducted the first long-term seafloor displacement monitoring campaign from April 2016 until July 2017. Unprecedented seafloor geodetic data reveal a 〉4-cm slip along the offshore extension of a fault related to flank kinematics during one 8-day-long event in May 2017, while displacement on land peaked at ~4 cm at the coast. As deformation increases away from the magmatic system, the bulk of Mount Etna's present continuous deformation must be driven by gravity while being further destabilized by magma dynamics. We cannot exclude flank movement to evolve into catastrophic collapse, implying that Etna's flank movement poses a much greater hazard than previously thought. The hazard of flank collapse might be underestimated at other coastal and ocean island volcanoes, where the dynamics of submerged flanks are unknown.
    Description: Published
    Description: eaat9700
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: JCR Journal
    Keywords: seafloor geodesy ; ground deformation ; volcano-tectonics ; fault ; 04.03. Geodesy ; 04.07. Tectonophysics ; 04.08. Volcanology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
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    The Submarine Boundaries of Mount Etna’s Unstable Southeastern Flank (2022)
    Frontiers Media S.A.
    Details
    Publication Date: 2022-03-07
    Description: Coastal and ocean island volcanoes are renowned for having unstable flanks. This can lead to flank deformation on a variety of temporal and spatial scales ranging from slow creep to catastrophic sector collapse. A large section of these unstable flanks is often below sea level, where information on the volcano-tectonic structure and ground deformation is limited. Consequently, kinematic models that attempt to explain measured ground deformation onshore associated with flank instability are poorly constrained in the offshore area. Here, we attempt to determine the locations and the morpho-tectonic structures of the boundaries of the submerged unstable southeastern flank of Mount Etna (Italy). The integration of new marine data (bathymetry, microbathymetry, offshore seismicity, reflection seismic lines) and published marine data (bathymetry, seafloor geodesy, reflection seismic lines) allows identifying the lineament north of Catania Canyon as the southern lateral boundary with a high level of confidence. The northern and the distal (seaward) boundaries are less clear because no microbathymetric or seafloor geodetic data are available. Hypotheses for their locations are presented. Geophysical imaging suggests that the offshore Timpe Fault System is a shallow second-order structure that likely results from extensional deformation within the moving flank. Evidence for active uplift and compression upslope of the amphitheater-shaped depression from seismic data along with subsidence of the onshore Giarre Wedge block observed in ground deformation data leads us to propose that this block is a rotational slump, which moves on top of the large-scale instability. The new shoreline-crossing structural assessment may now inform and improve kinematic models.
    Description: Published
    Description: 810790
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: JCR Journal
    Keywords: seafloor ; fault ; flank dynamics ; hydroacoustic ; geodesy ; seismic profiles ; 04.07. Tectonophysics ; 04.08. Volcanology ; 04.06. Seismology ; 04.02. Exploration geophysics ; 05.02. Data dissemination
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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