- Geomorphic Features Revealed by the Acquisition, Processing and Interpretation of HIgh-Resolution Seismic Reflection Profiles across a Large Debris-Flow Fan (Vinschgau/Val Venosta, Italian Alps)
- Maraio, Stefano <1985>
Subject
- GEO/11 Geofisica applicata
Description
- Researches concerning the Quaternary sedimentary dynamics in the European Alps have become of increasing interest in the late decades, producing a large volume of literature. This thesis uses high-resolution seismic reflection data and seismic stratigraphic methods to examine the formation and evolution of a major alluvial/glacial fan in the eastern Italian Alps. Alluvial fan environments, often pose significant challenges for high-resolution seismic exploration, due to high heterogeneity of deposits and rugged topography. Using both non-conventional field (dense wide aperture array) and processing techniques (Common Reflection Surface stack), we were able to obtain high-quality seismic reflection and refraction images across a representative transect of Venosta Valley. By using stratigraphic, geophysical and morphologic data this work characterizes the fan and valley deposits and their evolution throughout post-glacial times. Using this information, we model the evolution of the valley fill in the framework of post-glacial climate fluctuations. The results provide an understanding of the landscape geomorphic evolution in response to the main climatic changes and also can represent a tool in policy decision regarding natural hazards.
Date
- 2016-04-15
Type
- Doctoral Thesis
- PeerReviewed
Format
- application/pdf
Identifier
urn:nbn:it:unibo-18490
Maraio, Stefano (2016) Geomorphic Features Revealed by the Acquisition, Processing and Interpretation of HIgh-Resolution Seismic Reflection Profiles across a Large Debris-Flow Fan (Vinschgau/Val Venosta, Italian Alps), [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in Scienze della terra