Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Geohazard Interpretation of the Cagliari Slope (Southern Sardinia, Italy)
Geohazard assessment for offshore installations is a crucial engineering activity. The evaluation of Cagliari slope recognized significant geohazard features in the form of large slope failure scarps, as result of combined sea level fluctuation and salt movement. Fundamental to understanding the geohazard risk potential of these features is determining if scarp failure planes extend to the contemporary seabed or are buried by undisturbed sediment. Abnormally low sedimentation rates for the project area make this sedimentary geometry difficult to determine, with surficial units beyond the resolution of acoustic profiling systems. The solution applied was to evaluate the age of last movement and recurrence of slope failures by sampling deposits formed by multiple failure units and not the geometry of originating scarps themselves. On this basis, all studied slope failures are confirmed older than 10,000 years with return periods of the order 15,000 – 30,000 years.
Geohazard Interpretation of the Cagliari Slope (Southern Sardinia, Italy)
Geohazard assessment for offshore installations is a crucial engineering activity. The evaluation of Cagliari slope recognized significant geohazard features in the form of large slope failure scarps, as result of combined sea level fluctuation and salt movement. Fundamental to understanding the geohazard risk potential of these features is determining if scarp failure planes extend to the contemporary seabed or are buried by undisturbed sediment. Abnormally low sedimentation rates for the project area make this sedimentary geometry difficult to determine, with surficial units beyond the resolution of acoustic profiling systems. The solution applied was to evaluate the age of last movement and recurrence of slope failures by sampling deposits formed by multiple failure units and not the geometry of originating scarps themselves. On this basis, all studied slope failures are confirmed older than 10,000 years with return periods of the order 15,000 – 30,000 years.
Geohazard Interpretation of the Cagliari Slope (Southern Sardinia, Italy)
Johnson, William J. (Autor:in) / Zolezzi, Francesca (Autor:in) / Nicholls, James (Autor:in) / Parker, Eric J. (Autor:in) / Morgante, Ennio (Autor:in)
Georisk 2011 ; 2011 ; Atlanta, Georgia, United States
GeoRisk 2011 ; 820-828
21.06.2011
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Geohazard Interpretation of the Cagliari Slope (Southern Sardinia, Italy)
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