TY - GEN
T1 - Shallow landslides and their dynamics in coastal and deepwater environments, Norway
AU - Vanneste, Maarten
AU - L'Heureux, Jean Sebastien
AU - Baeten, Nicole
AU - Brendryen, Jo
AU - Vardy, Mark E.
AU - Steiner, Alois
AU - Forsberg, Carl Fredrik
AU - Kvalstad, Tore J.
AU - Laberg, Jan Sverre
AU - Chand, Shyam
AU - Longva, Oddvar
AU - Rise, Leif
AU - Haflidason, Haflidi
AU - Hjelstuen, Berit O.
AU - Forwick, Matthias
AU - Morgan, Eugene
AU - Lecomte, Isabelle
AU - Kopf, Achim
AU - Vorren, Tore O.
AU - Reichel, Thomas
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - In this manuscript, we present the first results of integrated slope stability studies to investigate smaller-scale mass movement processes in different physiographic settings of Norway. These include coastal areas (Sørfjord, Finneidfjord), and pristine open ocean settings in intermediate (Vesterålen) and deep waters (Lofoten) on the Norwegian margin. Triggers, pre-conditioning factors and sedimentary processes associated with these landslides are currently not well constrained. The landslides occur either in clusters or isolated, and have variable geomorpho- logic expressions and run-out. These smaller landslides appear to be comparatively recent phenomena. However, failures likely happened repeatedly and recurrence may affect coastal communities or jeopardize offshore installations. New data indicate that the landslides developed within thin, gently-dipping sediment units that served as slip planes. Some soil samples from these units may show strain-softening behaviour, higher plasticity and higher sensitivity compared to other units. The slide-prone layers in Sørfjord can furthermore be related to specific depositional processes. Shallow gas - Although clearly present in Sørfjord - is not considered a key factor.
AB - In this manuscript, we present the first results of integrated slope stability studies to investigate smaller-scale mass movement processes in different physiographic settings of Norway. These include coastal areas (Sørfjord, Finneidfjord), and pristine open ocean settings in intermediate (Vesterålen) and deep waters (Lofoten) on the Norwegian margin. Triggers, pre-conditioning factors and sedimentary processes associated with these landslides are currently not well constrained. The landslides occur either in clusters or isolated, and have variable geomorpho- logic expressions and run-out. These smaller landslides appear to be comparatively recent phenomena. However, failures likely happened repeatedly and recurrence may affect coastal communities or jeopardize offshore installations. New data indicate that the landslides developed within thin, gently-dipping sediment units that served as slip planes. Some soil samples from these units may show strain-softening behaviour, higher plasticity and higher sensitivity compared to other units. The slide-prone layers in Sørfjord can furthermore be related to specific depositional processes. Shallow gas - Although clearly present in Sørfjord - is not considered a key factor.
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U2 - 10.1007/978-94-007-2162-3_3
DO - 10.1007/978-94-007-2162-3_3
M3 - Conference contribution
AN - SCOPUS:84904120281
SN - 9789400721616
T3 - Submarine Mass Movements and Their Consequences - 5th International Symposium
SP - 29
EP - 41
BT - Submarine Mass Movements and Their Consequences - 5th International Symposium
PB - Kluwer Academic Publishers
T2 - 5th International Symposium on Submarine Mass Movements and Their Consequences
Y2 - 24 October 2011 through 26 October 2011
ER -