Development of the submarine channel in front of the Nidelva River, Trondheimsfjorden, Norway

L’Heureux, Jean-Sébastien; Hansen, L.F.; Longva, Oddvar

doi:10.1016/j.margeo.2009.01.005

Cited by 23 publications

(14 citation statements)

References 28 publications

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“…The Cenozoic evolution of the proximal margin of Espírito Santo was predominantly controlled by thin-skinned extension above Aptian evaporites (Davison, 2007;Fiduk et al, 2004;França et al, 2007). In contrast, salt structures were developed in the mid-slope region throughout the Cenozoic (Fiduk et al, 2004;Love et al, 2005).…”

Section: Geological Settingmentioning

confidence: 97%

“…In the study area, halokinesis accompanied the formation of north-striking canyons and channels associated with the Rio Doce Turbiditic System during the MioceneeHolocene (França et al, 2007;Love et al, 2005;Mohriak, 2003;Schreiner et al, 2009). Multiple phases of channel incision recorded on seismic data relate to Cenozoic regression episodes (Alves et al, 2009;Fiduk et al, 2004), which also caused important mass-wasting on the slope (Alves, 2010;Gamboa et al, 2011Gamboa et al, , 2010.…”

Section: Geological Settingmentioning

confidence: 99%

“…Despite these known concepts and the common presence of submarine confluences identified in various continental margins (e.g. Canals et al, 2000;Dalla Valle and Gamberi, 2011;Greene et al, 2002;L'Heureux et al, 2009;Mitchell, 2004;Paquet et al, 2010;Pirmez et al, 2000;Schwab et al, 2007;Straub et al, 2011;TuJino and Murakami, 2006), the geometry and processes of submarine confluences is still poorly understood when compared to their sub-aerial counterparts, and classification schemes have not been yet established. Detailed geomorphic analysis of channel segments in submarine confluence regions are still incomplete and published studies are focused on single time intervals, usually the modern seafloor.…”

Section: Introductionmentioning

confidence: 99%

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A submarine channel confluence classification for topographically confined slopes

Gamboa

Alves

Cartwright

2012

Marine and Petroleum Geology

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Section: Geological Settingmentioning

confidence: 97%

Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A submarine channel confluence classification for topographically confined slopes

Gamboa

Alves

Cartwright

2012

Marine and Petroleum Geology

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“…Such high-resolution surveys have become a standard in seafloor research and their widespread use in combination with other methods-including imaging of the sediment subsurface and sampling-has contributed to an improved understanding of seafloor processes in many areas, ranging from volcanic and hydrothermal activity to glacial landforms, delta sedimentation and mass movements (e.g. Fornari et al 1988;McAdoo et al 2000;Laberg et al 2007;Ottesen et al 2008;L'Heureux et al 2009; among many others). While these tools have been developed and become standard in the marine environment, their application in lacustrine environments, using portable systems, slowly started only during the past few years, with first case studies in the United States (Lake Tahoe, Crater Lake;Gardner et al 2000;Bacon et al 2002) and recently also in perialpine lakes in Italy and France (Bini et al 2007;Fanetti et al 2008;Ledoux et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Subaqueous morphology of Lake Lucerne (Central Switzerland): implications for mass movements and glacial history

et al. 2011

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Bathymetric data available for Swiss lakes have typically only low to moderate resolution and variable quality, making them insufficient for detailed underwater geomorphological studies. This article presents results of a new bathymetric survey in perialpine Lake Lucerne using modern hydrographic equipment. A digital terrain model (DTM) of the lake floor (raster dataset with 1 m cell size) covering the Chrüztrichter and Vitznau basins documents signatures of major Holocene mass movements and relics from the glacial history of the lake. Combining the bathymetry data with reflection seismic profiles and an existing event chronology allows investigating the morphology in its geological context. Subaqueous sediment slide scars with sharp headwalls cover large areas on moderately inclined slopes. The particularly large Weggis slide complex, correlated with an historical earthquake (AD 1601), features a *9 km long and 4-7 m high headwall and covers an area of several square kilometers. Large debris cones of prehistoric rockfalls and the deposits of recent rockfall events imaged on the almost flat basin plain document mass-movement activity on steep slopes above the lake. Six transverse moraines, visible as subaqueous ridges, as lake-floor lineaments, or only imaged on reflection seismic profiles, indicate a complex glacial-inherited morphology. As many of the documented features result from potentially catastrophic events, high-resolution bathymetry can significantly improve natural hazard assessment for lakeshore communities by extending classical hazard maps to the subaqueous domain.

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“…This includes the information on depositional products as well as the behaviour and causal relationships between sedimentary processes. Such information is especially crucial for the understanding of hazardous events in the basins (e.g., Bøe et al, 2003;Longva et al, 2003;Blikra et al, 2006;L'Heureux et al, 2009L'Heureux et al, , 2012Ledoux et al, 2010;Hilbe et al, 2011Hilbe et al, , 2014Van Daele et al, 2013;Haeussler et al, 2014;Kremer et al, 2015;Wiemer et al, 2015). In Figure 1 this context, the linkage of offshore-onshore datasets is crucial as it provides clues to the many processes that occur in both environments (e.g., Bozzano et al, 2009;Couchon-Voyer et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Morphological signatures of mass wasting and delta processes in a fjord-lake system: insights from Lovatnet, western Norway

Hansen¹,

Waldmann²,

Storms³

et al. 2016

NJG

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High-resolution bathymetrical data from the Lovatnet lake, western Norway, reveal a diverse morphology including traces from historic and prehistoric landslides. Onshore LiDAR and selected seismic profiles support the interpretation. Our data from the lake show significant debris lobes below Ramnefjellet that was the source of the well-known rock avalanche and tsunami disasters in 1905 and 1936 which caused a total of 134 casualties. The debris is divided into three main lobes reaching a total length of 1.8 km along the lake bottom from the impact site, and diffuse lobe features below the Bødalsdelta. Frontal deformations are minor. Lobes on the basin plain have a volume of more than 1.2 × 10 6 m 3 including debris entrained from the surrounding slopes and lake floor. The entire lake volume was set in motion during the catastrophic events. Returning bottom flows transported debris into the lake where lobes and minor, distinct mounds were deposited up to c. 1.5 km from the lake's outlet. The mounds could be anthropogenic, and possibly include a vessel that disappeared during the event. Erosion and smaller failures occurred elsewhere in the lake basin. Fan-delta morphologies are varied, with ridges and protuberances, reflecting deltaic sedimentation interrupted by major mass-wasting or other events in the deltas and/or their catchments. This is especially clear for the Raudi, Hellsete and Bødalen deltas, but minor protuberances are also found in other deltas. The data also reveal traces from large and previously undocumented landslide events. Gravitational deposits generally dominate the steep slopes and glacial landforms are scarce. The study demonstrates the importance of linking onshore and offshore morphological datasets in order to obtain an overview over process variability in fjord-type lakes of importance for further investigation and hazard assessment.

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Development of the submarine channel in front of the Nidelva River, Trondheimsfjorden, Norway

Cited by 23 publications

References 28 publications

A submarine channel confluence classification for topographically confined slopes

A submarine channel confluence classification for topographically confined slopes

Subaqueous morphology of Lake Lucerne (Central Switzerland): implications for mass movements and glacial history

Morphological signatures of mass wasting and delta processes in a fjord-lake system: insights from Lovatnet, western Norway

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