Benjamin Bellwald
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View article: Stad Slide: Preconditioning and failure of one of the world's largest megaslides
Stad Slide: Preconditioning and failure of one of the world's largest megaslides Open
Submarine landslides can generate tsunamis and pose risks to underwater infrastructure, but a lack of direct observations of such slides hinders our understanding of their development and hazard potential. Studying the morphology of past s…
View article: Marine Geohazards and Geo-Engineering Constraints on the Glaciated European Margins
Marine Geohazards and Geo-Engineering Constraints on the Glaciated European Margins Open
The glaciated European continental margins (spanning 49-82°N and 16°W-36°E) are home to a thriving offshore energy sector and densely inhabited coastal areas. These regions face numerous marine geohazards and geo-engineering challenges due…
View article: Major tunnel valleys and sedimentation changes document extensive Early Pleistocene glaciations of the Barents Sea
Major tunnel valleys and sedimentation changes document extensive Early Pleistocene glaciations of the Barents Sea Open
Sedimentary records of Early Pleistocene (~2.6–0.8 Ma) glaciations are sparse on shelves, yet trough mouth fans on adjacent continental slopes provide a continuous record of ice-sheet and climate development throughout the Quaternary. Here…
View article: Sedimentation record of a complete glacial-interglacial cycle: Down-slope deposits, contourites and plumites of the North Sea trough mouth fan
Sedimentation record of a complete glacial-interglacial cycle: Down-slope deposits, contourites and plumites of the North Sea trough mouth fan Open
Trough mouth fans (TMFs) are major submarine depocentres that form in front of ice streams advancing onto the continental shelf, and they provide extensive records of past glaciations and ice-sheet dynamics. However, early research about T…
View article: Feather-like submarine channels: a unique imprint of overbank flows imaged by 3D seismic data
Feather-like submarine channels: a unique imprint of overbank flows imaged by 3D seismic data Open
We document for the first time the extensive occurrence of “feather-like channels” in the 19000-year-old glacigenic submarine strata in the North Sea Fan (NSF). We describe these features in the uppermost deposits of the NSF, p…
View article: Glacial seismic geomorphology offshore northwest Europe
Glacial seismic geomorphology offshore northwest Europe Open
Plio-Pleistocene records of ice-rafted detritus suggest that northwest European ice sheets regularly advanced across palaeo-coastlines. However, while these records are important, they provide only a limited insight on the frequency, exten…
View article: Glacial seismic geomorphology and Plio-Pleistocene ice sheet history offshore NW Europe
Glacial seismic geomorphology and Plio-Pleistocene ice sheet history offshore NW Europe Open
Plio-Pleistocene records of ice-rafted detritus suggest NW European ice sheets regularly reached coastlines. However, these records provide limited insight on the frequency, extent and dynamics of ice sheets delivering the detritus. Three-…
View article: The stratigraphy of a glacial cycle: a study case of the Weichselian deposits of the North Sea Fan
The stratigraphy of a glacial cycle: a study case of the Weichselian deposits of the North Sea Fan Open
To understand the dynamics of the Fennoscandian Ice Sheet, extensive studies have been done on the Norwegian Channel which was formed by intense ice streaming activity throughout the Quaternary. However, the understanding of trough mouth f…
View article: DBF file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations
DBF file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations Open
The outlines of the craters as a shapefile (DBF file).
View article: CPG file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations
CPG file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations Open
The outlines of the craters as a shapefile (CPG file).
View article: Rapid loading and deformation of soft sediments during emplacement of a Lava Delta in the Vøring Basin, Mid-Norwegian Margin
Rapid loading and deformation of soft sediments during emplacement of a Lava Delta in the Vøring Basin, Mid-Norwegian Margin Open
Egg-box dimension measurements.
View article: SHX file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations
SHX file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations Open
The outlines of the craters as a shapefile (SHX file).
View article: SHP file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations
SHP file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations Open
The outlines of the craters as a shapefile (SHP file).
View article: PRJ file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations
PRJ file: Rapid glacial sedimentation and overpressure in oozes causing large craters on the mid-Norwegian margin: integrated interpretation of the Naust, Kai and Brygge formations Open
The outlines of the craters as a shapefile (PRJ file).
View article: Quaternary and Neogene Reservoirs of the Norwegian Continental Shelf and the Faroe-Shetland Basin
Quaternary and Neogene Reservoirs of the Norwegian Continental Shelf and the Faroe-Shetland Basin Open
Glaciogenic reservoirs host important hydrocarbon resources across the globe. Examples such as the Peon and Aviat discoveries in the North Sea show that Quaternary and Neogene reservoirs can be prospective in the region. In this study, we …
View article: Mixed sedimentation of the North Sea Fan – insights on volumes of contourites, plumites and downslope deposits during a full glacial-interglacial cycle
Mixed sedimentation of the North Sea Fan – insights on volumes of contourites, plumites and downslope deposits during a full glacial-interglacial cycle Open
<p>Trough mouth fans are important depocenters for glacial sedimentation in high latitude margins, recording sedimentological processes and their relationship with paleoclimatic fluctuations on short timescales - from decades to mill…
View article: A Source to Sink Approach to the North Sea Fan Pleistocene Glacial Sediments
A Source to Sink Approach to the North Sea Fan Pleistocene Glacial Sediments Open
<p>Trough mouth fans are large depocentres forming the ultimate sinks in glacial source-to-sink systems. Their architecture, sedimentological aspects (origin and processes) and their role as paleoclimatic archives are essential compo…
View article: Characterization of a glacial paleo-outburst flood using high-resolution 3-D seismic data: Bjørnelva River Valley, SW Barents Sea
Characterization of a glacial paleo-outburst flood using high-resolution 3-D seismic data: Bjørnelva River Valley, SW Barents Sea Open
Proglacial braided river systems discharge large volumes of meltwater from ice sheets and transport coarse-grained sediments from the glaciated areas to the oceans. Here, we test the hypothesis if high-energy hydrological events can leave …
View article: Does Retrogression Always Account for the Large Volume of Submarine Megaslides? Evidence to the Contrary From the Tampen Slide, Offshore Norway
Does Retrogression Always Account for the Large Volume of Submarine Megaslides? Evidence to the Contrary From the Tampen Slide, Offshore Norway Open
Submarine landslides can be several orders of magnitude larger than their terrestrial counterparts and can pose significant hazards across entire ocean basins. The landslide failure mechanism strongly controls the associated tsunami hazard…
View article: Meltwater sediment transport as the dominating process in mid-latitude trough mouth fan formation
Meltwater sediment transport as the dominating process in mid-latitude trough mouth fan formation Open
Trough mouth fans comprise the largest sediment deposits along glaciated margins, and record Pleistocene climate changes on a multi-decadal time scale. Here we present a model for the formation of the North Sea Fan derived from detailed ho…
View article: Extensive, Gas-charged Quaternary Sand Accumulations of the Northern North Sea and North Sea Fan
Extensive, Gas-charged Quaternary Sand Accumulations of the Northern North Sea and North Sea Fan Open
<p>Sediments deposited by marine-based ice sheets are dominantly fine-grained glacial muds, which are commonly known for their sealing properties for migrating fluids. However, the Peon and Aviat hydrocarbon discoveries in the North …