Palaeoslides and other mass failures of Pliocene to Pleistocene age along the Atlantic continental margin of NW Europe

Evans, D.; Harrison, Z.; Shannon, Patrick M.; Laberg, Jan Sverre; Nielsen, Tove; Ayers, Shaun M.; Holmes, R.; Hoult, R.J.; Lindberg, Bjørn; Haflidason, Haflidi; Long, David A.; Kuijpers, Antoon; Andersen, Espen; Bryn, Petter

doi:10.1016/j.marpetgeo.2005.01.010

Cited by 89 publications

(63 citation statements)

References 60 publications

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“…1). Large failures have been recently studied in the Rockall Trough (Øvrebø et al 2005), Porcupine Bight (Huvenne et al 2002), and elsewhere along the continental slope (Evans et al 2005), many of which may be tsunamigenic, although dating is lacking for most.…”

Section: Discussionmentioning

confidence: 99%

Catastrophic Wave Erosion, Bristol Channel, United Kingdom: Impact of Tsunami?

Bryant¹,

Haslett²

2007

The Journal of Geology

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On January 30, 1607, a massive wave from the ocean surged up Bristol Channel in the United Kingdom, flooding more than 500 km2 of lowland along 570 km of coast. It killed 2000 people and is considered Britain's worst natural disaster on land. The wave occurred on a fine day and surprised inhabitants. Contemporary descriptions of the event have many of the characteristics of accounts of recent catastrophic tsunamis. Geomorphic evidence for tsunamis in the channel can be found in the form of transported and imbricated boulders, bedrock sculpturing on coastal platforms and ramps, and, at isolated locations, wholesale erosion of the coastal landscape. Hydrodynamic calculation of the height of the tsunami and flow velocities can be derived from boulder dimensions. Tsunami wave height increased from 4 m in the outer Bristol Channel to more than 6 m within the inner Severn Estuary. Theorized flow velocities range between 11.8 and 18.1 m s1, increasing up the estuary. Under topographic enhancement, these depths and velocities may be sufficient to generate bedrock sculpturing, which is indeed observed at a few locations on rocky headlands in the channel. Interpolation of the amount of cliff retreat at Dunraven Bay indicates that an imbricated boulder train was deposited by tsunami sometime between 1590 AD and 1672 AD, a time span that encompasses the January 30, 1607, event. A B S T R A C TOn January 30, 1607, a massive wave from the ocean surged up Bristol Channel in the United Kingdom, flooding more than 500 km 2 of lowland along 570 km of coast. It killed 2000 people and is considered Britain's worst natural disaster on land. The wave occurred on a fine day and surprised inhabitants. Contemporary descriptions of the event have many of the characteristics of accounts of recent catastrophic tsunamis. Geomorphic evidence for tsunamis in the channel can be found in the form of transported and imbricated boulders, bedrock sculpturing on coastal platforms and ramps, and, at isolated locations, wholesale erosion of the coastal landscape. Hydrodynamic calculation of the height of the tsunami and flow velocities can be derived from boulder dimensions. Tsunami wave height increased from 4 m in the outer Bristol Channel to more than 6 m within the inner Severn Estuary. Theorized flow velocities range between 11.8 and 18.1 m s Ϫ1

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Section: Discussionmentioning

confidence: 99%

Catastrophic Wave Erosion, Bristol Channel, United Kingdom: Impact of Tsunami?

Bryant¹,

Haslett²

2007

The Journal of Geology

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“…Instability of these prograding Pliocene and younger clastic wedges has given rise to the development of several, presumably earthquake-triggered large submarine slide during Late Pleistocene and Holocene times that partly were associated with major tsunamis ( Fig. 61; Bondevik et al, 2005;Evans et al, 2005).…”

Section: Climate Controls On Topographymentioning

confidence: 99%

TOPO-EUROPE: The geoscience of coupled deep Earth-surface processes

Cloetingh¹,

Ziegler²,

Bogaard³

et al. 2007

Global and Planetary Change

140

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TOPO-EUROPE addresses the 4-D topographic evolution of the orogens and intra-plate regions of Europe through a multidisciplinary approach linking geology, geophysics, geodesy and geotechnology. TOPO-EUROPE integrates monitoring, imaging, reconstruction and modelling of the interplay between processes controlling continental topography and related natural hazards. Until now, research on neotectonics and related topography development of orogens and intra-plate regions has received little attention. TOPO-EUROPE initiates a number of novel studies on the quantification of rates of vertical motions, related tectonically controlled river evolution and land subsidence in carefully selected natural laboratories in Europe. From orogen through platform to continental margin, these natural laboratories include the Alps/Carpathians-Pannonian Basin System, the West and Central European Platform, the Apennines-Aegean-Anatolian region, the Iberian Peninsula, the Scandinavian Continental Margin, the East-European Platform, and the Caucasus-Levant area. TOPO-EUROPE integrates European research facilities and know-how essential to advance the understanding of the role of topography in Environmental Earth System Dynamics. The principal objective of the network is twofold. Namely, to integrate national research programs into a common European network and, furthermore, to integrate activities among TOPO-EUROPE institutes and participants. Key objectives are to provide an interdisciplinary forum to share knowledge and information in the field of the neotectonic and topographic evolution of Europe, to

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“…The best candidates are the multi-staged Storegga Slide, about 100 km southwest of the Sula Ridge, and the Traenadjupet Slide. The last phase in the Storegga Slide complex occurred between 7.3 and 8.1 ka BP , while the Traenadjupet Slide has been dated at 4.0 ka BP (Evans et al 2005;Laberg et al 2000Laberg et al , 2002. The dating results of the corals indicate that the initial coral reef complex was already in place when the last Storegga sliding phase occurred.…”

Section: Discussionmentioning

confidence: 90%

Cold-water coral banks and submarine landslides: a review

Mol

Huvenne

Canals

2008

Int J Earth Sci (Geol Rundsch)

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This paper aims to review the relation between cold-water coral bank development and submarine landslides. Both are common features on continental margins, but so far it has not been reviewed which effect-if at allthey may have upon each other. Indirect and direct relations between coral banks and landslides are evaluated here, based on four case studies: the Magellan Mound Province in the Porcupine Seabight, where fossil coral banks appear partly on top of a buried slide deposit; the Sula Ridge Reef Complex and the Storegga landslide both off mid-Norway; and the Mauritania coral bank province, associated with the Mauritanian Slide Complex. For each of these locations, positive and negative relationships between both features are discussed, based on available datasets. Locally submarine landslides might directly favour coral bank development by creating substratum where corals can settle on, enhancing turbulence due to abrupt seabed morphological variations and, in some cases, causing fluid seepage. In turn, some of these processes may contribute to increased food availability and lower sedimentation rates. Landslides can also affect coral bank development by direct erosion of the coral banks, and by the instantaneous increase of turbidity, which may smother the corals. On the other hand, coral banks might have a stabilising function and delay or stop the headwall retrogradation of submarine landslides. Although local relationships can be deduced from these case studies, no general and direct relationship exists between submarine landslides and cold-water coral banks.

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Palaeoslides and other mass failures of Pliocene to Pleistocene age along the Atlantic continental margin of NW Europe

Cited by 89 publications

References 60 publications

Catastrophic Wave Erosion, Bristol Channel, United Kingdom: Impact of Tsunami?

Catastrophic Wave Erosion, Bristol Channel, United Kingdom: Impact of Tsunami?

TOPO-EUROPE: The geoscience of coupled deep Earth-surface processes

Cold-water coral banks and submarine landslides: a review

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