21 Mar 2021 The area lies at an altitude of about 90 m.a.s.l. The 2020 Gjerdrum landslide was a quick clay landslide that occurred in the early hours of 30

extent of quick clay is of great interest for planning and protection purposes, as the position of quick clay within slopes has a major impact on the landslide risk.

Quick clay has a remolded strength which is much less than its strength upon initial loading. The deadliest quick clay landslide in Norway’s history occurred on May 19, 1893, in Verdal, Trøndelag county. Heavy rainfall throughout the winter and spring floods on the Helgåa river turned the clay into a soup. The landslide occurred in increments with the first temporarily damming the river up to a height of 10 meters. On the 29th of April 1978, a quick clay landslide devastated large areas of the rural district of Rissa I mid-Norway.

Quick clay. Quick clay. River. Natural triggers. • River erosion. • Rainfall. • Earthquake.

Geophysical assessment and geotechnical investigation of quick‐clay landslides–a Swedish case study. A Malehmir, M Bastani, CM Krawczyk, M Gurk, N Ismail,

Unique pictures and film were taken during an actual quick clay slide, and one can see dwellings and farm houses float along the clay "river" before being demolished by … 2011-03-22 Quick Clay Landslides. Quick clay may depart from its stable state due to multiple triggering factors (overloading, erosion, rainfalls, slope undercutting, earthquakes etc). The phenomenon has been the main cause of numerous massive landslides that have occurred throughout the history (more than 250 recorded in Canada). 2021-01-14 2021-01-02 We study the rheology of quick clay, an unstable soil responsible for many landslides.

2019-11-12

Quick clay landslides have caused severe impacts on human civilization mostly due to their large size and the absence of an alert mechanism. To find out more about the properties of quick clays, click here. 2016-11-11 · An impressive quick clay landslide occurred in St-Luc-de-Vincennes, Quebec, Canada on November 10, 2016. Several homes were evacuated, although, luckily, no injuries were reported.

The May 2010 Times article explained that because the unstable clay formed in salt water the molecular structure of its particles is unstable (compared with clays formed as layers in fresh water). Quick-clay landslides are common geohazards in Nordic countries and Canada. The presence of potential quick clays is confirmed using geotechnical investigations, but near-surface geophysical methods, such as seismic and resistivity surveys, can also help identify coarse-grained materials associated with the development of quick clays. Quick clay landslides can occur in flat areas below the marine boundary where quick clay occurs. The landslide can develop quickly where the solid quick clay converts into liquid mass.
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The quick clay landslide created a ravine in the village of Ask. Credits: Forbes/NTB/AFP VIA GETTY IMAGES A massive quick clay landslide struck in a Norwegian village sweeping away buildings. The landslide occurred in the village of Ask, located in the municipality of Gjerdurm on December 30, 2020. We study the rheology of quick clay, an unstable soil responsible for many landslides. We show that above a critical stress the material starts flowing abruptly with a very large viscosity decrease Rescuers responded on Thursday, December 30, 2020 to a quick clay landslide in the Village of Ask within Gjerdum municipality in Norway. At least two persons were killed in the landslide.

Other quick-clay areas are located far from river and stream banks (where many slides start), but these could still be hazardous if the slopes are steepened or 2019-11-12 · On the 29th of April 1978, a quick clay landslide devastated large areas of the rural district of Rissa I mid-Norway.
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The presence of the sensitive clays in Scandinavia and Canada creates quick clay landslide hazards. The ability to predict the likelihood of such landslides

According to Toril Hofshagen, the regional head of the Norwegian Water Resources and Energy Directorate, the landslide is one of the largest quick clay failures that has occurred in Norway's recent history. The Quick clay landslide in Rissa, Sør-Trøndelag in 1978, is the largest in volume that has hit Norway after 1900.

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The quick-clay landslide in Verdal, where a total of 116 people perished in 1893, is also well documented (e.g. Walberg 1993). Following the famous Rissa landslide in mid Norway (Gregersen 1981, L’Heureux et al. 2012), a nationwide quick-clay mapping program was started in order to delimitate areas susceptible to large quick-clay landslides.

In. Sennestet, K., Flaate, K., Larse, J.O. (eds), Landslides and Avalanches, ICFL 2005. extent of quick clay is of great interest for planning and protection purposes, as the position of quick clay within slopes has a major impact on the landslide risk. extent of quick clay is of great interest for planning and protection purposes, as the position of quick clay within slopes has a major impact on the landslide risk.

30 Nov 2012 2. Description of test cases. 9. 2.1 Essential facts about quick clay and quick-clay slides. 9. 2.2 The 1978 Rissa landslide, Sør-Trøndelag county.

… Quick clay landslides are of two main types – stepwise and uninterrupted. In stepwise landslides, sufficient failed material liquefies that the debris from each step flows away from the slide scarp, leaving an unsupported unstable slope that, in turn, fails and flows away. 2016-11-11 A massive quick clay landslide struck in a Norwegian village sweeping away buildings. The landslide occurred in the village of Ask, located in the municipality of Gjerdurm on December 30, 2020. According to Toril Hofshagen, the regional head of the Norwegian Water Resources and Energy Directorate, the landslide is one of the largest quick clay failures that has occurred in Norway's recent history. The Quick clay landslide in Rissa, Sør-Trøndelag in 1978, is the largest in volume that has hit Norway after 1900. Over 20 houses and farms were taken of the 2000-09-01 2012-09-01 2021-02-25 2021-01-05 2011-09-15 2009-03-13 Leda Clay, Quick Clay, & Landslides or Sinkholes in Quebec & Eastern Ontario, Canada, documents the history of unstable clay soil landslides or sink hole formation in Canada, Norway, and other locations.