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The core of ecorisQ is made of its members. By joining ecorisQ you will expand your professional network and profit from transparent tools in the field of natural hazard risks. Being an ecorisQ member demonstrates that you are willing to increase the transparancy and reproducibility of natural hazard analyses and that you promote sustainable protection against natural hazards.  

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Extending over more than 113,000 hectares, the Thomas fire, burning in December 2017, stripped away vegetation and altered the condition of the soil.  By removing the above-ground canopy of plants and decreasing water infiltration rates, the fire decreased rainfall thresholds necessary to mobilize large volumes of sediment. Even though the fire was not completely extinguished before the onset of winter rains on 8-9 January, 2018, thousands of people were under evacuation orders as the rainfall fell on vulnerable watersheds.  Measured rain intensities were as high as 144 mm/hr. The resulting debris flows and floods (see illustrative videos here) transported ash, mud, boulders, and trees, over 5 m deep at speeds of 20 km/hr through alluvial fans at the base of the mountains, killing at least 20 people and damaging hundreds of homes, vehicles, and infrastructureThe U.S. Geological Survey assessed the burned areas to determine flash flood, mudslide and debris flow hazards. The comparison of images before and after the events published by the BBC are impressive

 

A few weeks after cyclone Fehi, another ex-tropical cyclone (Gita) has battered many of the same
parts of New Zealand causing flooding, landslides, damage to roads and stranding tourists in many
popular holiday spots.

 

Due to the combination of excessive snowfall, subsequent snowmelt and intense, continuous rainfall (> 160 mm in 48 hrs), many regions in the French and Swiss Alps were affected by shallow landslides, debris flows and flooding between the 30th of December 2017 and the 5th of January 2018. In France, 2 persons were killed in their homes due to the natural hazards and multiple roads were closed (see examples from Switzerland here).