Inform@Risk Documentation

User Tools

Site Tools

Trace:
en:risk_knowledge

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
en:risk_knowledge [2023/02/15 11:23] – t-breuningeren:risk_knowledge [2023/02/23 10:04] (current) – m-gamperl
Line 1: Line 1:
 ===== Risk Knowledge ===== ===== Risk Knowledge =====
-The risk assessment in the project partly follows the Swiss Risk Assessment Model. In the project three scenarios are distinguished: a scenario with a return period of up to **30 years** and a low intensity (smaller event, most likely to happen), a scenario with a return period of appr. **100 years** and a medium intensity (medium-sized event, less likely to happen) and a scenario with a return period of **300 years** or more and a high intensity (big event, very unlikely to happen). The first and second scenario are defined as high hazard, the third scenario is defined as residual hazard, since these events are very unlikely to occur. +The risk assessment we propose for the areas under investigation partly follows the Swiss Risk Assessment Model (BAFU 1998). In this section, we shortly summarise the steps we took in order to assess the hazard on site. For other sites, the steps will be slightly different, but we propose the main approach to be similar. 
-The following steps were taken to assess the probability and size of potential landslides and, therefore, the risk in all parts of the study area.+ 
 +In our pilot project in Medellín, three scenarios are distinguished: a scenario with a return period of up to **30 years** and a low intensity (smaller event, most likely to happen), a scenario with a return period of appr. **100 years** and a medium intensity (medium-sized event, less likely to happen) and a scenario with a return period of **300 years** or more and a high intensity (big event, very unlikely to happen). The first and second scenario are defined as high hazard, the third scenario is defined as residual hazard, since these events are very unlikely to occur. 
 +The following steps were taken to assess the probability and size of potential landslides and, therefore, the hazard in all parts of the study area.
  
 ==== Mapping of Past Events ==== ==== Mapping of Past Events ====
Line 30: Line 32:
 The parameters and values determined by the backmodelling were then used to model possible future landslides in Bello Oriente, including the possible runout of those events. The parameters and values determined by the backmodelling were then used to model possible future landslides in Bello Oriente, including the possible runout of those events.
  
-==== Risk Map ====+==== Hazard Map ====
 The results from the modelling in combination with the slope angle and the geology were visualized in a hazard map. The 30 year event hazard zone and the 100 year event hazard zone are depicted in the same color (red), since both are defined as high hazard. The residual hazard is depicted in yellow.\\ The results from the modelling in combination with the slope angle and the geology were visualized in a hazard map. The 30 year event hazard zone and the 100 year event hazard zone are depicted in the same color (red), since both are defined as high hazard. The residual hazard is depicted in yellow.\\
 Most steep areas above the inhabited zone down to the uppermost road of Bello Oriente are in the high hazard/high risk zone. The runout of a possible event could even reach the main road of the barrio.\\ Most steep areas above the inhabited zone down to the uppermost road of Bello Oriente are in the high hazard/high risk zone. The runout of a possible event could even reach the main road of the barrio.\\
 {{layout_hazardsynthesis_pm.jpg}} {{layout_hazardsynthesis_pm.jpg}}
en/risk_knowledge.txt · Last modified: 2023/02/23 10:04 by m-gamperl