Moreover,
Rapid mapping: when disasters upset:
Shortly after the Blatn disaster, Swisstopo specialists intervened by mapping the accident territory. Therefore, This “Rapid Mapping” performance aims to raise. Nevertheless, make geodoneds quickly in the event of natural phenomena, in order to document them, or even manage them. Meanwhile,
The mountainous relief, especially due to natural disasters, can evolve quickly. For example, In this case, these changes are documented at the topographic level, in particular thanks to the confederation “rapid mapping” service.
“We take care of the recording. However, the provision of geodoned in the event of natural events and disasters, as in the case of Blaten”, explains to RSI Francesco Wyss, specialist at the Federal Office of Topography Swisstopo.
Swisstopo specialists have a stake service. However, “We are therefore always reachable. Upon receipt of a request. we contact the Federal Office of the Environment in order to define the data recording methods, to determine which data to record, to what resolution and in what time. Finally, we exploit the different options at our disposal. We can record by plane, by satellite imaging or even by helicopter.”
However, it often happens that the work done once is not enough. “For example, in Blten, we recorded two images, and a third was scheduled for the end of the event. The event has since been closed ‘and will be recorded periodically, but more in the context of rapid mapping. The area has changed and will therefore continue to be monitored regularly”, but by other services.
It is a precious source of data. which, in addition to monitoring the area, is particularly useful for specialists for analysis and preparation for future events. “In rapid mapping: when disasters upset the future, Blatten’s case, for example, could be used to model and simulate landslides in other places.”
For Francesco Wyss, the biggest challenge for the future of the rapid mapping service is intervention without planning. “In 2024. three events occurred in the space of two weeks in Mesolcina, Valais and Vallemaggia, and the workload has suddenly become colossal. We cannot plan, you have to be ready. Each event has its own history. its own extent, its own tragedy, and we must be ready with all possible means. It will be the most difficult challenge in the future.”
Article original: RSI
French adaptation: Julien Furrer (RTS)
Rapid mapping: when disasters upset
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