New Technique Can Quickly Locate Landslide Sites Using Seismic Data
Local people searching the site of a landslide in Yambali, Papua New Guinea, in 2024
Xinhua/Alamy
When a dangerous landslide strikes, every second counts for rescuers rushing to the scene. Thanks to a new technique that utilizes seismic data, pinpointing the exact location of the disaster within a few kilometers in a matter of seconds is now possible.
According to Stefania Ursica from the Helmholtz Centre for Geosciences in Germany, existing methods fall short in providing precise locations, often leading to delays in rescue operations. Ursica highlighted the critical importance of time in such situations during a press conference at the European Geosciences Union meeting in Vienna.
Seismic monitors, typically used to track earthquake and volcanic activity, can also detect landslides. However, analyzing data from landslides is more challenging due to its complexity and noise levels, especially in remote areas where such events are common and satellite data may be limited.
Ursica’s team introduced a novel approach that involves analyzing multiple aspects of the seismic waveform to identify the exact timing of the event. This information is then processed by mathematical agents that iteratively search for the event’s location by comparing expected waveforms with recorded data.
These agents, inspired by animal behaviors like falcon spirals and elephant migrations, collectively converge on the most probable location within about 10 seconds, a significant improvement in accuracy compared to traditional methods. Ursica emphasized the potential of this technique not only in rescue missions but also in enhancing event detection in remote areas with limited data availability.
The team is preparing to publish detailed findings and intends to share the code for wider utilization by researchers and emergency response teams.
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