A recent study by the University of Victoria has revealed that the Tintina Fault in the Klondike region of Yukon has the potential to produce massive earthquakes, up to magnitude 7.5, which could impact nearby communities and critical infrastructure.
Researchers have found evidence of powerful earthquakes occurring over millions of years, but the exact timing and frequency of future events remain unknown. The study suggests that the ground beneath Yukon’s Klondike may be less stable than previously thought, posing a new hazard to local communities.
Dawson City is at risk due to its proximity to a section of the Tintina Fault that could produce large earthquakes, potentially damaging key roads and mining operations. A surface rupture along the fault could also trigger landslides in the Klondike, exacerbating existing geological instability.
The study, published in Geophysical Research Letters, used high-resolution topographic data gathered by satellites, planes, and drones to map the fault lines and identify areas of instability. Researchers have identified two ancient glacial landforms that show signs of past powerful surface-rupturing earthquakes.
While the study does not provide a formal hazard assessment, it confirms the Tintina Fault is active and poses significant seismic risk. The researchers emphasize the need for further studies to better understand the fault’s behavior and assess future earthquake potential.
Canada’s current earthquake risk maps do not fully reflect the hazards posed by the Tintina Fault, which should be further studied as part of potential updates to risk maps.
Source: https://www.yukon-news.com/news/tintina-fault-in-the-yukon-prone-to-large-quakes-study-reveals-8148570