A recent earthquake in San José del Palmar, Colombia, caused limited damage because the seismic event occurred at a greater depth [1], [2].
This distinction is critical for urban planning and disaster response. While the magnitude was similar to a recent earthquake in Venezuela, the depth of the Colombian event reduced the intensity of surface shaking, a factor that prevented more widespread destruction [1], [3].
Viviana Dionisio, a seismologist with the National Seismological Network of Colombia, is among the experts analyzing the event [1], [4]. Researchers are focusing on how the seismic forces affected critical infrastructure, including hospitals, airports, bridges, and buildings [4].
Seismologists said that the Colombian quake was not related to the recent activity in Venezuela despite the similar magnitudes [1]. The depth of an earthquake acts as a buffer; the further the epicenter is from the surface, the more energy dissipates before it reaches human settlements [2], [3].
Scientists are now using this event to study the resilience of the region's structural engineering. By evaluating the forces placed on essential buildings, they aim to better understand how infrastructure in San José del Palmar and surrounding areas would withstand a shallower quake of the same magnitude [4].
“The depth of the Colombian event reduced the intensity of surface shaking.”
This event highlights the difference between earthquake magnitude and intensity. While magnitude measures the energy released at the source, the actual impact on the surface is heavily dictated by depth and soil composition. For Colombia, the study of this specific event provides a baseline for stress-testing critical infrastructure against future, potentially shallower seismic events that could be more catastrophic.
