World Cup Frenzy Triggers False Seismic Alarm: The Debate Over the Definition of "Artificial Earthquakes"

Immediately after Mexico’s victory over Ecuador during the 2026 World Cup, the ground actually shook. According to Wired, Mexico’s digital early warning and integrated risk management platform (SASSLA) reported that the fans’ frenzy caused “significant artificial signals.” These vibrations were recorded by Raspberry Shake seismometers installed near Mexico City Stadium.

The excitement sparked by goals from Julián Quiñones and Raúl Jiménez definitively triggered the sensors in the seismic alert system. SASSLA explained on social media that “the explosion of joy and mass cheering created localized vibrations.”

Similar Phenomena Observed in the Past

Similar phenomena have been observed before. During the Mexico versus Germany match in the 2018 Russia World Cup, Mexico’s Institute of Geological and Atmospheric Research detected seismically artificial signals potentially caused by collective fan jumping after Hirving Lozano’s decisive goal.

Notably, such phenomena can occur even thousands of kilometers away from the event venue. During last week’s knockout round, when Norway scored a goal, geophysicists in Bergen detected seismic motion.

These types of vibrations aren’t limited to sports events. In 2024, Taylor Swift’s concert at SoFi Stadium in Los Angeles generated long-lasting, low-frequency signals detected by seismic sensors. These signals showed harmonic frequency peaks between 1–10 Hz.

The Validity of the Term “Artificial Earthquake”

Recently, the term “artificial earthquake” has increasingly been used to describe atypical vibrations recorded by seismic systems during sports events or large performances. However, as Wired cites experts pointing out, this terminology may not be scientifically accurate.

To clarify, artificial earthquakes do exist and have been studied for decades. Research from Durham University’s Department of Earth Sciences defines artificial earthquakes as “earthquakes induced by human activities.” Relevant human activities include skyscraper construction, groundwater extraction, tunnel digging, enhanced oil recovery, hydraulic fracturing (fracking), and underground gas storage—activities that can alter geological ground behavior.

Based on this definition, the vibrations detected by the SASSLA system following Mexico’s goals cannot be classified as “artificial earthquakes.” For a vibration to be considered an earthquake, it must be associated with geological processes. Merely recording disturbances on a seismometer does not justify categorizing them as earthquakes.

Expert Opinions

Arturo Iglesias, a researcher at the National Autonomous University of Mexico’s Institute of Geophysics, explained years ago that while human activities can produce movements detectable by seismometers, they do not represent actual geological phenomena. Such movements cannot be measured on the earthquake magnitude scale and do not cause changes in subsurface structures.

Iglesias further noted that seismic systems are highly sensitive and capable of detecting minute disturbances. Consequently, everyday human activities like crowd movements or construction work are also recorded, but categorizing them as earthquakes is incorrect.

Challenges Posed by Advances in Seismic

Observation Technology

This case highlights the challenges arising as high-sensitivity seismic observation technology advances. The proliferation of low-cost seismometers like Raspberry Shake has made it possible to routinely record vibrations from human activities, which were previously undetectable. As observational data increases, the importance of accurate filtering methods to distinguish between seismic and non-seismic signals grows.

Early warning systems like SASSLA are primarily designed to quickly detect natural earthquakes and mitigate disasters. While the risk of false alarms caused by fan frenzy is low, caution is required in the context of data interpretation. How should these vibrations be categorized and communicated? The questions raised in Wired’s article also touch upon issues of data literacy within the field of seismology.

Editorial Opinion

In the short term, this case presents a new challenge for the industry as high-sensitivity seismic sensors become more widespread. Data from low-cost seismometers such as Raspberry Shake is increasingly accessible to non-experts. If the term “artificial earthquake” is used without proper context, it could lead to misunderstandings. Seismological institutions need to establish data interpretation guidelines for the general public.

From a long-term perspective, accumulating and analyzing vibration data from human activities could potentially contribute to understanding urban ground vibration characteristics and improving earthquake-resistant building designs. Instead of dismissing vibrations from sports events or concerts as “noise,” research could explore their value as monitoring data in urban environments.

The editorial team believes that as seismometers become more sensitive and data becomes more democratized, we are entering a phase where the very definition of “earthquake” is being questioned. How can the diverse signals captured by sensors be utilized within the contexts of geotechnical engineering or urban planning? The more technology advances, the more careful we must be in assigning meaning to the data.

References

• Wired — Published on 2026-07-01T21:34:03.000Z