Non contact measurement & inspection F
ollowing the eruption of the Cumbre Vieja volcano in La Palma in 2021, the National Geographic Institute (Instituto Geográfico Nacional - IGN) has strengthened its system for monitoring volcanic activity on the island with a new gas detection tool. The FLIR G343 OGI camera, supplied by Apliter Termografía, can identify carbon dioxide (CO2) emissions in real time with high accuracy, improving risk assessment capabilities in areas affected by volcanic activity.
BOOSTING VOLCANIC SURVEILLANCE IN LA PALMA
Detection of gas in areas of La Palma using an OGI camera. Source: Apliter Termografía
THE CHALLENGE OF GAS DETECTION IN LA PALMA
Volcanic activity in La Palma has created a complex situation for environmental surveillance and safety. Although the eruptive phase of the Cumbre Vieja volcano finished at the end of 2021, the emission of gases, such as CO₂, remains a challenge. Since it is a colourless and odourless gas, it can build up in areas that are difficult to access. This creates risks for both the population and the research teams working on the island. The accumulation of CO₂ in low or poorly-ventilated areas displaces oxygen from the air. This can cause dizziness, shortness of breath, disorientation and even loss of consciousness. In volcanic environments, where gas is concentrated in depressions in the ground or enclosed spaces, the risk is even higher.
In La Palma, the lack of real-time sensors made it difficult to detect these dangerous areas, which increased the risk of accidental exposure. To improve the surveillance and monitoring of these emissions,
IGN needed a solution, such as an OGI thermal imaging camera, that would provide accurate data immediately and enable rapid action. To address this challenge, Apliter Termografía supplied the FLIR G343, a specialised gas detection device using Optical Gas Imaging (OGI). Unlike traditional methods, which require sample collection and laboratory analysis, this thermal imaging camera can detect gases directly in the field. It provides real-time data that optimises monitoring and reduces exposure to risk areas.
Detection of gas in areas of La Palma using an OGI camera. Source: Apliter Termografía.
Detection of gas in areas of La Palma using an OGI camera. Source: Apliter Termografía.
INNOVATION IN VOLCANO MONITORING
The Deputy Director of IGN and the Commercial Director of Apliter with the FLIR G343. Source: EFE
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Carmen López, the Deputy Director General of Surveillance, Alerts and Geophysical Studies at the National Geophysical Observatory - IGN, highlighted the importance of this new tool, stating that “No volcano observatory has a volcano surveillance tool as powerful as this camera”. Apliter Termografía’s commercial director travelled in person to La Palma to deliver the FLIR G343 and demonstrate how it works. During the field tests, IGN researchers saw first-hand how the device can identify areas with a build-up of CO₂, optimise their everyday tasks and improve safety in post-eruption monitoring.
IMPACT OF THE THERMAL IMAGING CAMERA WITH OPTICAL GAS IMAGING (OGI) ON SAFETY AND SCIENCE By adopting the FLIR G343, IGN has managed to optimise its ability to respond to post-eruption activity in La Palma. The thermal imaging gas detection camera has not only enhanced researchers’ safety, but also aids real-time decision-making and collection of essential data for scientific studies on the evolution of the phenomenon and its long-term implications. This success story shows how a combination of advanced technology and specialised knowledge can make a big difference in natural risk management. The collaboration between Apliter Termografía and FLIR reaffirms their commitment to safety, research and development of innovative solutions for high-risk environments.
FLIR
www.teledyneflir.com June 2025 Instrumentation Monthly
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