Autonomous drones measure volcanic gas clouds, offering clearer eruption warning signs

To better assess the danger posed by volcanoes, researchers at the Technical University of Munich (TUM) have developed a new measurement system.

Laser beams are sent through escaping gas clouds and reflected by drones.

An algorithm uses the reflected signals to generate a map showing gas concentrations, including elevated carbon dioxide levels.

The ratio of carbon dioxide to sulfur dioxide is an important indicator of impending eruptions. ...