Collecting these gases is key to understanding the mysterious ways of volcanoes, but it can be dangerous
This article by Fiona D'Arcy, McGill University originally appeared on the Conversation and is published here with permission.
On average, there are up to 50 volcanoes actively erupting on the planet at any given time. Many of these volcanoes are more likely to be spewing hot gases — like steam and carbon dioxide — than lava. .For the better part of the last decade, I have been visiting such gassy volcanoes regularly to catch them just before, during or after an eruption.
By obtaining a sample of this volcanic carbon, we can measure the stable carbon isotopic ratio, a unique chemical makeup which reflects the source and pathway the CO2 took to the surface. We arrived in Costa Rica in April 2019 with our shiny new drone set-up, which we launched at the rim of Poás volcano and which crashed almost immediately. Thankfully, our team whipped up a quick solution for our second drone — a pump and switch hanging from the drone in a laundry bag. It worked flawlessly.
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