Pyroclastic flows are the infamous deadly avalanches of superheated gas and debris that killed thousands at Pompeii and in the 1902 Mount Pelée eruption on Martinique. Now, thanks to a very brave scientist, you can watch a pyroclastic flow up close.
This is one of several videos taken during the recent eruption of Guatemala's Santiaguito (or Santa Maria) volcano. At the Eruptions blog, Erik Klemetti explains the background of how this footage was made, what it shows, and why it's so important.
So, when faced with a pyroclastic flow, why would you try to get up close to one? Julio Cornejo, an INSIVUMEH observer from the Santiaguito volcano observatory (OVSAN), did just that to capture some video (see top and below) that has surprised everyone that has seen it. Cornejo was able to film the very far end of a pyroclastic flow generated by the dome collapse at Santiaguito (see above), when it had lost most of its energy but was still moving. At this point a flow is likely still capable of engulfing and suffocating someone in hot ash and gasses, as happened to many people in the 1902 eruption of Mont Pelee. So, Cornejo is very lucky to have made it out alive with this footage, but what he got was remarkable.
Rudiger Escobar Wolf, a volcanology post-doctoral researcher at Michigan Tech who studies volcanoes in Guatemala, posted a sequence of videos from Cornejo and INSIVUMEH and annotated some of the video to understand what we’re seeing. I’ve also watched the video closely and have two here that show some likely never-before-filmed examples of how pyroclastic flows can be destructive even after they slowed to a snail’s pace relative to their usual speed.
Scott Pruitt, the Trump administration’s top environmental official, privately met with the CEO of Dow Chemical just before reversing the EPA’s efforts to ban a widely used Dow pesticide. Multiple scientific studies showed chlorpyrifos can damage the brains of children. Today’s Associated Press story is a clear case for why the Environmental Protection Agency and […]
The YouTube channel HooplaKidzLab demonstrates some awesome science experiments you can try with your kids this summer. Here’s another video from the channel about how to make a robotic arm out of popsicle sticks:
Scientists discovered this new species of “glass frog” in Ecuador’s Amazon lowlands. Hyalinobatrachium yaku’s belly is so transparent that you can clearly see its kidneys, bladder, and beating heart. From Science News: Yaku means “water” in Kichwa, a language spoken in Ecuador and parts of Peru where H. yaku may also live. Glass frogs, like […]
Despite the upfront cost, electric toothbrushes are much better at removing plaque than those freebies from the dentist’s office. For those who struggle to fill the American Dental Association’s recommended two minutes of brushing time, or anyone with limited dexterity, a sonic toothbrush can give your oral care routine a boost.To keep your chops healthy […]
Learning a new language will give your resume an upgrade, sure, but it will also provide a huge cognitive boost for mental tasks outside of translation and conversation. Bilingual brains have been shown to be better at handling multiple concurrent tasks, and gaining fluency in a new tongue is an amazing way to improve memory, […]
If you struggle to get a good night’s rest, consider replacing your pillows before dropping hundreds on a new mattress. You can give your tired neck a break with a 2-pack of memory foam pillows, available now in the Boing Boing Store.Each of these pillows is stuffed with cooling polyurethane foam that molds to your […]