17 August 2022
Huge volcanic eruptions: time to prepare
https://www.nature.com/articles/d41586-022-02177-x
“Although researchers have long known of the drastic impacts of large-scale volcanic eruptions, the likelihood of such an event has only recently been clarified.
“The recurrence rate of large eruptions can be determined by searching the long-term records for sulfate spikes, stemming from the gas released during globally significant events. In 2021, researchers looked at ice cores from both poles and identified 1,113 signatures of eruptions in the Greenland ice and 737 in Antarctica, occurring between 60,000 and 9,000 years ago. They found 97 events that probably had a climatic impact equivalent to that of a magnitude 7 eruption or greater. They concluded that magnitude-7 events happen about once every 625 years, and magnitude-8 events (also called super-eruptions) about once every 14,300 years2. That’s more frequent than suggested by previous assessments — using geological records and statistical techniques — that found recurrence intervals of 1,200 years for magnitude 7 and 17,000 years for magnitude 85.”
Yup..big ones in 536-37. The Tambora and the..i forget the dam name now..1883.
They figure ones in 536 37 came from Central America. Big discussions about that yet.
So ...... How’s Yellowstone doing these days?
Or do I want to know?