Old Faithful, a famous geyser in Yellowstone National Park, erupts with such a fascinating regularity and is named after the erupting spring.
The incredible hot water and steam explosions supplied by the geothermal activity of the Yellowstone Supervolcano below spout punctually, as they can even predict, giving the geyser the nickname of an eternal clock. But Old Faithful wasn’t always loyal. And long ago, Eternity watches stopped ticking altogether.
Over the last few decades, scientists have shown that Old Faithful’s eruption interval (IBE) has changed significantly, from about 60-65 minutes in the 1950s to about 90-94 minutes since 2001. I observed it.
In a new study, US Geological Survey (USGS) researchers say around the Old Faithful mound to investigate the reasons and the association between Old Faithful IBE variability and long-term drought variability in the region. We have collected some of the debris of mineralized wood found in. I’m sitting faithfully.
Today, mounds are barren and treeless-they do not grow on active geyser mounds, as burns, constant floods and splatters of alkaline-rich emissions are incompatible with germination and seedling growth.
Nonetheless, a pioneering study decades ago analyzed ancient wood samples recovered from Old Faithful. This suggests that geyser eruptions have continued for some time, at least once upon a time, and trees are growing there.
The USGS team analyzed 13 mineralized wood samples recovered from Old Faithful mounds for more information. Radiocarbon dating suggests that these trees grew in Yellowstone centuries ago, around 1233 to 1362 AD.
“When I submitted the samples for radiocarbon dating, I didn’t know if they were hundreds or thousands of years old,” said the lead author and USGS geologist Shaul Hurwitz. Science..
“It was’Ahaha!’. The moment everyone gathered within 100 years from the 13th to the 14th centuries.”
To understand why and how all of these trees were able to survive in this relatively short decades of time, when Old Faithful appeared to have stopped the eruption, researchers were at the time of reduced rainfall. I searched for historical data that could explain the drought condition of. Low groundwater supply turns off the iconic geyser faucet.
They didn’t have to look far. Earlier annual ring data showed significant droughts in this region and elsewhere in the world due to severe conditions during an episode known as medieval climatic anomalies (also known as the Medieval Warm Period).
“It’s a time when vines grew in northern England, sea ice was lost, and people were able to discover Greenland,” said Cathy Whitlock, a paleoclimatologist at Montana State University who was not involved in the study. I explained to.
“At Yellowstone, we know it was warm and dry. The tree limit above is above the slope and there is more evidence of fire during that period.”
The links the team finds don’t just bridge the historic time management gap of Old Faithful. They may also point out changes in future geyser eruptions as the world gets hotter and drier in the face of climate change.
This was foreseen by Hurwitz over a decade ago, and Eternity’s Timepiece shows that it can be unreliable, but the actual clock never stops.
“Climate models predict increasingly severe droughts and large-scale fires by the middle of the century, making a big difference in Yellowstone’s ecosystem,” the team writes.
“Modern observation records show that periods of reduced precipitation reduce the frequency of Old Faithful Geyser eruptions, but the new 14C date for mineralized timber is old with severe and long-term droughts. It suggests that it could lead to the suspension of the Faithful Geyser eruption. “
Survey results will be reported at Geophysics Research Letter..
This article was originally published by ScienceAlert..Read the original article here..