Tuesday, September 22, 2020
Home Environment Volcanic Eruptions Responsible for Cooling of Earth: Researchers

Volcanic Eruptions Responsible for Cooling of Earth: Researchers

A recent study shows that cooling of Earth is caused by volcanic eruptions and not meteors

Analysis of sediment found in a central Texas cave in the US shows volcanic eruptions responsible for the cooling of the Earth around 13,000 years ago, say researchers.

Some researchers believed the event – which cooled the Earth by about 3 degrees Centigrade, a huge amount – was caused by an extraterrestrial impact with the Earth, such as a meteor collision. But the current study, published in the journal Science Advances, shows the evidence left in layers of sediment in Hall’s Cave was almost certainly the result of volcanic eruptions.

Follow NewsGram on Instagram to keep yourself updated.

According to the research team, Hall’s Cave, located in the Texas hill country, has a sediment record extending over 20,000 years and they first began researching the cave in 2017. “One big question was, did an extraterrestrial impact occur near the end of the last ice age, about 13,000 years ago as the ice sheets covering Canada were melting, and cause an abrupt cooling that thrust the northern hemisphere back into the ice age for an extra 1,200 years?” said study researcher Michael Waters from the Texas A&M University in the US.

Cooling of Earth caused by eruptions, not meteors: Study
After a volcano erupts, the global spread of aerosols reflects incoming solar radiation away from Earth and may lead to global cooling. Pixabay

The research team took every avenue they could to come up with an alternative explanation, or even avoid this conclusion. A volcanic eruption had been considered one possible explanation but was generally dismissed because there was no associated geochemical fingerprint, the researchers said.

After a volcano erupts, the global spread of aerosols reflects incoming solar radiation away from Earth and may lead to global cooling post-eruption for one to five years, depending on the size and timescales of the eruption, they added.

Also Read: Entertainment Industry has Made us Whatever we are: Ravi Dubey

“The Younger Dryas, which occurred about 13,000 years ago, disrupted distinct warming at the end of the last ice age,” the study authors wrote. The Earth’s climate may have been at a tipping point at the end of the Younger Dryas, possibly from the ice sheet discharge into the North Atlantic Ocean, enhanced snow cover and powerful volcanic eruptions that may have in combination led to intense Northern Hemisphere cooling.

The team completed the isotopic analysis of sediments collected from Hall’s Cave. They found that elements such as iridium, ruthenium, platinum, palladium and rhenium were not present in the correct proportions, meaning that a meteor or asteroid could not have caused the event.

“The isotope analysis and the relative proportion of the elements matched those that were found in previous volcanic gases,” the authors wrote. (IANS)

STAY CONNECTED

19,144FansLike
362FollowersFollow
1,774FollowersFollow

Most Popular

From “Confusion” To “Clarity” Regarding Sanatan Dharma With Dr. Chandra Shekhar Mayanil

Dr. Chandra Shekhar Mayanil is a Neuroscientist who is currently living in Naperville, Illinois. He has constantly been engaging in topics related to Yog...

Top 5 Beach Activities in Asia

Blessed with some of the most beautiful beaches in the world, Asia has something for everyone. From idyllic white-sand beaches fringed by palm trees...

Here’s Why You Should Switch to Contact Lenses, and It’s Not Just About Looks

Traditionally, we use eyeglasses for correcting vision problems such as near-sightedness (myopia) and far-sightedness (hyperopia). Glasses are both affordable and convenient to wear for...

This Indian Couple Run Street-Side Classes For Poor And Needy Children

On a quiet road in India's capital, tucked away on a wide, red-bricked sidewalk, children set adrift by the country's COVID-19 lockdown are being...

Lockdown Taught Me Greatest Lessons of Life: Mouni Roy

Actress Mouni Roy, who will soon be seen in the digital film, London Confidential, opposite Purab Kohli, says that lockdown taught her some of...

“It is Important To Support Folk Artists and Daily Workers in Trying Times”, Says Popular Singer Shaan

Popular playback singer Shaan says that folk artists and daily workers are keeping the music heritage and industry intact, and it's crucial for the...

Here’s How The Art of “Writing” Became an Empowerment Tool For These Female Authors

By Siddhi Jain Being a female author can come with its own set of challenges, especially when one is trying to juggle a career in...

Self-Driving Cars To Navigate Rush Hour Traffic On This Planet: NASA

A laser-based technology designed to help spacecraft land on a proverbial dime for missions to the Moon and Mars is also helping self-driving cars...

Recent Comments