The asteroid Chicxulub – which caused the extinction of dinosaurs – led to a prolonged era of global warming when it crashed on Earth 65 million years ago, with a rapid temperature rise of 5 degrees Celsius that lasted for approximately 100,000 years, according to a study.
Image representation. Pixabay
The monumental event is a rare case in which the systems of the Earth were disturbed at a faster rate than human activity.
Provides valuable information about what can happen from sudden and extreme environmental changes.
The side effects of the Chicxulub impact are still debated, and some scientists argue that the soot in the atmosphere blocked the Sun just enough to drive global cooling. Others suggest that the carbon released from the earth's crust into the atmosphere after the impact of the asteroid, as well as the carbon from forest fires, had a warming effect.
To better understand how the temperature changed during this time, the researchers-including those at the University of Missouri and the University of Colorado Boulder in the USA. UU. – They badyzed a solid collection of well preserved, sand, fish tooth remains, scales and bones the size of a grain from a site in Tunisia.
These samples retain isotopic oxygen signatures that reveal the temperature at the time the related animal was alive.
The researchers were able to collect sediment samples that span the time prior to Chicxulub's impact, until much later.
According to their badysis, they propose that global temperatures increased by approximately 5 degrees Celsius and did not cool to previous values for approximately 100,000 years after impact, a magnitude and duration of warming that closely coincided with carbon dioxide levels that some Types of badysis estimated were issued during the same period. 19659012]! Function (f, b, e, v, n, t, s) {if (f.fbq) return; n = f.fbq = function () {n.callMethod?
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