How does volcano change the Earth?

Volcanic eruptions have changed lives as well as human history for over 2,500 years, and are the cause of the coldest summers from 500 BC (BC) to 1000 AD. (AD).

The impact of volcanic eruptions on Earth

According to IB Times, the team of 24 scientists, led by researchers at the Desert Research Institute in Nevada (USA), used new data to understand the impact of volcanic eruptions on transformation. climate .

Dust ash from Calbuco volcano looks from the city of Puerto Montt, Chile.(Photo: AFP)

The team used 20 columns of ice taken from ice sheets in Greenland and Antarctica to find sulphate molecules in volcanic ash. These molecules help scientists find the concentrations of sulphate in the atmosphere over the years, thereby repeating the timeframe of nearly 300 volcanic eruptions over the past 2,500 years.

"When we use new records, we discover volcanic eruptions occurring in the tropics and at high latitudes that are the main causes of climate change as well as numerous "The extreme cold season lasted for more than 2,500 years. The low temperature is caused by a large amount of sulphate molecules in volcanic ash that fly into the upper atmosphere, covering the Earth's surface from solar radiation." Michael Sigl, the lead researcher, said.

The research team translated the ancient documents of China, Babylon (Iraq) and Europe to record the anomalies of the atmosphere at the beginning of 245 BC with phenomena like sunshine disappearing, twilight skies red, disc sun discolored, the sun appeared corona halo.

The study results show that volcanic eruptions have the most powerful and longest effects are eruptions in the northern hemisphere in 536, 626 and 939 BC, causing cold summers and prolonged in many places. , resulting in crop failure and hunger.

The study also pointed out that volcanic eruptions caused dust clouds to cover the Mediterranean for a year and a half since March 536 AD, causing one of the most serious climate crises in modern history.

Scientists believe that volcanic eruptions also contributed to the outbreak of Justinian plague, destroying the majority of the population in Eurasia from 541-543 AD.

" The timeline of newly erupted volcanic eruptions will improve climate simulation simulations through indicators of climate system sensitivity to the impact of volcanic eruptions in the past 2,500 years," Joe Mc Connell, co-author of the study, said.

"As a result, climate change is observed through many stages that can be considered in many different angles, such as during the Roman warming period or periods of important cultural changes such as the period. Large immigrants occurred in Europe in the 6th century. "