Menu Close

Antarctica rocked by 30,000 tremors in three months: Chilean scientists. Several tectonic plates and microplates meet near the strait, leading to frequent rumbling, but the past three months have been unusual, according to the center

More than 30,000 tremors have rocked Antarctica since the end of August, according to the University of Chile, a spike in seismic activity that has intrigued researchers who study the remote, snowbound continent.

Scientists with the university’s National Seismological Center said the small quakes – including one stronger shake of magnitude 6 – were detected in the Bransfield Strait, a 60-mile wide (96-km) ocean channel between the South Shetland Islands and the Antarctic Peninsula.

Several tectonic plates and microplates meet near the strait, leading to frequent rumbling, but the past three months have been unusual, according to the center.

“Most of the seismicity is concentrated at the beginning of the sequence, mainly during the month of September, with more than a thousand earthquakes a day,” the center said.

The shakes have become so frequent that the strait itself, once increasing in width at a rate of about 7 or 8 mm (0.30 inch) a year is now expanding 15 cm (6 inches) a year, the center said.

“It’s a 20-fold increase … which suggests that right this minute … the Shetland Islands are separating more quickly from the Antarctic peninsula,” said Sergio Barrientos, the center’s director.

The peninsula is one of the fastest-warming places on Earth, and scientists closely monitor the changing climate’s impact on its icebergs and glaciers.

But climate scientist Raul Cordero of the University of Santiago said it was not yet clear how the tremors might be affecting the region’s ice.”There’s no evidence that this kind of seismic activity … has significant effects on the stability of polar ice caps,” Cordero told Reuters.

Article: https://www.moneycontrol.com/news/world/antarctica-rocked-by-30000-tremors-in-three-months-chilean-scientists-6237151.html

Leave a Reply

Your email address will not be published. Required fields are marked *

(UN General Assembly, 1948) The Universal Declaration of Human Rights: 1. All human beings are free and equal 2. No discrimination 3. Right to life 4. No slavery 5. No torture and inhuman treatment 6. Same right to use law 7. Equal before the law 8. Right to be treated fair by court 9. No unfair detainment 10. Right to trial 11. Innocent until proved guilty 12. Right to privacy 13. Freedom to movement and residence 14. Right to asylum 15. Right to nationality 16. Rights to marry and have family 17. Right to own things 18. Freedom of thought and religion 19. Freedom of opinion and expression 20. Right to assemble 21. Right to democracy 22. Right to social security 23. Right to work 24. Right to rest and holiday 25. Right of social service 26. Right to education 27. Right of cultural and art 28. Freedom around the world 29. Subject to law 30. Human rights can’t be taken away