国产三级大片在线观看-国产三级电影-国产三级电影经典在线看-国产三级电影久久久-国产三级电影免费-国产三级电影免费观看

Set as Homepage - Add to Favorites

【????? ?????? ????? ????????】Scientists just excavated an unprecedented specimen from Antarctica

Source：Feature Flash Editor：fashion Time：2025-07-03 02:01:38

At an extremely remote Antarctic outpost,????? ?????? ????? ???????? scientists have unearthed a pristine sample of our planet's history.

It's an ice core 2,800 meters, or some 1.7 miles, long. But it's not just the length that's so significant. The ice contains preserved pockets of Earth's air from some 1.2 million years ago, if not more. Previous ice cores provided direct evidence of our planet's climate and environment from up to 800,000 years ago.

So, this is a giant leap. The team drilled so deep they reached the continent's bedrock.

You May Also Like

"We have marked a historic moment for climate and environmental science," Carlo Barbante, a polar scientist and coordinator of the ice core campaign called "Beyond EPICA - Oldest Ice," said in a statement.

SEE ALSO: If a scary asteroid will actually strike Earth, here's how you'll know

An international group of researchers excavated the ice at Little Dome C Field Camp in Antarctica, located 10,607 feet (3,233 meters) above sea level. They beamed radar down into the subsurface and used computer modeling of the ice flow to determine where this ancient ice was likely to be. And they were right.

Mashable Light Speed Want more out-of-this world tech, space and science stories? Sign up for Mashable's weekly Light Speed newsletter. By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy. Thanks for signing up!

This was no easy feat. Atop the Antarctic plateau, summers average minus-35 degrees Celsius, or minus-31 degrees Fahrenheit.

The location of Little Dome C research base in Antarctica.The location of Little Dome C research base in Antarctica. Credit: Beyond EPICA / EU Ice core drilled from the recent Beyond EPICA - Oldest Ice expedition. Ice core drilled from the recent Beyond EPICA - Oldest Ice expedition. Credit: Scoto © PNRA / IPEV

Although paleoclimatologists, who research Earth's past climate, have reliable methods of indirectly gauging our planet's deep past — with proxies such as fossilized shells and compounds produced by algae — direct evidence, via direct air, is scientifically invaluable. For example, past ice cores have revealed that the heat-trapping carbon dioxide levels in Earth's atmosphere today have skyrocketed — they're the highest they've been in some 800,000 years. It's incontrovertible evidence of Earth's past.

Scientists expect this even older ice core, however, will reveal secrets about a period called the Mid-Pleistocene Transition, lasting some 900,000 to 1.2 million years ago. Mysteriously, the intervals between glacial cycles — wherein ice sheets expanded over much of the continents and then retreated — slowed down markedly, from 41,000 years to 100,000 years.

"The reasons behind this shift remain one of climate science's enduring mysteries, which this project aims to unravel," the drilling campaign, which was coordinated by the Institute of Polar Sciences of the National Research Council of Italy, said in a statement.

Now, the drilling is over. But the campaign to safely transport the ice back to laboratories, and then scrutinize this over-million-year-old atmosphere, has begun.

"The precious ice cores extracted during this campaign will be transported back to Europe on board the icebreaker Laura Bassi, maintaining the minus-50 degrees Celsius cold chain, a significant challenge for the logistics of the project," explained Gianluca Bianchi Fasani, the head of ENEA (National Agency for New Technologies, Energy, and Sustainable Economic Development) logistics for the Beyond EPICA expedition.

These historic ice cores will travel in "specialized cold containers" as they ship across the globe, far from the depths of their Antarctic home.

0.144s , 10011.203125 kb

Copyright © 2025 Powered by 【????? ?????? ????? ????????】Scientists just excavated an unprecedented specimen from Antarctica,Feature Flash  

Sitemap

Top 主站蜘蛛池模板： 国产成人无码免费精品果冻传媒 | 开心色婷婷| 免费日韩永久精品大片综合NBA免费 | 成人美女黄网站色大色费全看在线观 | 真实国产乱子伦视频对白 | 亚洲乱码中文字幕 | 麻豆av一区二区三区 | 欧美精品黑人粗大免费 | 日本黄色三极片 | 亚洲综合av一区二区三区小说 | 日韩一区二区三区 | 狠狠色丁香九九婷婷综合五月 | 狠狠躁日日躁夜夜躁A片小说免费 | 国产在线观看免费 | 国产精品日韩无码一区二区 | 免费在线人成视频 | 国产精品va尤物在线观看蜜芽 | 国产69精品久久久久乱码免费 | 无码天堂亚洲国产AV久久 | 久久久久国产成人精品 | 九九热免费在线观看 | 欧美日韩国产综合视频 | 亚洲国产精品成熟老女人 | 国产99视频在线 | 精品人妻人人做人人爽夜 | 精品一区二区久久久久久久网站 | 中文字幕一区二区三区视频在线 | 国产国语特级 a毛片 | 国内精品视频在线不卡一区 | 久久天天躁狠狠躁夜夜躁2014 | 亚洲精品成A人在线观看 | 精品无码日本蜜桃麻豆 | 国产无人区一码二码三码MBA | 亚洲中文字幕久久无码精品A98 | 婷婷色亚洲 | 综合久久国产对白 | 亚洲欧美在线视频 | 精品人妻无码中字系列 | 欧美一区二区三区激情视频 | 国精产品一区二区三区有限公司 | 国产精品成人一区二区不卡 |