(환경) 빙하 연구와 지구의 과거, 미래

 

And our planet. In a very remote place, what the ice can tell us about where we’re all headed. Nightly News begins now. Tonight, she takes us to Greenland where they are studying our past by studying the ice beneath them. And it may tell us something about the future of our planet. 800 miles north of the Arctic Circle near the very top of Greenland, buried in the ice is one of the world’s most remote climate change research projects. Here, an international team of scientists drills into the past to learn what our future may hold. This is the entrance to the drill trench some 30 feet below the surface of the ice. And this is where the search for answers begins.

 

In a lab straight out of the James Bond thrillers, scientists use computers to lower this giant drill into the ice. It takes two hours to cut and pull up an ice core. “How old is this ice?” “This one is like about 11,700 years old.” Like tree rings, the ice records the earth’s climate history red by Ohio state researcher Katelyn Kigen. “You can the different melt layers and annual layers and the bubbles.” The ice cores are cut, polished and analyzed in brutal conditions. Here, the walls, the floor, everything is ice. On this day, it was 18 degrees above ground, but they work three stories and several degrees below.

 

Project leader Dolce Dol Jansen says the nearly 12,000-year-old ice is giving up its secrets. “We see a change of temperature warming of appximately 20 Fahrenheit happening in two years. That is something that’s just unbelievable.” Swift abrupt급격한 climate change. This ice has never been watered here on earth. It started to snow. And over the decades and centuries, it’s been compressed under its own weight to form ice. Ice that scientists believe is the purest in Greenland. In their first summer, scientist drill just over a mile down. Their goal? 1.6 miles, an ice of nearly 130,000 years ago when Greenland was 9 degrees warmer than today. Eventually, the earth cooled and entered the ice age.

 

“The sole reason for drilling here is to get the oldest ice in an unbroken record from Greenland.” What the ice has already revealed, Dol Jansen says, is mindboggling굉장히 난해한 상상을 초월한. “I think if you asked anyone with a climate model can this happen, there’s no way you can climate system be behave like that. But we see it in the ice cores!” A warning from this distance frozen scientific outpost to prepare for what could be dramatic even deadly changes in our environment. Anne Thompson, NBC News, on the Greenland ice sheet.

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