Sentences with phrase «ice drilling core»

Last month, in an excellent piece of research (Sigl et al., 2015) by a collaboration including Earth scientists, dendrochonologists, and historians, the chronology of the Greenland North Eemian Ice Drilling core (NEEM) has been reassessed and re-dated, confirming that such an offset does indeed exist in the GICC05 timescale below AD 1000.

Not exact matches

Australian scientists have welcomed the success of a five - year Greenland ice core drilling project that is expected to reveal a record of more than 130 000 years and provide an insight into future global climate.

Researchers established the first camp here in 1989, at the start of an international effort that drilled the 3,053 - meter - long Greenland Ice Sheet Project - 2 ice core, retrieving a record of climate over the previous 110,000 yeaIce Sheet Project - 2 ice core, retrieving a record of climate over the previous 110,000 yeaice core, retrieving a record of climate over the previous 110,000 years.

Thompson's Ohio State University team returned to the Quelccaya ice cap in the southern Andes in 2003 to drill a new set of ice cores.

Quelccaya is so remote that on one of his first treks to drill for ice core samples, Thompson and his team could not get their drill and generator to the work site.

Their scientists flew more than 250,000 kilometres across much of West Antarctica — including the areas draining to the Ross and Ronne ice shelves — and part of East Antarctica, including the famous ice - core - drilling sites Vostok and Dome C.

Scientists drilling ice cores out of Greenland have found lead from fly ash, a byproduct of coal combustion, dating back to the era.

The analysis focuses on two ice cores drilled in 2013 from Mount Hunter in Alaska's Denali National Park, and an older ice core from Canada's Mount Logan.

Clow measured twice, once in 2011 and again in 2014, the temperature in a 3.4 - kilometer - deep (2 - mile - deep) borehole from which the West Antarctic Sheet Divide ice core had been drilled during an eight - year project that ended in 2011.

This is the ice core driller Tanner Kuhl with the blue ice drill on Taylor Glacier in Antarctica.

«Most people assume that it's a question of just drilling deeper for ice cores, but it's not that simple,» said Edward Brook, an Oregon State University geologist and co-author on the study.

Scientists spent a month in Denali National Park in 2013 drilling ice cores from the summit plateau of Mt. Hunter.

The research team drilled two ice cores from a glacier on Mt. Hunter's summit plateau, 13,000 feet above sea level.

Support for the idea came from ice cores arduously drilled from the Greenland ice sheet.

Sean Mackay uses a manual drill to obtain an ice core sample while Marchant looks on.

The team based its analysis on ratios of oxygen and hydrogen isotopes in ice cores drilled in East Antarctica.

More than a decade ago, the European Project for Ice Coring in Antarctica (EPICA) drilled the oldest existing core, which contains 800,000 - year - old ice, from an ice dome in East Antarctica known as DomeIce Coring in Antarctica (EPICA) drilled the oldest existing core, which contains 800,000 - year - old ice, from an ice dome in East Antarctica known as Domeice, from an ice dome in East Antarctica known as Domeice dome in East Antarctica known as Dome C.

As yet, no one has touched the waters of a subglacial lake with so much as a drill bit, but a Russian group that has been coring ice over Lake Vostok to get ancient climate records is coming close.

In 1998, while boring near the bottom of that long core, expecting to hit bedrock, the drillers brought up ice with crystals that were startlingly different from those usually found in glacial ice.

The new cores, drilled from Peru's Quelccaya Ice Cap, are special because most of their 1,800 - year history exists as clearly defined layers of light and dark: light from the accumulated snow of the wet season, and dark from the accumulated dust of the dry season.

Enter a new breed of drill, designed to do fast, cheap reconnaissance instead of extracting a single, intact ice core, as previous deep drills have done.

It is only recently that very deep cores have been drilled — and three of them contain ice more than 160,000 years old.

They obtained it by drilling the oldest ice core ever, almost two miles into a godforsaken spot called Dome C — 600 miles inland from the Antarctic coast and a little more than 1,000 miles from the South Pole.

In 2005, the European Consortium for Ice Coring in Antarctica (EPICA) drilled an ice core in Dome C on east Antarctica's plateau that stretches our record of the ancient atmosphere back 800,000 years (Quaternary Science Reviews, DOI: 10.1016 / j.quascirev.2010.10.00Ice Coring in Antarctica (EPICA) drilled an ice core in Dome C on east Antarctica's plateau that stretches our record of the ancient atmosphere back 800,000 years (Quaternary Science Reviews, DOI: 10.1016 / j.quascirev.2010.10.00ice core in Dome C on east Antarctica's plateau that stretches our record of the ancient atmosphere back 800,000 years (Quaternary Science Reviews, DOI: 10.1016 / j.quascirev.2010.10.002).

One such ice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciIce Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical species.

They planned to drill out ice cores to study past climates.

The International Partnerships in Ice Core Sciences (IPICS) aims to identify a suitable site to drill a core representing Antarctica's oldest ice in the next two yeaIce Core Sciences (IPICS) aims to identify a suitable site to drill a core representing Antarctica's oldest ice in the next two yeCore Sciences (IPICS) aims to identify a suitable site to drill a core representing Antarctica's oldest ice in the next two yecore representing Antarctica's oldest ice in the next two yeaice in the next two years.

«Due to the remoteness of the ice cap, we had to develop new tools such as a light - weight drill powered by solar panels to collect the 1983 cores.

The Thompsons have drilled ice cores from glaciers atop the most remote areas of the planet — the Chinese Himalayas, the Tibetan Plateau, Kilimanjaro in Africa, and Papua Indonesia among others — to gauge Earth's past climate.

Geoscientist John Higgins (right) of Princeton University and his team drilled at three sites, hauling tents and equipment, such as a drill bit filled with an ice core.

At the moment, the only way to measure the thickness of sea ice is to drill hundreds of ice cores.

Current research methods such as ice - core drilling can produce high - quality records of aerosols and soot going back centuries and even millennia, he says, and «these written accounts provide a good complement» to the data.

To investigate the climate changes of the past, the scientists are studying drill cores from the eternal ice.

Through the NSF - funded South Pole Ice Core (SPICECore) project, researchers drill deep into the ice to extract ice corIce Core (SPICECore) project, researchers drill deep into the ice to extract ice corice to extract ice corice cores.

Although scientists have analysed gases from tiny bubbles trapped in ice cores drilled in polar ice caps, there are doubts about how closely the composition of the bubbles matches that of the atmosphere at the time they were trapped (see New Scientist, Science, 22 August).

Lonnie Thompson, an earth scientist at The Ohio State University's Byrd Polar Research Center who also is not part of the project and has been drilling ice cores on the world's highest mountain ranges for 38 years.

Researchers speculate that primitive life could eke out an existence there, subsisting on a bare minimum of dissolved organic carbon — a notion bolstered by the recent discovery of bacteria within refrozen ice in a core drilled to 100 meters above the lake under Vostok Station (ScienceNOW, 9 December 1999).

He returned to Antarctica in 1964 for nine months to test ice core drills.

The Russians had drilled to a depth of over 2,000 meters and recovered an ice core that went back 420,000 years.

Meanwhile, Bell said, the findings» impact on efforts to drill new ice cores is still unclear.

However, drilling deeper to collect a longer ice core does not necessarily mean finding a core that extends further into the past.

The change is most noticeable on the Guliya Ice Cap, where they drilled the latest ice coIce Cap, where they drilled the latest ice coice core.

Ice cores drilled from a glacier in a cave in Transylvania offer new evidence of how Europe's winter weather and climate patterns fluctuated during the last 10,000 years, known as the Holocene period.

Crucially, they also found that an ice core extending that far into the past should be between 2.4 and 3 - km long, shorter than the 800,000 - year - old core drilled in the previous expedition.

This correlation is also seen in the Greenland ice cores that are drilled through the approximately three kilometer thick ice sheet.

European glaciologists drilling an ice core from the highest point of the Greenland ice sheet expect to reach bedrock, 3050 metres below, this week.

Here, at the West Antarctic Ice Sheet Divide, Kendrick Taylor and his team of glaciologists drill into ancient ice to pull up ice cores, which trap bubbles of the atmosphere from the time that ice fell as snIce Sheet Divide, Kendrick Taylor and his team of glaciologists drill into ancient ice to pull up ice cores, which trap bubbles of the atmosphere from the time that ice fell as snice to pull up ice cores, which trap bubbles of the atmosphere from the time that ice fell as snice cores, which trap bubbles of the atmosphere from the time that ice fell as snice fell as snow.

In 1959, the U.S. Army Corps of Engineers built the subterranean city under the guise of conducting polar research — and scientists there did drill the first ice core ever used to study climate.

After drilling ice core containing thousands of years of accumulated caribou dung (shown above), scientists recovered the complete genome of a DNA virus and the partial genome of an RNA virus from frozen feces dated to 700 years old, they report online today in the Proceedings of the National Academy of Sciences.

The team will switch drill bits from the large one that takes ice cores as it goes to a smaller one only a few centimetres in diameter, which will melt its way down using a sterile silicone fluid.