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Antartic Ice: 100 years Old Notebook Found in Trapped

October 25, 2014 By June Harris

100-years-old-notebook-found

Robert Scott, a British pilgrim who kicked the bucket with his sidekicks because of starvation, fatigue and the outrageously frosty climate on his second endeavor to the Antarctic. Be that as it may, following 100 years of his passing, a relic from his doomed Terra Nova Expedition of 1910-1913 has showed up.

New Zealand’s Antarctic Heritage Trust, said in an announcement discharged on twentieth Oct that a Scott’s note pad was discovered caught in ice in a cabin.

In the wake of analyzing the writings composed on the record book’s opening pages, the analysts found that it was claimed by George Murray Levick, a zoologist, specialist and photographic artist who was part of Scott’s 1910-1913 voyages to the Antarctic and one of the six parts of the endeavor’s Northern Party.

The Terra Nova campaign part into two gatherings in the wake of arriving at the Antarctic. Scott’s gathering arrived at the South Pole on seventeenth Jan, 1912.

Interestingly, Levick’s gathering, ventured along the coast directing exploratory perceptions. Nonetheless, Pack ice kept their boat from lifting them up so Levick alongside alternate parts of their gathering overwintered in an ice buckle on Inexpressible Island. Dissimilar to Scott and his unexpected, Levick’s gathering survived consuming neighborhood natural life, for example, seals and penguins.

“Wellcome Photographic Exposure Record and Dairy 1910″, Levick’s newfound photography record book was deserted at the 1911 Terra Nova base at Cape Evans, where it was found outside of a cabin by the Trust’s moderate authorities amid a year ago’s late spring liquefy in the wake of being covered up for a century.

The note pad contains sections, which give points of interest of the photos that Levick had taken in 1911 at Cape Adare, for example, the dates they were taken, the subjects and presentation subtle elements. The Trust said that the passages were composed before the gathering needed to rival pitiless climate conditions and got marooned on indescribable Island.

Antarctic Heritage Trust Executive Director Nigel Watson expressed, “It’s an elating find. The journal is a missing piece of the authority campaign record. In the wake of putting in 7 years rationing Scott’s last campaign building and gathering, we are enchanted to still be discovering new relics

Filed Under: Science Tagged With: 100 years, antartic expedition, antartic ice, notebook

Earth’s Magnetic Field Might Swap in Our Lifetime

October 21, 2014 By Marlene R. Litten

Earth's-magnetic-swap

Throughout the history of Earth, the planet’s magnetic poles have undergone 180-degree flips and the next one might occur in our lifetime.

The Earth’s magnetic North was on Antarctica some 800,000 years ago, Live Science reported. As per the past studies, the flipping process takes thousands of years, however new analysis suggests the last one may have been as short as 100 years. The researchers examined the data gathered by a European Space Agency (ESA) satellite during summer and revealed that the Earth’s magnetic field is weakening 10 times faster than previous studies have estimated and that the next flip may be a couple thousand years away.

Courtney Sprain, study’s co-author and a graduate student at the University of California stated that, “It’s marvelous how swiftly we see the reversal. The paleo-magnetic data are very well done. This is one of the best records we have so far of what happens during a reversal and how quickly these reversals can happen.”

Certainly, the flipping of magnetic field is not usually linked with the natural disasters, though such events could demolish the Earth’s electrical grid. Since the magnetic field also helps protect humans from the sun’s cosmic rays, the rate of cancer on Earth could also spike.

Paul Renne, study’s co-author and director of the Berkeley Geochronology Center and a UC Berkeley professor, said in the press release, “What’s incredible is that you go from reverse polarity to a field that is normal with essentially nothing in between, which means it had to have happened very quickly, probably in less than 100 years. We don’t know whether the next reversal will occur as suddenly as this one did, but we also don’t know that it won’t.”

The European Space Agency satellite studied the magnetic field from above, while Renne and a team of researchers studied it from below. Scientists excavated through ancient lake sediments revealed at the bottom of the Apennine Mountains in Italy. Ash layers from long-ago volcanic eruptions are mixed into the sediment. The ash is made of magnetically susceptible minerals that hold traces of Earth’s magnetic field lines, and the researchers were able to measure the direction the field was pointing.

Paul Renne and colleagues then used a technique called argon-argon dating which works because radioactive potassium-40 decays into argon-40 at a known rate to determine the age of the rock sediment. The layers built up over a 10,000-year period, and the researchers could pinpoint where the poles flipped in the rock layers. The last flip happened around 786,000 years ago.

Sudden Swap

The researchers examined the sediment layers, which showed that before the sudden flip flop, the magnetic field was unsteady for about 6,000 years. The period of flux included two low points in the field’s strength, each of which lasted about 2,000 years.

Certainly, the geologists don’t know where the magnetic field is now in that reversal time scale or if this flip will even follow the same pattern as the last. The bottom line is that no one is sure when it’s coming.

Renne wrote an email to the Live Science, “We don’t have any idea whether the next reversal is going to resemble the last one, so it’s impractical to say whether we’re just seeing the first of possibly several expeditions (slight movements), or a true reversal.”

Magnetic doomsday?

There is no need to panic, if a pole flip could cause few technical issues. Researchers have examined the geological timeline for any evidence of catastrophes that might be related to a magnetic flip. Though, they haven’t found any.

The only anticipated havoc that a reversal would cause is intruding the global electric grid. There seems no direct evidence of past catastrophes, that is caused by a magnetic flip. Although, if the magnetic field weakens enough or temporarily disappears during the flip, then the Earth could be hit with dangerous amounts of solar radiation and cosmic rays. The exposure could mean that more people develop cancer, Renne said, though there’s no scientific proof this could happen.

We need more research to realize the possible consequences of a flipping magnetic pole, Renne stated.

The new study is published in the Geophysical Journal International.

Filed Under: Science Tagged With: 100 years, 180 degrees, 800000 years ago, Antarctica, Courtney Sprain, Earth's magnetic field, esa, European Space Agency, Flip, Paul Renne, satellite, sediment layer, Swap

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