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Scientists warn that large meteorites hit the Earth every 180 years like a nuclear bomb

Scientists warn that large meteorites hit the Earth every 180 years like a nuclear bomb 86

A team that studied Australia’s Wolfe Creek crater calculated how often meteorites hit Earth with the force of massive nuclear explosions, every 180 years to be precise.

Professor Tim Barrows of Wollongong University led an international team that used two techniques to date rocks affected by the impact of the Wolfe Creek crater, revealing that he is much younger than previously thought.

“The first was to get some rocks from the edge of the crater that had been ejected when the meteor hit, and this creates a cool surface that is exposed to radiation, and we can determine how long that exposure has been,” said Barrows. “The second technique was to observe the dune field that had been diverted by the crater.”

The team discovered that a 15-meter-wide iron meteorite was more likely to hit the site 120,000 years ago, less than half of the previous estimate of 300,000 years ago.

“The amount of energy that was released when the meteorite hit was on the order of 30 to 40 times the energy released by the bomb that fell on Hiroshima,” said Barrows.

The Wolfe Creek crater is one of the best preserved craters on planet Earth, partly due to its relatively young age, but also due to its location in a geologically stable desert, which describes two-thirds of Australia, which means that the craters of Earthly meteorites found here have their best chance of longevity.

“The arid area of ​​Australia is an excellent area in terms of meteorite preservation, there are a lot of meteorites that have been found in the Nullarbor plain, for example,” said Barrows, “but it is also excellent for preserving craters because erosion rates are very low. ” “.

Barrows and his team discovered that meteorites measured in tens of meters, such as the one created by the Wolfe Creek crater, are much more common than large meteorites, measured in kilometers, that only impact the Earth every few million years. Six other Australian craters with known impact dates were combined with new research at Wolfe Creek to produce a frequency of attacks on that area of ​​the Earth’s surface.

“It seems that we are getting at least one large meteorite, in general, more than 25 meters or so, every 180 years,” Barrows said. “There have probably been four craters formed by meteorites that hit the Earth in the last 60 or 70 years. “

Barrows said that since most of these meteors are hitting the oceans, since 75 percent of our planet is covered with water, a meteorite of this type is unlikely to hit a population center. However, says Barrows, they are still important events in the geological history of those areas.


Planet Earth

Polar vortex: “wild” winter is coming in the US, Northern Europe and East Asia after the 16th of January

Polar vortex: "wild" winter is coming in the US, Northern Europe and East Asia after the 16th of January 99

In the upper atmosphere above the North Pole, experts saw a rapidly swirling vortex of cold air that could bring severe frosts to the United States, Northern Europe and East Asia. Serious cold snap and snowy weather are expected after January the 16th.

Snowfalls and a cold snap hit South Korea since the start of 2021, hitting historic snow maximums and temperatures. In the country, for the first time since 1964, television and newer communications are sending people cold snap warnings:

The situation is similar in Japan, where a new snow storm hit historic highs:

On January 7, the thermometer In Beijing dropped to -20 degrees Celsius, breaking the 1966 record. In other regions of China, the temperature is also not sugar, and you can only move around in special uniforms:

The cold even reached Taiwan, where the temperature in some areas dropped below freezing point, snow poured down and people realized that rice terraces can be used as a ski jump:

Even more snow went to Spain, where on January 6, 2021, a temperature of -34.1 ° C was recorded – the lowest on record. After that, a snow storm hit the country, which has not been seen for 80 years:

The same thing happens in Canada and in the northern states of the United States:

It seems that after a stratospheric warming, the subpolar vortex began to split:

The vortex itself is a standard phenomenon. However, this time experts were surprised at his movement. It is possible that in the near future it will be divided into two parts. 

Scientists associate the strange behavior with the changed climate in the Arctic, which has become warmer. From September to December, the amount of ice cover decreased significantly.

The polar vortex is a low-pressure region located in the stratosphere and filled with cold air. When the jet stream of air that holds the vortex weakens, the low pressure area moves south. 

As the ice shrinks, more moisture will move inland. It will turn to snow, so snowfalls are expected. Snow, in turn, reflects heat, leading to a cold snap.

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Planet Earth

Hospital in Naples was evacuated after a new, huge sinkhole appeared

Hospital in Naples was evacuated after a new, huge sinkhole appeared 100

Eyewitnesses said they heard a loud crash at dawn when a huge hole in the ground formed outside the Ponticelli Ospedale del Mare hospital in eastern Naples.

Early in the morning of January 8, 2021, a sinkhole occurred in the parking lot of a clinic in Naples. The depth of the formed cavity is about 20 meters, the total area of ​​the hole is about 2,000 square meters.

No casualties were found at the scene; firefighters say the sinkhole “affected an area of ​​about 500 square meters” and engulfed several cars parked near the hospital.

As the press writes and as a little can be seen from the videos, rescuers and firefighters were running around the pit together with the governor of the area.  But who should be there in the forefront are Italian geologists, since Naples stands in the very center of the volcanic system known as the Phlegrean Fields.

If the surface collapsed, moreover – the surface reinforced with concrete and reinforced from below with some kind of communications, then we are talking about serious soil deformations caused by the activity of magma.

Italy has been in doubt since the summer of 2020, because swarms were observed there in very atypical places in May, and according to the forecasts of old Italian seismologists, who had witnessed many strong earthquakes, it should have boomed in the August region.

Fortunately, nothing bad happened to Italy and there was no big earthquake. But, since there are swarms, it means that something is being prepared, the magma is gathering strength. 

Following this particular sinkhole event – an obvious sign that a major earthquake in Italy is already very close.

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Planet Earth

A new great pandemic cycle has begun (again) in China

A new great pandemic cycle has begun (again) in China 101

In the first months of 2020, the whole world with a certain fright followed the events unfolding in China, where people fell on the streets during the day and astronauts wandered, and in the evening crematoria began to smoke. And now, with the onset of December, the cycle seems to be repeating itself.

Shunyi area in Beijing, where the authorities announced “wartime status” the day before. As you can see in the videos, thousands of people are lined up in the queue for mandatory testing:

Dalian city, where “wartime” is also declared. Neighborhoods are blockaded, people are walled up in entrances, familiar characters of George Lucas roam the streets:

Chinese ‘rescuers’, before performing a combat mission:

Chengdu City:

Daluo Port, Yunnan – tourists came for adventure and they received the ‘time of their life’ after leaving the ramp:

If something happens in Beijing, it does not mean that tomorrow the same will happen everywhere. However, the trend towards such dynamics is observed and, as the practice of the first wave of the pandemic has shown, all countries and people, to one degree or another, have taken into account the ‘Chinese experience’. 

Therefore, one must think that everything will now be in peace, as in spring – a new global round of the fight against the Covid has begun in China, a new great pandemic cycle!

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