Earth's moon is shrinking and quaking, study says

14 May, 2019, 07:09 | Author: Darnell Taylor

The fault scarps themselves are also a clue.

Over the last several hundred million years, Nasa scientists have found the moon has reduced its size by 50 metres due to a cooling interior, and it is still tectonically active.

Researchers re-analysed seismic data they had from the moon to compare with the images gathered by the orbiter.

From the data analysed and algorithms used, researchers were able to determine eight of the 28 shallow quakes recorded were within 30 kilometres of faults and were visible in lunar images.

The team then superimposed this location data onto the LRO imagery of the thrust faults.

According to a new research study, the Moon may be shrinking as it experiences lunar quakes, known as "moonquakes".

These incredible findings were published today (May 13) in the journal Nature Geosciences.

"The Apollo 11 seismometer operated only for three weeks, but the four remaining recorded 28 shallow moonquakes - the type expected to be produced by these faults - from 1969 to 1977", the release says.

Kim Kardashian Fourth Baby Name Theories
According to a ~source~, the celebrity couple already had the name, but as always, they wanted to meet the baby before naming him. One wrote: " Bear West?" Tell us", while another guessed, " Bear west? Teddy West does have a nice ring to it.


Saboteurs attack Saudi oil vessels amid Middle East tensions
The Saudi vessels were identified as the VLCC tanker Amjad and crude tanker Al Marzoqah, both owned by Bahri. Gulf stock markets fell on Monday, with Dubai down 2.6 per cent and the Saudi index down over 2 per cent.


Suns' Jackson arrested at Rolling Loud music festival
In his second year in the National Basketball Association this season, Jackson averaged 11.5 points in just more than 25 minutes. After being instructed to sit on a nearby golf cart, Jackson soon stood up and started to walk away.


Dr Watters led a study into seismometer data collected on the Moon by five Apollo lunar landing missions.

Earth isn't the only place that "quakes". Eight quakes occurred close to faults.

"Some of these quakes can be fairly strong, around five on the Richter scale."Some of the quakes also happened during a point in the moon's orbit when it was farthest from Earth, indicating that the tidal stress of Earth's gravity could have contributed to stress on the moon's crust".

He said: "Our analysis gives the first evidence that these faults are still active and likely producing moonquakes today as the Moon continues to gradually cool and shrink".

But unlike the flexible skin on a grape the moon's crust is brittle - causing it to break as the interior shrinks. Additionally, "Establishing a new network of seismometers on the lunar surface should be a priority for human exploration of the Moon, both to learn more about the Moon's interior and to determine how much of a hazard moonquakes present", said co-author Renee Weber, a planetary seismologist at NASA's Marshall Space Flight Center in Huntsville, Alabama. The scarps form when one section of the moon's crust (left-pointing arrows) is pushed up over an adjacent section (right-pointing arrows) as the moon's interior cools and shrinks.

The scarps tend to be around 10yds high and a few miles long - making them resemble a giant stairway on the lunar surface.

The LRO has imaged more than 3,500 fault scarps on the moon since it began operation in 2009. These tracks are evidence of a recent quake because they should be erased relatively quickly, in geologic time scales, by the constant rain of micrometeoroid impacts on the Moon.

"This is exciting as it wasn't clear if the moon had already gone through this period billions of years ago and was tectonically dead, or if it was still active in the present", Schmerr said. For example, the Apollo missions detected about 11,000 moonquakes happening about 500 to 680 miles (800 to 1100 kilometers) beneath the lunar surface.

Recommended:

  • How the National Basketball Association  draft lottery affects the Thunder

    How the National Basketball Association draft lottery affects the Thunder

    There could be some players that could slide to them, and things will change on the draft board between now and late June, too. Here's a look into the eight prospects to watch at the 2019 NBA Draft Combine pertaining to the Chicago Bulls .
    Hardening U.S.-China trade fight sends stocks, yuan reeling

    Hardening U.S.-China trade fight sends stocks, yuan reeling

    Forecasters warned Friday's hikes could disrupt a Chinese recovery that appeared to be gaining traction. The escalating trade war threatens to spoil an expected earnings recovery in the second half, however.
    Doris Day has died aged 97

    Doris Day has died aged 97

    Day was well known for playing innocent, chaste characters, causing some critics to dub her "the World's Oldest Virgin". In fact, she began her career off the silver screen by utilizing the talents of her lovely singing voice.
  • Man indicted for 2015 Christian County triple murder

    Man indicted for 2015 Christian County triple murder

    An American Airlines pilot was removed from a flight in Louisville and charged in connection with a 2015 triple homicide. Martin has been held without bail in Jefferson County, and will be extradited to Christian County for arraignment.
    Generic drug companies, executives slapped with price-fixing lawsuit

    Generic drug companies, executives slapped with price-fixing lawsuit

    The first suit filed in 2016 named 18 corporate defendants and two individual defendants. Other drug companies named in the suit include Sandoz and Pfizer.
    Durian fruit forces evacuation after stink mistaken for gas leak

    Durian fruit forces evacuation after stink mistaken for gas leak

    Firefighters searched the building for the source of the suspected gas leak, ultimately finding a durian fruit was to blame. But the unpleasant smell didn't turn out to be gas at all - and was actually durian, a smelly fruit.
  • Russell Wilson Surprises Mom With Brand New House For Mother's Day

    Mother's Day weekend was extra special for the women in National Football League star Russell Wilson's life. It took Mama Wilson a good minute to realize that this heartfelt moment wasn't a family joke.
    Conor McGregor Sees Charges Against Him Dropped

    Conor McGregor Sees Charges Against Him Dropped

    McGregor's last fight came this past November when he was submitted by UFC lightweight champ Khabib Nurmagomedov. McGregor had originally been charged with robbery by sudden snatching and criminal mischief.
    WH Adviser Kudlow: Americans Are Paying for Tariffs Trump Imposed on China

    WH Adviser Kudlow: Americans Are Paying for Tariffs Trump Imposed on China

    The US and China failed to make progress in the latest round of trade talks that wrapped up in Washington on Friday. Kudlow called those figures "pretty wildly exaggerated" and took a shot at Wallace's "lightning round bullets".
  • 3 dead, 3 missing, 10 injured after Alaskan floatplanes collide mid-air

    All patients were in fair or good condition, according to Marty West, a spokeswoman for PeaceHealth Ketchikan Medical Center. At least 10 others have been hospitalised, according to the US Coast Guard and Federal Aviation Administration officials.

    Explorer reaches deepest spot on Earth in historic dive

    Deep sea dives have proven that areas thought to be remote and desolate are actually filled with life - and apparently, pollution. The final challenge will be to reach the bottom of the Molloy Deep in the Arctic Ocean, which is now scheduled for August 2019.
    Game of Thrones Goes Mad With Bloodiest, Fieriest Episode Ever

    Game of Thrones Goes Mad With Bloodiest, Fieriest Episode Ever

    There was a great sense of grief and an enormous amount of gratitude going on'. Game of Thrones hasn't been too keen on addressing textual prophesying lately.


Popular

Tiger Woods sued over employee's drink-driving death
He lost control of his auto at around 6pm Eastern, and crashed and died in the accident while trying to get home. His blood alcohol content when he crashed his 1999 Corvette was more than three times the legal limit.

Sri Lanka churches hold first Sunday Mass since Easter bombings
The Bangladesh national team narrowly avoided being caught in the New Zealand mosque attacks of March 15 that killed 51 people. Footage shows many Catholics gathered outside the church preparing to go in for Sunday mass.

Stocks, Commodities Tumble as China Strikes Back
USA equities hit record highs just two weeks ago on hopes of a trade deal and a positive first-quarter earnings season. In the middle of the negotiations last week, Trump hiked tariffs on $200 billion of Chinese goods to 25% from 10%.

Five dead after two flightseeing planes crash with cruise ship tourists aboard
At least 10 others have been hospitalised, according to the US Coast Guard and Federal Aviation Administration officials. Ten patients were admitted to PeaceHealth Ketchikan Medical Center, hospital spokeswoman Mischa Chernick told ABC News.

'Avengers: Endgame' Wins Third Weekend At Box Office Over 'Detective Pikachu'
It opened at #2, behind the absolute juggernaut that is Avengers: Endgame , which pulled in $63 million in its third weekend. Whether or not it will pass Avatar ($2.78B) to become the highest-grossing film of all time still remains in question.

Diver breaks record with deepest submarine voyage ever recorded, finds discarded plastic
The pressure at the bottom of the ocean is equal to about 50 jumbo jets piled on top of a person, according to BBC News. It was the third time humans have dived to the deepest point in the ocean, known as Challenger Deep.

Trump says Iran will 'suffer greatly' if United States is provoked
America is deploying an aircraft carrier and B-52 bombers to the Gulf to counter alleged, still-unspecified threats from Tehran. This photo from March 12, 2017, shows a an Iranian oil facility on Kharg Island, on the shore of the Persian Gulf.

Jeremy Kyle show pulled off air after death of guest
ITV said everyone at the show is "shocked and saddened" and "thoughts are are with the family and friends". ITV confirmed in a statement it would not screen the episode in which the guest took part in filming.

New report predicts reversible charging and camera upgrades for the 2019 iPhones
In terms of design, the Bloomberg report says that the iPhone XS and iPhone XS will both be about a "half a milimeter thicker". As for the 2019 iPhone XR, it will switch to a dual camera set up at the rear compared to its existing single lens solution.

$5B laundered in real estate
BC's housing market, she added, "should be used for housing people, not for laundering the proceeds of crime". He said B.C.'s cabinet is now deciding whether to call a public inquiry.