NASA probe detects likely ‘marsquake’ — an interplanetary first

A life-size model of the spaceship Insight, NASA's first robotic lander dedicated to studying the deep interior of Mars, is shown at Jet Propulsion Laboratory (JPL) in Pasadena, California, U.S. November 26, 2018. (REUTERS)
Updated 24 April 2019
0

NASA probe detects likely ‘marsquake’ — an interplanetary first

  • A more distant quake would yield greater information about Mars’ interior because seismic waves would “penetrate deeper into the planet before they come back up to the seismometer,” he said

CALIFORNIA: NASA’s robotic probe InSight has detected and measured what scientists believe to be a “marsquake,” marking the first time a likely seismological tremor has been recorded on another planet, the Jet Propulsion Laboratory in California reported on Tuesday.
The breakthrough came nearly five months after InSight, the first spacecraft designed specifically to study the deep interior of a distant world, touched down on the surface of Mars to begin its two-year seismological mission on the red planet.
The faint rumble characterized by JPL scientists as a likely marsquake, roughly equal to a 2.5 magnitude earthquake, was recorded on April 6 — the lander’s 128th Martian day, or sol.
It was detected by InSight’s French-built seismometer, an instrument sensitive enough to measure a seismic wave just one-half the radius of a hydrogen atom.
“We’ve been collecting background noise up until now, but this first event officially kicks off a new field: Martian seismology,” InSight principal investigator Bruce Banerdt said in a news release.
Scientists are still examining the data to conclusively determine the precise cause of the signal, but the trembling appeared to have originated from inside the planet, as opposed to being caused by forces above the surface, such as wind.
“The high frequency level and broad band is very similar to what we get from a rupture process. So we are very confident that this is a marsquake,” Philippe Lognonné, a geophysics and planetary science professor at University Paris Diderot in France and lead researcher for InSight’s seismometer, said in an email.
Still, a tremor so faint in Southern California would be virtually lost among the dozens of small seismic crackles that occur there every day.
“Our informed guesswork is that this a very small event that’s relatively close, maybe from 50 to 100 kilometers away” from the lander, Banerdt told Reuters by telephone.
A more distant quake would yield greater information about Mars’ interior because seismic waves would “penetrate deeper into the planet before they come back up to the seismometer,” he said.
 
The size and duration of the marsquake also fit the profile of some of the thousands of moonquakes detected on the lunar surface between 1969 and 1977 by seismometers installed there by NASA’s Apollo missions, said Lori Glaze, planetary science division director at NASA headquarters in Washington.
The lunar and Martian surfaces are extremely quiet compared with Earth, which experiences constant low-level seismic noise from oceans and weather as well as quakes that occur along subterranean fault lines created by shifting tectonic plates in the planet’s crust.
Mars and the moon lack tectonic plates. Their seismic activity is instead driven by a cooling and contracting process that causes stress to build up and become strong enough to rupture the crust.
Three other apparent seismic signals were picked up by InSight on March 14, April 10 and April 11 but were even smaller and more ambiguous in origin, leaving scientists less certain they were actual marsquakes.
Lognonné said he expected InSight to eventually detect quakes 50 to 100 times larger than the April 6 tremor.


EU adopts powers to respond to cyberattacks

Updated 17 May 2019
0

EU adopts powers to respond to cyberattacks

  • The EU can now impose asset freezes and travel bans on individuals, firms and state bodies implicated in cyberattacks
  • Sanctions will be considered if a cyberattack is determined to have had a ‘significant impact’ on its target

BRUSSELS: The European Union on Friday adopted powers to punish those outside the bloc who launch cyberattacks that cripple hospitals and banks, sway elections and steal company secrets or funds.
EU ministers meeting in Brussels said the 28-nation group would now, for the first time, be able to impose asset freezes and travel bans on individuals, firms and state bodies implicated in such attacks.
“The Council (of EU countries) established a framework which allows the EU to impose targeted restrictive measures to deter and respond to cyberattacks,” it said in a statement.
It added that sanctions will be considered if a cyberattack is determined to have had a “significant impact” on its target.
The goal is to bolster the security of EU institutions, firms and individuals against what Britain called an increase in the “scale and severity” of cyberattacks globally.
“This is decisive action to deter future cyberattacks,” British Foreign Secretary Jeremy Hunt said after Britain and its EU partners drafted the measures.
“For too long now, hostile actors have been threatening the EU’s security through disrupting critical infrastructure, attempts to undermine democracy and stealing commercial secrets and money running to billions of euros,” Hunt said.
“Our message to governments, regimes and criminal gangs prepared to carry out cyberattacks is clear,” Britain’s top diplomat added.
“Together, the international community will take all necessary steps to uphold the rule of law and the rules based international system which keeps our societies safe.”
The British government has pledged to continue close cooperation with the EU after it leaves the bloc in line with the 2016 referendum.
Under the sanctions regime, diplomats said, the 28 EU countries would have to vote unanimously to impose sanctions after meeting a legal threshold of significant impact.
For example, countries would look at the scope and severity of disruption to economic and other activities, essential services, critical state functions, public order or public safety, diplomats said.
They would examine the number of people and EU countries affected and determine how much money, intellectual property and data have been stolen.
EU diplomats told reporters it could also cover the hacking of European elections by a third party or country. Elections for a new European Parliament take place May 23-26.
In line with US intelligence assessments, EU officials highlight in particular the threat of disinformation and election hacking from Russia.
EU countries would also study how much the perpetrator has gained through such action.
A Dutch diplomat told reporters that the powers amount to a “big step forward” toward building a more secure cyberspace.
European leaders in October had called for a regime to impose sanctions against cyberattacks.
US and European police said Thursday they have smashed a huge international cybercrime network that used Russian malware to steal 100 million dollars from tens of thousands of victims worldwide.
EU diplomats said the bloc will now start drawing up a blacklist for potential sanctions in cyberattack cases.
A number of powerful people close to Russian President Vladimir Putin appear on a blacklist of 164 Russians and Ukrainians that was established after Moscow’s annexation of the Crimean peninsula in 2014.
Those blacklisted are under travel bans and asset freezes just like those that would be imposed on those implicated in cyberattacks.