The new one is bigger - about 180 times stronger in energy release compared with last Tuesday's tremor.
In Istanbul, the country's biggest city, hundreds of apartment blocks were literally pulverised by the impact of the tremor.
The ones that survived were wooden houses, since they were less stiff than the concrete ones and able to sway with the tremor.
John Armbruster of Lamont-Doherty Earth Observatory, Columbia University, who's been studying seismic events and fracking in the Youngstown area for months, said Friday that it's "virtually certain" that an injection of fracking wastewater caused the New Year's Eve tremor.
Mike Flood, 45, who lives in Loughborough, said he was awake when the tremor struck.
In the region surrounding Youngstown in northeastern Ohio, where the boom is in full swing, seismic instruments recorded nearly a dozen small quakes in 2011, with a magnitude-4.0 tremor reported December 31.
"That's a message that won't survive in the mass market, " says Ted W. Woehrle, Tremor's chief executive.
The worst damage occurred in Sichuan, which has experienced thousands of aftershocks over the past two weeks, but Sunday's -- which the U.S. Geological Survey measured at a magnitude-6.0 -- was the strongest since a magnitude-5.8 tremor shook the region a day after the initial quake.
The method is approved in the U.S. for tremor and could win clearance for Parkinson's disease later this year.
It is now thought to have measured 9.0, making it the biggest quake since the huge tremor of magnitude 9.2 in Alaska in 1964, whose resulting tsunami struck mostly thinly populated regions and thus killed only 132 people.
The Magnitude 6.3 tremor killed more than 160 people and shattered a city already reeling from a previous seismic event in September.
One measured 6.8 on the Richter scale, a major tremor in its own right.
"Teens are one of the most disempowered groups out there, " says Tremor's Knox.
One tremor of magnitude 2.3 hit the Fylde coast on 1 April while the second of magnitude 1.4 happened on 27 May.
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The 6.6-magnitude tremor sent people fleeing from buildings across Sichuan province, which was devastated by a massive quake five years ago.
The question Turks are asking is why this week's tremor killed so many people.
These days, Grove exhibits few signs of Parkinson's other than an occasional tremor in his right hand.
Mari Roberts from Morfa Nefyn, near Pwllheli, recorded the sound generated by the tremor on her smart phone.
The explosion itself was "decoupled" so as to reduce the chances that even nearby seismic monitoring stations would pick up and recognize the resulting tremor, which registered 2.7 on the Richter scale.
Tremor will launch perhaps 20 U.S. campaigns this year, up from 15 in 2003.
Professor Findley said he had been so impressed with Chris' work that he had asked him to speak at the National Tremor Foundation's annual meeting.
BBC: Tonia Wells has a hereditary hand tremor in both hands.
The subsequent explosion produced a tremor similar to a small earthquake.
Parkinson's is characterised by stiffness, tremor and increasing loss of mobility.
Argentina had held the upper hand in the early exchanges, but suddenly fear ran through the South American ranks like an earth tremor every time Owen took possession.
The explosion produced a tremor similar to a small earthquake.
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