Sonic Booms - Europe - Any Data?

[Hervé]

Well, today 11 July 2014 at ~13:55 - 13:56 (GMT + 2)while browsing around the WideWildWeb, Northern Brittany suffered a strong sonic boom but with no plane to be heard around...

I first "thought" it was and earthquake until I "realized" that only the walls and windows shook, not the ground... totally different sensations which, once one has experienced the ground shifting under one's feet or chair like standing or sitting on a trawler's deck, one never forgets.

Any other witness of that sonic boom?

[Sunny-side-up]

I haven't witnessed that sonic boom here! South-East-London!

How long did it last?

[Hervé]

... about 5 seconds.

It wasn't a single boom but rather a succession of loud rumblings around two main rumblings.

My "think" on it is that it was a meteor disintegrating.

[ZAINA]

There was an earth Quake in the channel Islands ,Guernsey and Jersey .some of the people felt sick just before the earth Quake also headache and a strange smell .no one was hurt .

[Hervé]

Thanks ZAINA and Sunny-side-up!

86 V 2014-07-11 11:54:29.5 __49.09-N 2.50-W __ 2Km 4.5 CHANNEL ISL. REG, UNITED KINGDOM

From: http://www.emsc-csem.org/#2

Répartition de la sismicité relevée par le DASE depuis 1970 dans les 100 km autour du séisme

From: http://www-dase.cea.fr/evenement/eve...115432&lang=fr

From: http://www-dase.cea.fr/evenement/der...aux=cp&lang=fr

[Hervé]

Jersey hit by biggest earthquake in 90 years

The biggest earthquake in Jersey and Guernsey on the Channel Islands for almost 90 years has struck, with a magnitude of 4.2.

Rumbles of sounds were heard as windows rattled when the quake struck at a depth of seven miles around 12 miles west of St Helier at 12.54pm.

Jersey hit by biggest earthquake in 90 years. Credit: Google

The British Geological Survey (BGS) said it was the largest earthquake to have hit the region since a 5.6-magnitude quake on February 17, 1927.A spokesman for the BGS said it was also felt weakly on the South Coast of England, but only caused "very minor" damage.

One local thought a plane had crashed nearby, while another reported that the impact was enough to make them jump and go outside.


Met office heard a 'loud rumble and a crashing sound'

Jersey Met Office has confirmed that the Channel Island earthquake was the "biggest for the past 90 to 100 years".

Spokesman Tony Pallot, who felt the quake, said: "We are based at Jersey Airport on the first floor of arrivals, and we suddenly heard this quite loud rumble, crashing-type sound."

Historical map showing all quakes and tremors within the Channel Islands area. Credit: British Geological society

Tim Phillips, general manager of the Club Hotel and Spa in St Helier, was in a meeting with up to 30 people when the earthquake struck.

He said: "The building shook for about 20 seconds. It wasn't violent, but it was enough to make everyone question what was happening."

[ghostrider]

I don't think the sonic booms are what the ptb say they are ... I'll bet quake monitors recorded nothing ... fracking for oil could be the cause , earth is out of oil and now they shoot water into earth trying to find oil ...

[Hervé]

Ooopss... another one... felt as less strong than the previous one but with two rumblings:

Local time is actually UTC/GMT + 2 hours during the summer (18:26)

[Hervé]

Scottish Highlands are rocked by their biggest earthquake for 30 years

Daily Mail
Sat, 05 Aug 2017 17:22 UTC

The British Geological Survey (BGS) recorded the magnitude 3.8 tremor in the Moidart area just before 3.45pm

The Scottish Highlands experienced the largest earthquake in three decades yesterday, experts have confirmed.

The British Geological Survey (BGS) recorded the magnitude 3.8 tremor in the Moidart area just before 3.45pm.

It was the biggest earthquake in the region since a magnitude 4.1 quake near Oban in September 1986, officials noted.

On the latest event, the BGS stated: 'This earthquake was felt widely across the west of Scotland.'

People in the area shared their experience of the rumble on Twitter.

One wrote: 'Think I just experienced a minor earthquake, here on Ardnamurchan. West coast of Scotland. Anyone else feel it, my kitchen rumbled.'

Another said: 'Just experienced 2 earthquake tremors here in Scotland.

'Never felt anything like that, like the ground beneath us was exploding. Terrifying!'

SNP MP Margaret Ferrier also commented on the tremor, saying: 'Largest earthquake in the region since 1986.'

In recent years, there was a magnitude 3.5 earthquake in Glenuig in January 2011.

Scotland's largest earthquake was a magnitude 5.2 event in Argyll in 1880, BGS said.

Source: Press Association

[Spiral]

You could ask why there aren't more quakes there tbh

The Great Glen Fault is a long strike-slip fault that runs through its namesake the Great Glen in Scotland.



Aligned northeast to southwest, the Great Glen Fault extends further southwest in a straight line through Loch Linnhe and the Firth of Lorne, and then on into northwestern Ireland, directly through Lough Foyle, Donegal Bay and Clew Bay. To the northeast the fault connects to the Walls Boundary Fault and the associated Melby Fault and Nesting Fault, before becoming obscured by the effects of Mesozoic rifting to the north of Shetland.
The fault continues on the North American side of the North Atlantic Ocean, but is no longer part of a contiguous fault, as the complete fault was broken when the Mid-Atlantic Ridge formed 200 million years ago. The North American side of the fault runs through the length of northwestern Newfoundland, Canada, as the Cabot Fault (Long Range Fault) and on into the Gulf of St. Lawrence.[1] It is at least 300 miles (480 km) long.

https://en.wikipedia.org/wiki/Great_Glen_Fault

[Hervé]

Posted by Spiral (here)
You could ask why there aren't more quakes there tbh
[...]

Because it's an ancient transform fault that got its dynamic and kinetic components switched off and then truncated >200 million years ago and no longer active compared to a similar, current and active, transform fault that's running along California AKA San Andreas.

The fossilized subduction zone connected to the fossilized Great Glen Fault can be found in Southern Brittany, and in Newfoundland as well, as indicated by the occurrence of "Blue Schists."

[Noelle]

Though this is not directly related, I believe I just heard a sonic boom on the Space Coast. I live less than 20 miles from NASA's Kennedy Space Center, where, according to a NASA press release, they are doing sonic boom testing. The tests kicked off yesterday.

Quoting the NASA release: "The historic spaceport will play host to the second series of Sonic Booms in Atmospheric Turbulence flights, or SonicBAT, continuing from 2016's successful supersonic research flights flown at Edwards Air Force Base in California. SonicBAT helps NASA researchers better understand how low-altitude atmospheric turbulence affects sonic booms, which are produced when an aircraft flies at supersonic speeds, or faster than the speed of sound. The upcoming flight series is a key initiative in validating tools and models that will be used for the development of future quiet supersonic aircraft, which will produce a soft thump in place of the louder sonic boom."

NASA is using a F-18 for the tests.

[Foxie Loxie]

During the 1800's there were loud "booms" heard in upstate NY called the Seneca Guns! No planes back then!!

[Noelle]

Posted by Foxie Loxie (here)
During the 1800's there were loud "booms" heard in upstate NY called the Seneca Guns! No planes back then!!

That's wild. I will have to look it up.