More than 50000 dead, many trapped as major earthquake strikes Turkiye, Syria,..,.

[RayKalm]

https://twitter.com/x/status/1623676258700742658

 

[hembo]

https://twitter.com/x/status/1623933590638841856

https://twitter.com/x/status/1623918441823617025

 

[hembo]

https://twitter.com/x/status/1623688763590451200

 

[ghazi52]

,..,.,
Tons of Relief Package was dispatched today using Pakistan Air Force IL-78 and PIA Boeing-777. After necessary preparation of required material whose requirement was coordinated with Turkish Embassy now the Heavy Lifters are in action.

 

[dBSPL]

Turkiye disaster zones latest report:

19,875 citizens lost their lives,
79,717 citizens were injured.

 

[HAIDER]

https://twitter.com/x/status/1623788748025565186

The PGA (maximum ground acceleration) of the first earthquake in the east-west direction was calculated to have reached 2g force.

Never seen such an impact before... was it earth or some concrete platform?

 

[dBSPL]

Never seen such an impact before... was it earth or some concrete platform?

I'm afraid, yes. After the first 15 seconds of the earthquake, it is seen that the asphalt road starts to tear, bu after the first 20 seconds of the earthquake(the last two seconds in the video, then cuts out) , it reaches an incredible PGA that it is not possible to stand even if you are on the ground. The earthquake was so strong that the earth moved 4 meters. In Hatay, nearly 10-meter deep valley formed and some hills were flattened.

 

[HAIDER]

I'm afraid, yes. After the first 15 seconds of the earthquake, it is seen that the asphalt road starts to tear, bu after the first 20 seconds of the earthquake(the last two seconds in the video, then cuts out) , it reaches an incredible PGA that it is not possible to stand even if you are on the ground. The earthquake was so strong that the earth moved 4 meters. In Hatay, nearly 10-meter deep valley formed and some hills were flattened.

This does not seem 7.5-7.8 ..it looks lot more than that. I have experinced 6.1 in my life.

Magnitude 7.5 earthquake
Affected countries: Cyprus, Türkiye, Jordan, Lebanon, Syria, Iraq, Georgia, and Armenia
12 miles from Elbistan/Kahramanmaraş, Türkiye · Feb 6, 4:24 AM

https://earthquake.usgs.gov/earthquakes/eventpage/us6000jlqa/map

 

[dBSPL]

This does not seem 7.5-7.8 ..it looks lot more than that. I have experinced 6.1 in my life.

Magnitude 7.5 earthquake
Affected countries: Cyprus, Türkiye, Jordan, Lebanon, Syria, Iraq, Georgia, and Armenia
12 miles from Elbistan/Kahramanmaraş, Türkiye · Feb 6, 4:24 AM
View attachment 915985

https://earthquake.usgs.gov/earthquakes/eventpage/us6000jlqa/map

For a very simple example, an M7 earthquake is 10 times stronger than an M6 earthquake. But this was not the problem with the Kahramanmaraş earthquake. The earthquake occurred at a depth of only 2000 meters, right in the middle of the region where millions of people live. And as if that wasn't enough, 10 hours after this 200-kilometer fault ruptured, another neighboring giant fault also ruptured. The region has been experiencing an earthquake storm for 5 days and the number of aftershocks felt has exceeded 1300. This region is the intersection of Eurasian and Arabian tectonic structures and we know historically that many civilizations were destroyed here by earthquakes in ancient times. With normal tectonic movements, we were shifting 2 centimeters every year, but with these twin earthquakes we shifted 4 meters to the west.

 

[HAIDER]

For a very simple example, an M7 earthquake is 10 times stronger than an M6 earthquake. But this was not the problem with the Kahramanmaraş earthquake. The earthquake occurred at a depth of only 2000 meters, right in the middle of the region where millions of people live. And as if that wasn't enough, 10 hours after this 200-kilometer fault ruptured, another neighboring giant fault also ruptured. The region has been experiencing an earthquake storm for 5 days and the number of aftershocks felt has exceeded 1300. This region is the intersection of Eurasian and Arabian tectonic structures and we know historically that many civilizations were destroyed here by earthquakes in ancient times. With normal tectonic movements, we were shifting 2 centimeters every year, but with these twin earthquakes we shifted 4 meters to the west.

I think if shocks have been going on for the last few weeks then govt must have evac a good number and this casualty should be low...even people never leave their homes ...

Good info .

What triggered the Turkey quakes? Why was the second so big? Key questions, answered.​

Two powerful earthquakes, 7.8 and 7.5 magnitudes, have been followed by dozens of damaging aftershocks​

By Matthew Cappucci
February 7, 2023 at 2:04 p.m. EST
Rescuers and civilians look for survivors under the rubble of collapsed buildings in Kahramanmaras, southern Turkey, a day after a 7.8-magnitude earthquake struck the country's southeast, on Tuesday. (Adem Altan/AFP/Getty Images)

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At least 7,000 people have been killed and countless others remain missing after a pair of exceptionally destructive earthquakes shook Turkey and a broad swath of the Middle East. Particularly hard hit was Aleppo in northern Syria, a nation embroiled in a brutal civil war that is now facing compounding disasters.


Amid the lengthy rescue, recovery and rebuilding process that lies ahead, many have raised questions regarding the impetus of the earthquakes, how long aftershocks can be expected and just how bad the sequence was.
We’ve broken down seven things to know when it comes to the earthquake sequences.

How long did the 7.8-magnitude earthquake last?​

Earthquake surface waves are like ocean waves — even long after you drop a stone in a body of water to create a disturbance, the waves propagate outward. The same is true with an earthquake.


The actual slip that triggered the 7.8-magnitude quake occurred over a period of about 75 seconds, according to the U.S. Geological Survey. For most people in Turkey, that quake probably resulted in one to two minutes of shaking.

Earthquake waves rippled around the world​

The shaking from Turkey’s earthquakes was felt by seismometers across the world.
But that’s perfectly normal. Seismometers within the Global Seismic Network are sensitive enough that they can detect the equivalent of a dime placed under one corner of North America.
Scientists can visualize the progress of earthquake waves by producing what’s called a record section. If they take plots from seismometers around the world, as shown below, and stack them atop each other (with distance on the vertical axis and time going from left to right), they can see how the earthquake waves travel.
A “record section” produced by compiling seismographs from around the world. (USGS)
So, yes — even in Canada, Alaska, Mexico and Australia, waves from the Turkish earthquakes were registered by ultrasensitive seismometers.

Was the second quake an aftershock? Why was it so big?​

It’s typical for aftershocks to occur for weeks or months after the main earthquake in a sequence. They tend to diminish in intensity and frequency with time.


There’s a 1 in 15 chance that a given earthquake is a “foreshock” preceding a bigger quake, according to USGS. That’s unlikely in this case, but it does occasionally happen. (Consider the July 4-6, 2019, Ridgecrest, Calif., earthquake sequence, when a 6.4-magnitude main shock was followed by a 7.1 two days later.)
About nine hours after Turkey’s initial 7.8-magnitude earthquake, which struck near Nurdagi at 4:15 a.m. local time Monday, a second potent quake ― a shallow 7.5-magnitude temblor — occurred 60 miles to the north. Ordinarily this could easily be considered an aftershock (although one of unusual intensity), but it’s more complicated in this case. Why?
If we look at a map of seismicity in the region and annotate both our 7.8-magnitude and subsequent 7.5 quakes, we notice two distinct clusters of activity:
An annotated map of seismicity in the greater Turkey region. (USGS)
That means the 7.5-magnitude quake was not an aftershock on the same fault, but rather a secondary main shock on a different fault triggered by the initial 7.8-magnitude quake to the south.


“There is room for debate; I might consider the second earthquake a second mainshock, given its size,” Judith Hubbard, a seismologist and researcher, wrote in a message to The Post. “Aftershocks don’t have to be on the original fault, but as the second earthquake was close to the first in size, it stands out and is not a typical aftershock.”
Turkey is highly susceptible to earthquakes — a result of sitting on a junction of three tectonic plates, making it a region of high seismic unrest. Still, both quakes stand out for their intensity.
“Since 1970, only three earthquakes of magnitude 6 or larger have been registered in this region,” the USGS wrote. “The largest was a magnitude 6.7 that occurred Jan. 24, 2020.”

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What triggered the first earthquake?​

After each earthquake, the USGS publishes information on the mechanism that triggered an earthquake. It concluded that the 7.8 quake was triggered by two faults moving laterally against each other, or a strike slip. In this case, it was a “left lateral” strike slip, since both masses of Earth’s crust moved left in relation to the other.
The earthquake “beach ball” diagram below represents a view of the ground motions and the forces involved when looking down from above.
An annotated depiction of the focal mechanism that instigated a 7.8-magnitude earthquake in Turkey. (USGS)

It probably occurred on the East Anatolian Fault​

In a news article, the USGS wrote that all of the related earthquake activity was “occurring within the East Anatolian fault system,” which is shown on the map below:

Very strong shaking
Strong
Moderate
Light
Aftershocks above 5-magnitude as of 7.30 am Eastern
Direction of plate movement
RUSSIA
Black Sea
GEORGIA
FAULT LINES
Anatolian Plate
7.5-magnitude
earthquake
IRAN
TURKEY
7.8-magnitude
earthquake
CYPRUS
SYRIA
LEBANON
Mediterranean Sea
IRAQ
Arabian Plate
ISRAEL
African Plate
JORDAN
100 MILES
Source: Natural Earth, USGS
SAMUEL GRANADOS / THE WASHINGTON POST
Along the East Anatolian Fault, the Anatolian and Arabian plates slide and chafe against each other. That results in ever-building stress, which is occasionally released in catastrophic slips. (Farther to the northeast, the Arabian Plate collides with the Eurasian Plate at the Bitlis-Zagros Fold and Thrust Belt, forming the Zagreb, Alborz and Caucasus mountains.)
In the case of the East Anatolian Fault, the Arabian Plate is moving north-northwest at about 15 millimeters (0.59 inches) per year, while the Anatolian Plate slides west-southwest at 22 millimeters (0.87 inches) per year:
The two plates are moving at about 15 millimeters per year relative to each other.

The two masses of land slid approximately 10 feet past each other​

According to the USGS, the two masses of land slid up to 10 to 12 feet (roughly 3 to 3.5 meters) past each other during the “slip” of the 7.8-magnitude quake.


The greatest slip occurred about 50 kilometers, or about 30 miles, from the epicenter.
How much of the fault ruptured? The USGS indicates a stretch a little over 250 kilometers long, so roughly around 150 miles, slipped.
The USGS's map depicting the length of the fault that ruptured. (USGS)
However, different modeling from the USGS indicates that the quake may have ruptured a shorter segment of the fault but featured a greater rupture along the “dip,” or the vertical interface of the two masses of crust.
The area of the slip, as modeled by USGS, was about 60 miles long and 45 miles wide.
The ground also moved up to about 40 centimeters per second, or 15 to 16 inches per second. That doesn’t sound like much, but consider nudging a home, office building or any other structure by that much — all in a series of disjointed rolls and back-and-forth jerks.

At peak, the ground accelerated at 40 percent of one “g,” or the acceleration due to gravity. If you jump into the air, you are pulled back to Earth by the acceleration due to gravity. Imagine 40 percent of that acceleration enacting a force on the entire landscape. That illustrates the power of the earthquake.

Hundreds of years of pent-up stress was released​

Figuring out just how long this earthquake has been in the works can be estimated using simple math.

Let’s assume the quake did occur along the East Anatolian Fault (which can’t be 100 percent confirmed but is the likely location). One can divide the total magnitude of the slip (10 feet) by the yearly movement of the plates relative to each other (15 millimeters, or 0.6 inches). That would mean 200 years of stress-buildup.
That could be a conservative estimate. Hubbard said on Twitter that the stress could have built over as much as 300 years.

 

[dBSPL]

https://twitter.com/x/status/1624126439300730897

the canyon formed after the earthquake. The two sides you see in the video were one land before the earthquake.

edit:

In some dormant, volcanic mountains, different reports started coming in.

https://twitter.com/x/status/1624139793952083979

 

[ghazi52]

.,.,

https://twitter.com/x/status/1624113270012379146

 

[ghazi52]

,..,,.,

Miracle rescues as Turkiye-Syria quake toll passes 25,000​

AFP
February 11, 2023

This satellite image obtained on February 10, 2023, courtesy of Planet Labs, Inc. shows a SkySat image captured on April 3, 2021, showing the city of Kahramanmaras, southeastern Turkey. — AFP

Residents walk along destroyed buildings, as search and rescue operations continue days after a deadly earthquake hit Turkey and Syria, in the town of Jindayris, in the rebel-held part of Syria’s Aleppo province, on February 10. — AFP

This aerial view shows collapsed buildings during the ongoing rescue operation in Kahramanmaras, the epicentre of the first 7.8-magnitude tremor five days ago, in southeastern Turkey, on February 10. — AFP

This satellite image obtained on February 10, 2023, courtesy of Planet Labs, Inc. shows a SkySat image captured on February 9, 2023, showing the city of Kahramanmaras after a 7.8-magnitude earthquake struck southeastern Turkey earlier in the week. — AFP

This satellite image obtained on February 10, 2023, courtesy of Planet Labs, Inc. shows a SkySat image captured on April 3, 2021, showing the city of Kahramanmaras, southeastern Turkey. — AFP


Rescuers pulled a two-month-old baby and an elderly woman from the rubble on Saturday, five days after an earthquake devastated Turkiye and Syria, leaving more than 25,000 dead.

Tens of thousands of local and international rescue workers are still scouring through flattened neighbourhoods despite freezing weather that has compounded the misery of millions now in desperate need of aid.

However, Austrian soldiers and German rescue workers called off their searches in southern Hatay, citing a difficult security situation and clashes between local groups, without giving further details.

In the midst of overwhelming destruction and despair, miraculous tales of survival continue to emerge.

“Is the world there?” asked 70-year-old Menekse Tabak as she was pulled out from the rubble in the southern city of Kahramanmaras — the epicentre of Monday’s 7.8-magnitude tremor — to applause and cries praising God, according to a video shared on state broadcaster TRT Haber.

In the city of Antakya, a two-month-old baby was found alive 128 hours after the quake, state news agency Anadolu reported.

A two-year-old girl, a six-month pregnant woman, plus a four-year-old and her father, were among those rescued five days after the quake, Turkish media reported.

Meanwhile, in southern Turkiye, families clutched each other in grief at a cotton field transformed into a cemetery, with an endless stream of bodies arriving for swift burial.

Compounding the anguish, the United Nations has warned that at least 870,000 people urgently need hot meals across Turkiye and Syria. In Syria alone, up to 5.3 million people may have been made homeless.
A border crossing between Armenia and Turkiye opened for the first time in 35 years on Saturday to allow five trucks carrying food and water into the quake-hit region.

 

[ghazi52]

Via road...

 

[dBSPL]

https://twitter.com/x/status/1624484026084982784

A baby rescued 128 hours after the earthquake.