"Ahem."

The cold air couldn't stop coughing, and when he raised his head again to look at the live broadcast room, he suddenly found that the live broadcast room, which was originally full of barrages, suddenly became refreshing, like a pine tree shaking off the snow.

Strange, why is no one talking all of a sudden?

It's been a long time.

[, the old party is alive! ] 】

[It's over, I just prayed that my roommate will be single for a lifetime in exchange for the peace of God, and now my roommate will be single for a lifetime]

[Roommate: ? 】

[Roommate: I thank you]

[Awesome, the avalanche actually survived! ] Who else! 】

[It's over, I just screamed too loudly, and my mom asked me why I didn't sleep yet. 】

[Awesome, brother, you are peerless! ] 】

"Survived! Survived! They're okay, oh my God, they're okay! ”

In the Arctic Circle, Erwan hugged Lennon's shoulders tightly, jumping and jumping.

"Yes, yes, God will bless the well-wishers." Lennon touched his beard and laughed.

Etienne ran around the open lake and shouted, "They're amazing, they're amazing!" Oh roar! ”

In the bright building, the staff on duty immediately contacted Li Yawen and told the other party the good news as soon as possible.

"Boss, Fang Shen is on the air!"

In the living room, Li Yawen, who saw Bi Fang safe and sound, clenched his fists and hammered the table: "Damn, I knew that this kid was not so easy to hang." Fuck, my blood pressure is all going up. ”

Opening the drawer and taking the blood pressure medicine with boiling water, Yao Xuehui sat on the chair and breathed a long sigh of relief, and the woman on the side stroked his chest and helped him smooth his breath.

"This rebel, who does something out of tune all day long, has this kung fu and he is better than this when he advertises his brand! I'm. ”

"Oh, it's okay, it's okay, it's just that you have a lot of things, you are angry when the child has something, and you are angry when you have nothing to do, you are afraid that it is not made by balloons."

Inside the brightly lit building, the sound of broken objects and low roars rang out from time to time.

"Director, what's wrong? Equity funds have fallen? Or do you find out that the child is not your own? "It's exactly the same situation, but it's replaced by Xiao B asking Xiao A.

Xiao A looked at Bi Fang, who scanned the environment on the mobile phone screen, and smiled: "It's probably because the business plan that just joined forces went bankrupt before it started, but what does this have to do with us, we are just workers, and you can't get it before the company earns, and the company will not go bankrupt and lay off employees if it loses." ”

Xiao B was stunned for a moment, as if he had been opened to the second pulse of Ren Du, slowly put down the documents in his hand, and picked up the mug on the side.

The smashing continued, and Little A and Little B listened to the noise in the office, looked up at the sky with coffee in hand, and spit out a mouthful of hot steam after taking a sip of coffee.

Every time he touches a fish, a boss loses his dream.

[Lin Chang gave the anchor spaceship *10 - pay me for sleep!] 】

[It's a dead date, why doesn't the second big guy on the list sleep in the middle of the night, the reason is because of him! ] 】

[Anyway, what's going on in this cave!] Why is there a cave? 】

[Fang Shen, you finally don't pretend, urban superpower! ] 】

[I have a showdown, I don't pretend, take out the transformer, that's right, I'm the light! ] 】

The audience scanned around with Bi Fang's perspective and found that the space they were in was not small, almost comparable to a small bus.

A mouthful of cold mist came out, Bi Fang sat on the ground and took a deep breath and explained: "Just now, we encountered an avalanche, except for the missing two Sherpa guides, the rest of the team is in stable physical condition, except for some abrasions. ”

What can fly without wings? What can be fought without fists? What no eyes can see?

It is a riddle that has been circulating since medieval Europe.

The mystery is an avalanche.

Avalanche, also known as the White Reaper.

When an avalanche occurs, the snow is constantly falling down the slope of the mountain by gravity from the high part of the mountain, and the impact is extremely fast and powerful, often leveling the ground everywhere it goes.

According to statistics, avalanches are the biggest natural risk of fatalities in winter outdoor sports.

Bi Fang sat on the snow wall, and was extremely glad that there had been many avalanches on Mount Everest, and the Khumbu Glacier was the hardest hit area, and the time period of occurrence was almost always in the early hours of the morning. This is mainly related to the topography of the Khumbu Glacier.

When the cohesive force inside the snow on the hillside cannot resist the gravitational "pull" it is subjected to, it slides downward, causing a large amount of snow to collapse. The Tianshan Snow Avalanche Research Station of the Chinese Academy of Sciences has found that on the slope of a mountain with a slope of about 40 degrees, the possibility of avalanche is the greatest, which coincides with the topography of the Khumbu Glacier.

Once in danger, waiting for rescue is almost impossible, and when you do, your body has already turned into a part of the glacier, buried here for a long time, and maybe it will be resurfaced a century later with the movement of the glacier, as Bi Fang told before.

The audience on the screen almost couldn't believe that it was the Eagle Head Ice Slope that guarded the people of Bi Fang.

[The manifestation of the mountain god, this must be the manifestation of the mountain god! ] 】

[Damn, this is too awesome]

[Is it true that good people have good rewards? 】

"I've demonstrated avalanche survival before, but I didn't expect it to happen, and there are usually three causes of avalanche fatality – physical trauma, suffocation, and hypothermia. There are also corresponding life-saving methods, one is to escape before the avalanche stops, the second is to prevent all people from being buried, and the third is to reduce the time for the trapped people to be buried.

Under normal circumstances, avalanches do not kill people, and the cause of death is low temperature and lack of oxygen after being buried. But snow also contains life-saving oxygen, and ideally, burying your arms to create a breathing space is an effective way to prolong survival. If I had broadcast it earlier, you would have been able to see that this is what the lord did just now, a very standard way to save himself. ”

Bi Fang crossed his hands against his chest, buried suffocation is not the same as ordinary suffocation, once it is buried tightly, there is no certain escape technique to expand the space, the lungs are almost unable to expand, many avalanche victims are suffocated not because there is no oxygen, but the lungs can not expand.

"We are very fortunate that there are many types of avalanches depending on the physical characteristics of the snow cover and the location of the snow breaks, but there are basically two types of avalanches, dry avalanches and wet avalanches."

Bi Fang grabbed a handful of snow from the snow wall on the side and squeezed it with his hand, and the miraculous thing was that the snow did not gather into a clump, but was still powdery and scattered from his fingers, as if it was dry flour.

"What we encountered was a dry avalanche, and our friends in the south may not have felt it, but the north must have encountered this situation, the snow was as dry as flour, and it was impossible to gather, let alone have a snowball fight, because the temperature in the north was too low in winter, and the air was dry, and the dry avalanche was similar."

"When the moisture content of the snow is less than 1%, it is generally considered to be a dry avalanche. When a dry avalanche occurs, a large number of snow particles collide with each other during movement due to the low viscosity of the snow, which will be suspended in the air to form white smoke. This avalanche will be spectacular from above, and it's too dark today, but you should be able to see it clearly in the night market mode. ”

Indeed, many viewers nodded secretly, because of the altitude, the drone did not fly high, and it was like facing an avalanche.

The rolling snow waves stretched for hundreds of meters, and the sky was covered with white smoke and dust, almost obscuring the sky.

"High-velocity smoke compresses the surrounding air, creating a powerful wave of air that destroys everything in its path. When the damage of the air wave has passed, the real avalanche follows, and the snow covers everything. ”

[So what the hell is this lucky, laughing and crying]

[Where there is dry, there is wet, I guess it must be a wet avalanche that is more lethal! 】

"That's right." Bi Fang smiled.

"When the moisture content exceeds 1%, it is a wet avalanche, which mainly occurs in the temperature rise stage, when the temperature rises, the snow melts, and the snowmelt water will infiltrate into the snow layer, which will increase the water content of the snow layer. The infiltrated snowmelt water is often easy to freeze into ice crystals, changing the shape of the particles inside the snow, and the high temperature induces local collapse on the surface of the snow, and the collapsed snow will slide down the slope at a faster and faster speed, and the snow will gradually form a snowball along the way.

As a result, there are often a lot of snowballs on the slopes before avalanches occur.

Eventually, a large number of accumulated snowballs break the calm slide of the snow surface, causing avalanches. During the slide, the snowball increases in size and carries melted soil and rocks on the surface, which is much more destructive than a dry avalanche. ”

Bi Fang paused, exchanging air a few times before continuing.

"You know how dangerous this avalanche is, and the rocks that are swept into them are no less powerful than the rocks that are blown up in a storm...... You get the idea. ”