Live Wilderness Adventure

Chapter 650 No food for three days

The sun rises and the spirits rise.

Feeling the rise in temperature, Bi Fang felt that the cells in his whole body stretched out.

There are white undulations in the distance, indicating that I am heading in the right direction, that is, I am heading towards the interior of Greenland.

Because there can be no undulations on the ice sheet, it must be mountains.

If you choose a goal as the direction of travel, after reaching that goal, you need to establish a new goal.

In the polar environment, it's very empty and there are almost no features. You have to remember a certain feature you can see on the horizontal plane, but that doesn't mean you can get to that place quickly.

Wangshan runs to death, the old saying warns of this.

You saw the mountain, but the horses ran to death, and they might not be able to reach it.

It may be as far as 100 kilometers away. The captain on the cruise ship shared with me his experience. Once he was walking on the ice sheet of Greenland and saw a black object in the horizontal line of sight. After a few weeks During their trip, they passed icebergs and coastlines and saw nothing, and that was the first time they saw a small black dot.

The captain at the time was very excited about the different object he saw. He set up camp and talked eagerly about the mountain that he could reach tomorrow morning. After two days of walking, it was still there!

[Don't say such embarrassing things, okay? 】

[Ah, it's the captain! 】

[Is the captain also watching the live broadcast? 】

【Aren't you afraid of hitting an iceberg if you don't stare at the boat】

【Honey, I have a first mate and a second mate, that's the real guy who does the work】

【good guy】

[polite mate]

Bi Fang drank the last sip of water, squatted down and began to dig ice.

I drank four pots of water these days, about two pots a day, and I didn't drink too much. Drinking water is a part of metabolism and will take away your body's energy, so when it's not extreme, just keep Moisture is enough.

One of the things I feel is very obvious, that is, the salty taste in the water is becoming less and less obvious, now here.

Bi Fang chiseled off a piece of ice, put it in his mouth, and then spat it out. He said with a smile, There is basically no salty taste, which means that the age of the ice here is quite long.

The audience was a little surprised, what is the reason for this?

[I always thought ice was fresh water, why is there salty ice? 】

[Indeed, I just remember learning before that the icebergs at the north and south poles are all fresh water, and there are still many]

The glaciers in the Antarctic and Arctic are the world's largest freshwater reservoir, storing 70% of the world's freshwater.

This is probably everyone's impression, is fresh water salty?

You don't understand the real reason why glaciers are fresh water. The icebergs in the north and south poles are indeed fresh water, but the reasons for their formation are different, which also leads to some other differences.

The Antarctic region is a continent. The specific heat capacity of land is much smaller than that of water, and the ability to store heat is weak. The heat obtained in summer is quickly radiated away.

Bi Fang poured crushed ice into the jug and explained.

The annual average temperature there is about -56°C. At low temperatures, the water produced through the water cycle mainly exists in the form of rain or snow, and the freezing point of water is 0°C, which ensures that the snow will not melt all year round at low temperatures.

Even in summer, part of the snow melts and is quickly frozen into ice. Therefore, on the ocean around the Antarctic continent, a large number of ice blocks are floating, forming huge icebergs.

This audience is well understood.

The fresh water in Antarctica turns into snow after natural evaporation, and then dissolves into ice. The whole process has not been in contact with any salt, and it naturally becomes a freshwater iceberg.

In contrast, the Arctic region has a small land area, and most of it is the Arctic Ocean. Due to the large heat capacity of seawater, it can absorb more heat and dissipate heat slowly, so the annual average temperature there is higher than that in the Antarctic. In addition, Warm current, around 8°C.

The freezing point of seawater is lowered by various salts. At the same time, the solubility of seawater at low temperatures will also decrease. High-temperature seawater has a higher salt content. When seawater refreezes, the salt will transfer to relatively high-temperature seawater. So the seawater that freezes becomes 'freshwater', and the salt crystallizes out, causing the salt content to drop in the glaciers that form.

As a result, there are fewer glaciers in the Arctic than in the Antarctic, and most of them are stored in Greenland.

The former is natural distillation directly into fresh water, which is a direct qualitative change, but the latter is the precipitation of salt for various reasons, which is a quantitative change caused by a qualitative change. Since it is a quantitative change, there will naturally be a process. We walked here from the beach. It is an experience. This process of quantitative change.

The Eskimos living in the Arctic ice sheet rely on this method to obtain a certain amount of fresh water resources, which also leads to higher salt content in the frozen sea or the ocean near the sea ice.

At my feet, the qualitative change has been completely completed, the salt has completely precipitated, and it has become real fresh water. The salt water I drank before can be regarded as salt water with a little salt. Although it is salt water, the salinity is much lower than that of sea water. It is completely ok For hydration.

[Strange knowledge has increased. 】

[I feel like I have learned something amazing again]

【The geography is amazing】

In fact, a very interesting phenomenon will appear when seawater freezes, that is, death icicles.

The temperature at the north and south poles is very low. Sometimes the temperature of the sea surface will drop to a low temperature of tens of degrees below zero. At this time, the sea surface will start to freeze. As the sea surface temperature drops, the density of the seawater below will increase after the salt is precipitated, resulting in An icicle continues to extend downwards, and the surrounding seawater will not freeze due to changes in density after reaching the freezing point.

Thus, the 'death icicle' was born. From the bottom, it can be seen that an icicle extends from the sea surface to the bottom. When the temperature is extremely low, the freezing occurs in a very short time, and it is touched by the icicle. The marine life that arrives is frozen in an instant, which is why the phenomenon is called 'death icicles'.

[What magic? 】

[Fang Shen, I want to learn this! 】

[Fang Shen: If I knew this, I would have gone fucking to travel in space and universe long ago]

Now we are walking on the ice sheet of Greenland. The thickness of the ice sheet can even reach thousands of meters, which cannot be pierced by manpower. The known average thickness is more than 2,000 meters, and the thickest place even exceeds 3,400 meters. 100 meters.

One after another astonishing data popped out of Bi Fang's mouth, shocking the audience.

Thousands of meters thick ice, who has seen it?

In such a shock, Bi Fang never reached the mountain range in front of him. As a last resort, he dug another snow ditch to cope with it all night.

It was not until the evening of the third day that Bi Fang really touched the first rock on the island.

And so far, he has not eaten for three days.