From time to time we hear the weather forecast for 1-2 days ahead.In this regard, in the winter, we sometimes have to deal with concepts such as "ice" and "black ice."Have you ever wondered what the ice and sleet?Many people believe that this is one and the same.No!These are two completely different things!Do you know how to behave during ice and black ice, so as not to slip and be seriously injured?Let us dot the "i" and see what is what.
What is ice?
definition of this concept can be regarded as a scientific and narrow-minded point of view.From a scientific point of view, icing is called the deposition of ice on those or other exposed surfaces.This occurs mainly on the windward side and by freezing droplets fallen freezing precipitation, such as rain and only at low temperatures.
In more simple terms, the ice - is the formation of the trees, wires and ground ice directly related to the freezing rain that had fallen on the cold surface at negative temperatures.That's what the ice!
At what temperature there is ice?
In principle, it is quite common in the winter.It is observed at temperatures from 0 to -12 degrees Celsius and plus values: 0 to +3 degrees Celsius.
How often does it happen?
So, what is ice, we understand.But what is the frequency of its occurrence?As mentioned above, it occurs during the cold half of the year and, as a rule, when setting out warm humid air from the Mediterranean or the Atlantic.
Forecasters say that about once every 10 years, ice can be quite intense and prolonged, covering the entire region.According to the Hydrometeorological Center of Russia, the last time this phenomenon has reached the scale of the disaster happened in 2010.
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thickness of ice of the frozen ice, as a rule, does not have some kind of gigantic proportions.Normally it varies between 1 cm and slightly above.However, if this thickness exceeds the above level, it can lead to serious consequences.Here are some of them:
- cliffs of power lines;
- ice crust on cars;
- mass falling trees;
- car accidents;
- personal injury.
Icy winter usually increases during the time until the Earth from space fall freezing precipitation.Ice deposited on the ground, trees, cars, rooftops, can persist for many days.His rise typically lasts less than an hour, but the destruction happens quite slowly and is almost always due to the evaporation of the ice.
Black ice
What is sleet?It is an ordinary ice, arising on the ground (on the roads, rooftops) from the freezing water after a thaw or rain when a sudden drop in temperature (cold snap).The second name of this natural phenomenon - "slippery road".
short, black ice is formed by melting snow (or ice) during a sharp warming.This phenomenon occurs quite frequently with fluctuations in air temperature around 0 degrees Celsius.That's what sleet!
difference between ice and sleet
As noted above, both of these concepts do not have anything in common, but are equally dangerous for humans.In these natural phenomena there is a rather serious threat to life and health of people, especially motorists.
Once again, we note the difference between them is the loss of ice freezing precipitation and sleet - it is frozen water, which already covers the ground, for example, came from the surface or from other sources, formed as a result of short-term thaw.In addition, the ice - a rare phenomenon in comparison with sleet.
rules at ice and black ice, which should be followed
should carefully listen to the weather forecast.If forecasters convey ice or ice-covered ground, you need to act.
- best way to keep your balance without falling on the ice and is injured - use shoes with metal taps or ribbed soles.For dry soles can stick adhesive tape or a medical adhesive plaster.
- move around in this period very carefully, and most importantly, not in a hurry!Stepping totally on the entire sole.Your hands at this time should be free, and the legs slightly relaxed.Pensioners while traveling on the ice should be "armed" with a rubber-tipped cane.
- If you slipped Well, try to keep your balance, balancing their own hands.It resembles a kind of ice dancing.
- There is another version of the situation, if you are from slips: You can sit down, thereby reducing the height of the fall.If you do fall, group and try the moment of impact on the ice to roll.This should soften the blow.Such techniques are used stunt on the set.
- If you were seriously injured (hit my head, split the eyebrow, broken arm) or a bruise, it will certainly contact the nearest emergency station.
- Remember that ice is often accompanied by de-icing of power lines, so pay special attention to them, as well as catenary wires.The fact that the ragged exposed wires may be under your feet.
- Dear motorists!During any icing phenomena should refrain as much as possible from using their vehicles!This will allow you to protect yourself, your vehicles and pedestrians.
