Water on the surface of our planet is constantly in motion. Complete lull is a rare occurrence for the waters, it is called calm, and during sailing, such a phenomenon was as depressing as a storm, because the ship could not move. Sometimes sailing vessels were idle due to such phenomena for days, even weeks. Nevertheless, calm is not such a characteristic phenomenon as waves, it is observed much less frequently.

What is the excitement, what causes it? These questions should be answered, especially since it will not be difficult to do this.

Waves and Current

Unrest on the surface of the water is caused by various reasons, in particular, by the current. Rivers and streams are not standing reservoirs; water is constantly circulating in them. The course can be observed in systems of lakes, in standing reservoirs fed by underground sources, causing a small - or significant disturbance. Strong waves accompany waterfalls, any powerful current. Water in these situations moves, causing a wave-like motion of the surface of different intensity.

The winds that cause excitement

The wind on the surface may well stir up the wind - it is not difficult to verify the fact, the surface will move, even if you blow it. Excitement depends on the strength of the wind, the stronger the hurricane, the brighter the storm manifests itself. The size of the reservoir also plays a role - if the wave “has somewhere to roam,” it will be larger.

Tsunamis and tectonic movements

The waves in the storm can seem large, even frightening. Sometimes the ship throws so on the breakers that he risks just rolling over. But wind waves are not the worst variant of water movement. The tsunami is much worse - although this type of wave is not particularly visible in the middle of the ocean, it is unremarkable. The tsunami reaches a huge size when entering the sandbank, approaching the coast. A many-meter mass of water falls on the coastal cities, washing away and blowing literally everything into the open ocean. Mankind can not oppose anything to a multimeter wall of water, only warning systems help.

Titanic waves of this type are generated by processes invisible to the eye - underwater earthquakes, volcanic eruptions, and other tectonic processes. There are cases when small tsunamis formed during the collapse of serious ice massifs in the ocean during polar caps, during explosions and landslides on volcanic islands. Tsunamis are merciless, they can circumnavigate the globe several times, crashing into all the lands within reach, washing off entire islands.

Tidal waves

The most regular and largest waves on the planet are tidal. The moon acts on the Earth with its gravity, gravity forces water to follow itself - and the satellite is constantly changing its position around the planet. Water “travels” with it, rising every 6 hours, and falling over the next 6. The process is most clearly seen in the full moon and new moon.The ebbs and flows are felt in the oceans, seas directly related to them. In isolated or weakly connected reservoirs, they are invisible - so, in the Azov and Black Sea, the process is practically not observed. In the Mediterranean Sea and other directly related to the oceans, the process is completely obvious.

Thus, water remains mobile always, there are many factors that cause its movement. The absence of waves is a rare occurrence for a large reservoir, as a rule, the water sways and moves under the influence of winds, currents, and other forces that affect them.