How is it waves?


When the wind blows over the sea like a mirror, then this begins to press on and crawl on its surface in waves. The stronger the wind will be the largest waves formed. After some time the waves acquire the maximum possible size for each wind strength. The more distance there is at sea, the wind has more time to get up the waves at its maximum size. At this distance is known as "Date". Although infernal wind blowing over a pond, do not get big waves. Of course the "Date" is very small. A Greater Date therefore more waves ... but within certain limits, for once reached the maximum size of the wave for a given wind strength, even though we have much more distance to go up the wave, this will remain at its maximum without grow. But the sea state is much more complicated than that. Imagine it has already stirred the sea and the waves begin to travel over hundreds of kilometers.In a very distant wind blows another one magnitude and another direction. So in this new area are raised waves of a different size and with another "direction" of propagation. And these new waves come to them waves generated elsewhere. The sum of the two types of waves is the sea state will suffer. At the final set you can add another wave trains from elsewhere to form a real "patchwork". Ultimately, the final state of the sea is the sum of the different fronts of waves formed in different ocean areas.

The height of the waves

When we indicated in a weather map that the waves are 2 m, we must understand that this is average laaltura waves. Rather, the average height of the largest third of waves. That is, if scientists measure such as 100 waves, these are chosen and the 33 largest of these 33 is estimated to average height. The value is therefore known as H1 / 3. All this means that if we say we'll have waves of 2 meters, actually see some of them considerably older. If they announce such waves of 4 meters, it is normal that we see with some frequency some 20% higher up to 5 meters and unusually perhaps some much higher. In a very small percentage could be some up to double the size advertised. To find the probability of encountering big waves some maps indicate the value of the larger waves as H1/10. This will take the average height of 10% of the biggest waves. That is, measures 100 waves, we are left with the 10 largest, and these will be taken the average height. But at sea all is uncertain and no one will guarantee with absolute certainty that we will not encounter the "mother of all waves.

Sea Mist

When the air cools, the molecules of water vapor decrease their thermal agitation, clumping together and forming tiny water droplets.Being very small fall speed is very weak and the smallest draft allows them to float and stay in suspension. In the sky are called clouds and fog at ground level is. When these tiny droplets together, forming larger droplets falling with more speed and unable to float in the air, the rain came.

There are several types of fog. When an air mass that comes from the moisture-laden South hits the cold sea surface, forming a persistent and very dense fog, called advection fog will disappear only when the wind shifts or disappears.

When the earth cools at night calm windless fog can be formed on the surface that disappear when the wind blows or the sun hot enough.

Rosa de los Vientos (compass )

The Compass Rose is a circle that is marked around the bearings in which the circumference is divided horizon. The basic guidelines are four:North, South, East and West, so the horizon is divided into four parts of 90 degrees each. The line between North and South is called meridian or north-south line, which connects the two points is called the east-west line. Bisectors of each of the angles formed by these four parties are four orientations or lateral directions, which are: Northeast, Southeast, Southwest and Northeast. If we divide these parts, we get eight new side paths: north-northeast, east-northeast, east-southeast south-southeast south-southwest, west-southwest, west-northwest and north-northwest.

The winds are different depending on the direction from which usually carry the name and address from that blow, but they also have a proper name. Depending on the region are referred to one form or another. For example Mistral is also known as Galerna, Xaloc as wind, etc.. The wind direction depends on the centers and isobaric shifts from high to low pressure being much higher speed, the greater the pressure differential between the two.The Coriolis effect makes that movement is clockwise as the center of the anticyclone and the opposite in the center of the storm, which can be seen in isobaric maps.

The pressure difference on the maps is represented by isobaric isobaric lines more or less together. Are much closer together, the stronger the wind Sectors corresponding to each wind
DirecciónNombreGeog.Grados
NorteTramuntanaNde 337,5º a 22,5º
NoresteGregalNEde 22,5º a 67,5º
EsteLevanteEde 67,5º a 112,5º
SuresteXaloc o SirocoSEde 112,5º a 157,5º
SurMigjornSde 157,5º a 202,5º
SuroesteLeveche o GarbíSWde 202,5º a 247,5º
OestePonienteWde 247,5º a 292,5º
NoroesteMistralNWde 292,5º a 337,5º

When wind direction varies by more than 45 degrees, spoken of "wind component" Winds from the .... They range from
Vientos de componente....Oscilan entre
Norte315º y 45º
Este45º y 135º
Sur135º y 225º
Oeste225º y 315º

If wind direction varies by more than 90 degrees, we speak of "variable wind direction," which should not be mistaken with a wind that rotates in one direction to another during the period considered We call "Gust" to a temporary deviation of wind speed over its average value over a relatively short time. Depending on the speed of wind can call them Name Speed Media

NombreVelocidad Media
Calma< 5 km/h
Flojosentre 6 y 20 km/h
Moderadosentre 21 y 40 km/h
Fuertesentre 41 y 70 km/h
Muy Fuertesentre 71 y 120 km/h
Huracanados> 120 km/h

Breezes of land and sea The ability of warming that has the sea and the land is the cause of the generation of sea breezes and land. These movements of air circulation will be more pronounced the stronger the solar energy is more pronounced will heat stations and on a clear day without clouds. During the day the sun heats the earth more easily, since water has more thermal inertia. During the day the earth is warmer and the air pressure increases which causes a shift of this high mass to the sea. The vacuum formed in the coastal zone to regain the air that has leaked through the upper areas produces a wind toward the coast from the sea. Thus is created during the day the sea breeze.


By contrast, during the night the opposite effect establishes the land breeze. In this case the sea is warmer than the land and in the upper air is directed to ground creating a vacuum in the lower layers of the atmosphere that attracts marine air from land to sea. In the evening breeze comes from land to sea.

The waves are formed by the action of wind drag on the surface of the water, so the winds that come during the day from the ocean creates waves of greater intensity the stronger the wind. At night, the wind blowing from land, the coastal water area have not had the opportunity to make waves, causing the sea coast is calmer than during the day. The sea breeze during the day can penetrate up to 50 miles inland with large load of moisture, which may produce small showers if there are significant drops in temperature.

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