What is trough?

The first thing that we must emphasize is the etymological origin of the term dug, which we are dealing with now, in order to arrive earlier in the discovery of its meaning. In this case, it should be noted that it derives from the Latin, from “vacuus” which can be translated as “empty” and which, in turn, derives from the verb “vacare”, which is synonymous with “to be empty”.

It is known as vaguada to the line that marks the sector at the bottom of the valleys or in the river channel. It is the line that connects the points that are at a lower height: the natural currents of water pass through it. Also known as talweg from a German term, the valley exhibits a shift to the right in the southern hemisphere and to the left in the northern hemisphere. This is due to the so-called Coriolis effect, which is a consequence of the movement that planet Earth makes when rotating.

In the field of meteorology, it is called a low atmospheric pressure valley that is registered between two sectors that present high pressure. This barometric depression therefore resembles a valley. A depression occurs when a mass of warm, moist air rises through a low-pressure sector located between two high-pressure sectors with cooler air masses. This phenomenon causes vertically developing clouds and precipitation. It is important to know that, in the meteorological field, it is determined that, based on the origin of the atmospheric valley and its characteristics, it can be very similar to what is known as a hurricane, saving distances of course. The coastal valley develops in South America. The phenomenon is generated in front of a coastal area, where a low pressure sector develops. When it moves eastward, it causes other air masses to descend from the slopes of the Andes Mountains. Lastly, La Vaguada is the name of a neighborhood in the Spanish city of Malaga. Without forgetting that, in addition, La Vaguada is the name of one of the most important shopping centers in Madrid. It is located in the Pilar neighborhood and is considered the first of its kind to be opened in the Spanish capital. It was César Manrique who designed this shopping centre, which at first was opposed by the neighbors as they believed that it would put an end to small businesses. However, they later decided to support its construction, taking into account the job offers that it would install and the public and cultural spaces that it would host in its facilities. It was opened in 1983, has a total of five floors, was renovated in 2008 and offers a wide variety of establishments, both hypermarkets and small shops, traditional markets, cinemas and high-value services such as Post Offices or pharmacies.

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