May 16, 2022 3:48 pm

The “gears” of the Earth exposed by the Tonga volcano

Roger Sole 5 min
land machine
The natural systems of the Earth, atmosphere, hydrosphere, geosphere and biosphere, act like huge gears.

Our planet literally acts like a living organism in which all parts of “his body” are related. If one of them fails or “breaks”, it causes consequences on the whole. would be a metabolism where they intervene air, water, land and living beings.

The physical geography of the blue planet is made up of four natural systems: atmosphere, hydrosphere, geosphere and biosphere. The interrelationships between these four pieces are many and multidirectional. We have seen the most recent example this weekend with the volcano eruption on tong islanda, which caused different tsunamis in the Pacific that reached Japan, the United States or the coasts of South America.

This natural event mainly links three natural systems: geosphere, atmosphere and hydrosphere. The magmatic material and pyroclasts that expels the volcano are part of the geosferawhich, in turn, come into contact with the atmosphere. Simultaneously with this chain, volcanoes are usually found in contact zones of tectonic plates and their shock can affect the hydrosphere in the form of tsunamis. In the case of Tonga, It is a underwater volcanic eruption, With which, even more likely these tsunamis.

The explosion caused by the volcano spread in the form of pressure waves throughout the planet. and it was captured by different barometers of our country. This fact shows that the atmosphere is literally a fluid and any disturbance or impact on that large gaseous mass has a major spread.

This natural episode is a significant example of the interrelationship between the geosphere, atmosphere and hydrosphere. Here we present an amalgamation of different atmospheric events derived from this interaction of natural systems:

  • Risks in the Balearic Islands. This phenomenon causes sharp swings in sea level suddenly due to fluctuations in atmospheric pressure. It normally occurs with high southwest situations with a mass of warm air in the western Mediterranean.
  • January declines. As happens in the “rissagas”, is an effect of atmospheric pressure on the hydrosphere. In this case, winter anticyclonic situations with very high pressures tend to put pressure on the sea surface and lower its level. These days it has been observed in the Balearic Islands.
  • Lake effect. In this case it is about how the sea influences the atmosphere. Cold air masses become unstable when they cross a sea surface or a large lake. because they catch and absorb humidity, in such a way that they are reinforced and discharge more precipitation. This effect is typical of the Great Lakes of the USA but it also occurs in our country, especially in the Bay of Biscay and the Balearic Islands., where the masses of the north take more sea travel. This lake effect sand produces convincingly in the Eastern Mediterranean, the so-called “Bora”: cold winds from the Balkans that cross the Adriatic, strengthen and dump significant snowfalls on the Italian peninsula and northern Sicily.
  • Effects of river courses. We have already seen that seas and large lakes enhance unstable air masses. Well, the rivers also cause phenomena on a more local scale the regional, which we collected in this article.
  • albedo effect. In this case the biosphere and the geosphere combine and sometimes influence atmospheric phenomena. The presence of vegetation, constructions, the roughness of the terrain, etc. condition the incident energy balance and thus, the temperature.
  • Maritime storms. Without a doubt, this is the star example of the interaction between the atmosphere (wind) and the sea. The wind and low pressure They are primarily responsible for the maritime disturbance.
  • urban heat island. The last example relates the biosphere with atmosphere. The metabolism of large cities causes concentric heating within these cities.

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