It is seen as a symbol of prestige and prestige, and climbing Mount Everest in the Himalayas represents a series of risks, such as temperatures of up to -60 ° C, height, snows, high costs and a narrow climatic window.
For these obstacles, the future climbers should add another one: the highest mountain on this planet grows, and the highest sound of other heights of their mountain range.
Although it looks surprising, The truth is that the mountains grow. Not only grow, but also suffers from corrosion and wear, as well as the “fluctuation” process on the mantle of the earth called ISostasia.
According to a recent study, It was published in Nature GeoscienceEverest exceeds 15 to 50 meters old, due to the erosion caused by a river network, 75 km, and it digs the large valley.
The loss of the Earth’s mass due to the erosion of the river is an effect called equal adjustment. When a large amount of the ground or ice that presses the crust is removed, it slows down slowly to restore its balance.
In the case of Everst, the mountain rises at a rate of up to 2 millimeters annually. Over the past 89 thousand years, this is already accumulated The mountain height increased between 15 and 50 meters.
Everest growth test
To test their hypotheses, the authors used mathematical and accounting tools, to simulate the development of rivers over time.
One of this sports approach is called Flotion Form ModelThe relationship between the flow of water from the river and the way it affects the surrounding terrain.
The goal is to predict potential landscape altitudes based on factors such as water speed and rock movement. Although this rate may differ in other places, the authors considered that the height of the earth occurs at a fixed pace.
To understand how this height occurred, the researchers analyzed and extracted rock cooling, a process in which the deep stones of the Earth’s crust are brought to the surface.
These studies called Thermochologytricol showed The movement of tectonic paintings occurs On a deep slope in the Earth’s crust.
This means that in some areas the terrain rises faster due to the geological powers that operate under the surface, which also contribute to the rise of Everters.
Why is Everest continues to grow?
In a press release, the joint author Adam Smith, a PhD student in the Department of Earth Sciences, University of London (UCL) says, says Mount Everest “is still growing”.
For him, the research showed that with the “deeper river pieces”, the area of the area removes, the Earth’s crust gradually rises, and the mountain grows at height. This means that surface processes can affect the geological dynamics of large mountain ranges.
According to the study, the height of Everest occurred thousands of years ago, The result of “drainage piracy”, The process “steals” by a river “is another flow.
In this arrest of the river, the Aaron River, which runs today to the east of Mount Everest, may have stolen the flow of the Kossi River, which increased its flow. This is a throat incision, and the deep vessels carved by the rivers on the ground, Remove billions of tons from land and deposits.
For the main author of the study, Shaw Han of the Chinese University of Earth Sciences, “the interaction between the erosion of the Aaron River and the upward pressure of the Earth’s mantle pushes Everest, and raises it to a higher height than it was without this process.”
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