Convective mantle

The mantle is located between the Earth's core and crust, and is divided into the upper mantle and the lower mantle. There is a asthenosphere in the upper part of the upper mantle, and the mantle material in the asthenosphere increases in heat, decreases in density, expands in volume, and generates upwelling heat flux; The rising mantle material encounters the bottom of the crust and flows outwards. As the temperature decreases, the density of mantle material increases and then settles into the mantle. This process is called mantle convection. Mantle convection is the main pathway for transporting energy, momentum, and mass from the Earth's interior to the surface, also known as mantle upwelling flow or plume. Mantle convection can bring about geological disasters such as earthquakes and volcanoes, as well as shape the topography of the Earth's surface, forming the geological structure of the Earth's interior. The study of mantle convection is of great significance for us to understand the evolution process of the Earth, predict and prevent geological disasters.

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The mantle is located in the middle layer of the Earth between the crust and the core, with a thickness of over 2800 kilometers and accounting for 82% of the total volume of the Earth. It is the main pathway for the Earth's interior to transport energy, momentum, and mass to the surface. The Earth's mantle is composed of two parts: the upper asthenosphere and the lower asthenosphere. The upper asthenosphere has a higher temperature, while the lower asthenosphere has a lower temperature. Due to temperature differences, magma and lava in the mantle rise or fall, forming convective flows, and the driving force of mantle convection is an important way for the release and transfer of energy inside the Earth. Mantle convection can not only cause geological disasters such as earthquakes and volcanoes, but also shape the topography of the Earth's surface and form the geological structure of the Earth's interior. By studying the mantle, mantle transition zone, core mantle boundary, and even deeper core of the Earth, we can deeply analyze the Earth and study how it has become habitable through billions of years of evolution.