Earth crust,earth mantle and the core are three layers of earth. The average radius of the earth is about 6370 kilometers. The crust thickness is about 35 kilometers. Most destructive earthquake happened in the crust, it also occurs in asthenosphere
more infoThe various signs that appear in nature before the earthquake may be related to the gestation and occurrence of the earthquake are called earthquake precursors. There are roughly two types: Microscopic precursors: The changes before the earthquake ar
more infoEarth crust is lithosphere of the earth surface. Earthquake is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Tectonic earthquakes caused by geological stru
more infoAn earthquake is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energ
more infoWudalianchi seismographic station was established in 1978, it is restructured into Wudalianchi volcanic seismic monitoring station in 1988.
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