Earthquake. An earthquake is tremors and vibrations of the Earth’s surface resulting from the sudden release of energy in the earth’s crust and creating seismic waves. On the Earth's surface, earthquakes manifest themselves in the form of vibrations, shaking, and also displacement of the soil.
landslide. A landslide is a creep and separation of rock masses down a slope under the influence of gravity. Landslides occur on the slopes of valleys or river banks, in the mountains, on the shores of the seas, the most ambitious at the bottom of the seas. Landslides most often occur on slopes composed of alternating water-resistant and aquiferous rocks.
Collapse. Collapse - separation and falling of rock masses down from the mountain slopes under the influence of gravity. Collapses occur on the slopes of river banks and valleys, in the mountains, on the shores of the seas. The cause of the collapse is the imbalance between the shear force of gravity and the holding forces.
Limn logical disaster. A limn logical catastrophe is a physical phenomenon in which gas (usually CO2) erupts to the surface from the depths of a pond and poses a threat of strangulation of wild animals, livestock and people. A limn logical catastrophe is characterized by the chemical composition, mass and origin of gases, the duration of the release and the trigger mechanism of the catastrophe. Such gas emissions can cause tsunamis in a pond due to the displacement of water by rising gas.
tornado. A tornado is an atmospheric whirlwind that arises in a cumulonimbus (thunder) cloud and spreads downward, often to the very surface of the earth, in the form of a cloudy sleeve or trunk tens and hundreds of meters in diameter. The development of a tornado from a cloud distinguishes it from some outwardly similar and also distinctive in nature phenomena, for example, tornado-vortices and dusty (sand) vortices.
Metel. Metel (snowstorm, blizzard) - wind transfer of snow raised from the surface of the earth. At official meteorological stations, blowing snow, a snowstorm and a general snowstorm are noted. Some authors attribute to the blizzard wind transfer of snow falling from the clouds, and not yet touched the earth's surface.