During the eleventh period, for Chinese tourists who choose to travel abroad, do not choose Bali, because the recent eruption of the volcano in Bali is imminent. For their own safety, we should try to avoid it!
When will Bali volcano erupt in 2017
Indonesia's Geological Bureau has raised its alert level to the third level, which indicates that there is a possibility of eruption within two weeks, as the crustal movement around the volcano has been greatly strengthened. At present, all activities have been banned in the area with a radius of 6km or an altitude of 950m.
Hazards of volcanic eruption
Volcanic debris flow
A large amount of volcanic ash and rainstorm spewed out by the eruption can form debris flow, which can destroy roads and bridges, submerge nearby villages and cities, and make countless people homeless. Mud from mud and rock debris can flood the city.
Although the rock is covered by the ash cloud, the huge rock that is ejected into the mid air can still be seen when the volcano erupts.
Detritus pollution
The pyroclastic is the magma condensed clastic ejected from the volcano and the rock clastic in the volcanic channel and the four walls. Volcanic fragments are classified as volcanic blocks larger than eggs, smaller than those of eggs, volcanic sand and tiny particles of volcanic ash, which are smaller than those of soybeans. They are divided into spindle shells, stripe shaped or twisting shaped volcanic shells, flat lava cakes and filamentous volcanic hair; according to the internal structure, they are divided into: porous, lighter colored pumice, foam, porous interior, black and brown color. Of the volcano. The Pyroclasts ejected into the air fall in the vicinity of the crater, light and small, or are blown hundreds of kilometers away by the wind to settle, or rise to the stratosphere with the general circulation. When a volcano erupts, the hot ash flow mixes with water (rainstorm in the volcanic area, rivers and lakes nearby, etc.) to form a dense volcanic mud flow. Both ash flow and mud flow are disastrous.
Pyroclastic lava is a kind of rock with pyroclastic material accounting for more than 90%. Pyroclastic material mainly includes rock debris, crystal debris and glass debris. Because pyroclastic material has not been transported for a long distance, it is basically accumulated in situ, so particle separation and roundness are very poor.
Pyroclastic flow
Pyroclastic flow is one of the main volcanic killers, which is very destructive and fatal. Because of its speed, it is difficult to avoid. Pyroclastic flow is a mixture of gas and pyroclastic. It is not a flow of water, but a high-density, high-temperature, high-speed air flow mixed with rock debris, which is often swept close to the ground. Pyroclastic flows can reach temperatures of 1500 & deg; F and speeds of 100-150 miles per hour (Myers et al., 1995), which can crush and burn any life and property on its path. Pyroclastic flow results from explosive eruption or collapse of lava dome.
Lava flow
After a volcano erupts, there is a certain probability of lava flow. The lava flow which flows in liquid state on the surface of the earth is called lava flow, and the solid rock accumulation formed after the lava flow cools is sometimes called lava flow. The temperature of molten rock in liquid flow is usually between 900 & deg; C and 1200 & deg; C. if there is more gas in the molten rock, the lower temperature can also flow. Acid lavas are viscous and flow is not far away. Large areas of lava flow are often basic lavas. When the temperature is high and the slope is steep, the velocity of lava flow can reach 65 km / h. The shape of lava flow depends on many aspects, such as lava composition (basalt, Anshan rock, dacite, rhyolite), flow, topography and environment.
Landslide
After the eruption of the volcano, the huge vibration produced by the eruption will cause the soil around the volcano to loosen, resulting in landslides.