A.CAC DISASTER MOVEMENT BY LAND
Earthquake
a, Concept:
flow or seismic ground shaking, or a wobbly motion of the ground. Earthquakes typically result from the movement of the milling (rapid formation of geologic fault) or faults on the shell parts of the Earth and the planets formed mainly from solid as rock. But slowly, the ground is always moving and earthquakes occur when the stress is higher than the physical stamina of the earth.
-Most every earthquake event at the boundaries of tectonic plates is the part of the Earth's lithosphere (the researchers used data on the earthquake location to find out what this boundary).
-The earthquake occurred at the boundary is called trans-plate earthquakes and the quake occurred in a disk (more rarely) called the earthquake in the disc.
b, reason:
profit Consultancy Birth: related advocacy volcanic eruptions, tectonic movement in subduction zones , the active faults.
Bonded birth: meteorite impact on Earth, the rock landslides in large quantities.
-Human Resources Birth: Activities altering stress near surface ice or liquid pressure especially the nuclear tests underground.
Also not to mention acoustic activity, particularly seismic sound engineering. c, characteristic flow occurs daily land on Earth, but almost not noticeable and not cause damage. Large earthquakes can cause severe damage and fatal in many ways. Earthquakes can cause landslides, soil cracks, tsunami, tidal false, fragile, and fire. However, in most of the earthquake, the movement of the ground caused the most damage. In many cases, there are many smaller earthquakes occur before or after the main earthquake; games are called aftershocks. The capacity of the earthquake extended over a large area, and in the big earthquake could spread out globally. Scientists often can determine the point at which the seismic wave is started. This point is called the focal. The projection of this point on the ground is called the epicenter. -Many earthquake, especially the battle happen seabed, could cause a tsunami, or maybe because the deformed seabed or because land undersea landslides. distribution: in three areas that ring the Pacific Earthquake, Earthquake Records Tropical Coast-Trans Asia and tropical undersea earthquake mountain river between the oceans. -There are four kinds of local waves injuries are created simultaneously. However, they have different speeds and can be recorded in order to go to the base station as follows: P waves, S waves, Love waves, and finally the Rayleigh waves. energy absorbed earthquake: Richter + To indicate the extent of the earthquake Richter scale we use 1-2 on the Richter scale not identify 2-4 on the Richter scale can be aware but not damaging 4-5 on the Richter scale rocked Ground , heard the explosion, significant damage is not 5-6 on the Richter scale shook the door, some works have been cracking phenomenon of 6-7 on the Richter scale of 7-8 on the Richter scale Strong, destroying most of the ordinary building, with large cracks or subsidence phenomenon on the ground. 8-9 on the Richter scale > 9 on the Richter scale occurred very rarely > 10 on the Richter scale Pole rare different scales The Elevator moment magnitude (Mw) Rossi-Forel scale (abbreviated as RF) Medvedev-Sponheuer-Karnik scale (abbreviated MSK) Mercalli Scale (abbreviated MM) Shindo scale meteorology agency Japan Elevator EMS98 in Europe d, Consequences: soil flow often occurs suddenly and in a short time earth makes partial flow of the earth's crust altered causing many disasters and terrible damage to the kind of people e, should What to do during an earthquake: Earthquake is a disaster is difficult to predict, so the people who live in a place near where earthquakes often can not avoid it. However, there are some things we can do to before, during, and after the quake to prevent injuries and damages caused by the earthquake. Before the earthquake Those things in the house should be standing firm. Things like television, mirrors, computer, etc. should be fastened to the wall so that when shaken nor fall to the ground causing injuries. Paintings, mirrors, etc. should be placed away from the bed. Put heavy furniture in the house as bookshelf, cupboard, etc. away from the door and places frequented by so when they leaned still. 2.Tuyet Lo a, Concept Myth: Avalanches, avalanches or snow Truoi phenomenon when a large amount of snow, often mixed with water and air, suddenly poured down the mountainside. b, Cause An avalanche is composed of three elements: snow, surface slope and impact. If the weak layer of snow near the surface, it will create a V-shaped snow falls along the mountains and low adhesion - such as a sand dune, the powerful , snow will landslides. If weak in deep snow in the snowpack it will cause an avalanche to the floor - the higher threat level. The extent of an avalanche floor depending on the depth of the snow weak, weak snow layers as in
đang được dịch, vui lòng đợi..
