File Name: earthquake causes and effects .zip
Population growth and increasing urbanization in earthquake-prone areas suggest that earthquake impacts on human populations will increase in the coming decades. Recent large earthquakes affecting large populations in Japan, Haiti, Chile and New Zealand are evidence of this trend and also illustrate significant variations in outcomes such damage and mortality levels. The objectives of this review were to describe the impact of earthquakes on human populations in terms of mortality, injury and displacement and, to the extent possible, identify risk factors associated with these outcomes. This is one of five reviews on the human impact of natural disasters.
It is also known as tremblor, tremor or quake. Let us tell you that just below the earth's surface where earthquakes start is called hypocenter and just directly above the surface of the earth is called epicentre? Size of an earthquake may differ and sometimes it is said that weak earthquakes are not felt also but the violent one may cause destruction and may destroy whole cities.
It all depends upon the frequency, type and size of the earthquake experienced over a period of time. The vibrations caused by an earthquake are detected by a seismometer and on a seismograph, it plots these vibrations. Richter scale also measured the strength or magnitude of an earthquake. When an earthquake measured around 7 or 8 on the Richter scale, it can be devastating. Top 10 Worst Earthquakes in India. When there is sudden movement on the Earth's crust, earthquakes occur.
Earthquakes are caused due to sudden lateral or vertical movements in the crust of the Earth. Or we can say that when tectonic plates ride over the other and cause the collision of orogeny or mountain building. The largest faults are formed on the surface of the Earth due to boundaries between moving plates. When there is relative motion between the plates, it is more severe.
Circum-Pacific Belt is the most important earthquakes belt which affects several populated coastal regions around the Pacific Ocean like New Zealand, New Guinea, and Japan, etc.
Let us tell you that when the friction overcomes by mechanical stresses, the rocks slip and releases vast amounts of energy and is known as an earthquake. When there is motion between the plates, the stress increases and if it continues allows sliding over the locked portion of the fault and releases the stored energy as shock waves.
Mainly, there are four types of earthquakes namely tectonic, volcanic, collapse and explosion. Volcanic earthquake: Results from tectonic forces and occurs in conjunction with volcanic activity. Collapse earthquake: are generally small earthquakes that occur in underground caverns and mines caused by the seismic waves which are produced from the explosion of rock on the surface. Explosion earthquake : Occur due to the detonation of a nuclear or chemical device.
We all know that the effects of an earthquake are terrible and devastating. Several buildings collapsed, schools, hospitals, a whole city may be destroyed due to it. A lot of people get killed and injured.
Various people lose their property and money. It not only affects the health of the people but emotionally also make weak. Some environmental effects occur due to the earthquake are surface faulting, tectonic uplift and subsidence, tsunamis, soil liquefaction, ground resonance, landslides, etc. Hoping that you will come to know about the earthquake, how it occurs and its effects. Top 10 Deadliest Earthquakes in the World. To meet our Jury, click here.
Earthquake: Causes, Effects and Magnitude measurement As we know that Earthquake shakes in Delhi has been felt more than three times in one month recently. No doubt one of the worst natural disasters is an Earthquake. How they occur repeatedly?
Home 20 Trending Quiz Feedback Add to home.
Earthquake: Causes, Effects and Magnitude measurement
What are earthquakes and what causes them? How many earthquakes occur annually worldwide? What equipment is used to record and measure earthquakes? Where do earthquakes occur most frequently? Is it possible to predict earthquakes? Why are the values published on the magnitude of an earthquake sometimes slightly different? Where can I obtain information on current and past earthquakes?
Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don't just slide smoothly; the rocks catch on each other. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that's built up. When the rocks break, the earthquake occurs.
It is also known as tremblor, tremor or quake. Let us tell you that just below the earth's surface where earthquakes start is called hypocenter and just directly above the surface of the earth is called epicentre? Size of an earthquake may differ and sometimes it is said that weak earthquakes are not felt also but the violent one may cause destruction and may destroy whole cities. It all depends upon the frequency, type and size of the earthquake experienced over a period of time. The vibrations caused by an earthquake are detected by a seismometer and on a seismograph, it plots these vibrations.
In Alaska in , a magnitude 9. What causes the ground tremble like that? The answer is simple. The Earth's surface is on the move.
The number of earthquakes with high damage and high losses has been limited to around events since Disaggregation of secondary effect economic losses and fatalities demonstrating the relative influence of historical losses from direct earthquake shaking in comparison to tsunami, fire, landslides, liquefaction, fault rupture, and other type losses is important if we are to understand the key causes post-earthquake. The trends and major event impacts of secondary effects are explored in terms of their historic impact as well as looking to improved ways to disaggregate them through two case studies of the Tohoku event for earthquake, tsunami, liquefaction, fire, and the nuclear impact; as well as the Chilean earthquake and tsunami event. Disaggregation of secondary effect economic losses and fatalities demonstrating the relative influence of historical losses from direct earthquake shaking in comparison to tsunami, fire, landslides, liquefactions, fault rupture, and other type losses is important if we are to understand the key causes post-earthquake. Existing studies have attempted to examine the key causes without putting dollar values to the losses, e.
So many things are said to cause earthquakes, things have become a little complex during the last years. I prepared a list with no claim to completeness of things that might cause earthquakes. Some are already well-known, some were suprising to me. I guess this can only be interpretetd as an attempt to minimize seismic hazard in Germany, everything else would be ridiculous…. He likes Central Asia and the Mediterranean and looks for ancient earthquakes.
An earthquake is a sudden, rapid shaking of the ground caused by the breaking and shifting of rock beneath the Earth's surface. This shaking can cause damage to buildings and bridges; disrupt gas, electric, and phone service; and sometimes trigger landslides, avalanches, flash floods, fires, and huge, destructive ocean waves tsunamis. Buildings with foundations resting on unconsolidated landfill, old waterways, or other unstable soil are most at risk.
The nature of earthquakes
За открытыми воротами виднелась площадь, на которой не было ни души, а за ней, вдали, - стены Санта-Круса. Беккер не мог исчезнуть, тем более так. Халохот оглядел дворик. Он. Он должен быть .
Человек улыбнулся: охота становилась интересной. Беккер здесь… Я чувствую, что. Он двигался методично, обходя один ряд за другим.
Смит сообщил: - Мы вели наблюдение из мини-автобуса с расстояния метров в пятьдесят. Вначале все шло гладко. Халохот, по всей видимости, настоящий профессионал.
Да, убит. - Но… но это невозможно! - У немца перехватило дыхание. - Я там. У него случился инфаркт. Я сам .