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eassy about earthquake
assignment about earthquake
eassy about earthquake
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Exploring Why LEDC's Suffer Greater Damage From Earthquakes Than MEDC's
A MEDC is a more economically developed country; therefore it can
afford to spend money on improving the countries stability and helping
to decrease the damage from an earthquake. An example of a MEDC is
Kobe, in Tokyo, where in January 1995; an earthquake that measured 7.5
on the Richter scale hit the city. A LEDC is a less economically
developed country and therefore cannot afford to spend money to
protect the country from earthquakes. An example of an LEDC is
Armenia, in Columbia, where on the 25th January 1999; an earthquake
measuring 6.3 on the Richter scale was the worst earthquake the
country had experienced since 1983.
As MEDC's have more money to spend on prediction methods, I would
expect there to be less deaths and damage in MEDC's than in LEDC's.
This is due to a number of reasons. Firstly, because MEDC's are more
economically developed, they can afford to spend money on prediction
methods, such as GPS satellite, which is when data is sent from
satellites to computers with information such as plate movement and
changes in the earth's surface. This prediction method is very
accurate; however, a disadvantage is that if the computers fail then
all of the data will be lost. Also, the fact that MEDC's have more
money would also mean that they can spend more money on preparing the
country for an earthquake. This can be done by reinforcing the bridges
and by starting to make earthquake proof buildings. Also, the
government could give out information of what to do if an earthquake
strikes. This could be posted to each person's house explaining the
key steps involved. In comparison, as LEDC's do not have as much
money, they cannot afford to spend money on earthquake precautions.
Therefore, LEDC's have poor quality building and precaution methods,
whereas MEDC's have sophisticated building and prediction and
prevention methods.
An example of an earthquake in an MEDC is the earthquake that occurred
in Kobe, Japan, in January 1995.
LEDCs have fewer resources and infrastructure than MEDCs. This means that when a natural disaster occurs, the response is slower, rebuilding is slower and there are many more lifelong injuries and deaths. LEDCs have less money provided by the government, therefore won't have the money to fix the damage. The buildings in LEDCs are often poorly designed and constructed, leading to greater destruction. The poor infrastructure is easily damaged due to all means of communication like roads and bridges being destroyed.
On February 4th 1975 in Haicheng China there was a magnitude 7.5 earthquake. Over a period of months there were changes in elevation in land, ground water and unusual animal behavior which are all precursors to an earthquake. Days before the 7.5 magnitude earthquake there were foreshocks that triggered an eviction warning that effectively saved over 150,000 lives or injuries. This is a pro as this forecast saved thousands of lives and had the people of this area (knowing this was a place of seismic activity) took precautions, like that of earthquake resistant buildings, evacuation points, preparing disaster supplies among other preparations the following may not have happened or would have been less of a disaster.
New Madrid earthquake of 1811-1812 was known to be “one of the most powerful earthquake felt throughout the Eastern United State”(2,75) . “December 16, 1811 at 2 a.m”(1). , the first earthquake had struck in the Northern part of Arkansas through Missouri. “This earthquake occurred in Central Mississippi Valley”(2,2) . New Madrid fault is located in the northern part of Missouri and southern part of Illinois. On the morning of December 16, 1811, when the earthquake struck; “people were scared”(10,26) , they ran out of their houses as the trees were falling onto the ground and the ground was breaking up. After the earthquake ended, around 7 a.m., one of the largest aftershock occurred and it was known to be a destructive shock because
On Earthquakes An earthquake is a shaking or trembling of the crust of the earth caused by underground volcanic action or by the breaking and shifting of rock beneath the surface. The volcanic action and shifting rocks create strain which continues to build to a sudden release of pressure resulting in a shock wave. The vibrations produced in the crust can vary from barely noticeable to enormously destructive. Shock waves can be classified into two broad categories. Waves that send particles oscillating back and forth in the same direction as the waves are traveling are called primary.
The dangerousness of earthquakes are rated from one to ten. One being you aren’t able to feel it and ten being VERY powerful. There was a deadly earthquake, almost no one survived. A deadly 7.2 earthquake occurred in the Central Philippines. All signs and clues pointed to the East Bohol Fault. A 6 rated earthquake that happened before, injured 300 people and caused a tsunami. But the 7.2 earthquake didn’t cause any tsunami. All of the dangerous earthquakes damaged ports, schools and airports; even a hospital collapsed killing at least 18 people. Children were injured in stampedes at two sports complexes while others rushed to the exits. Five people were killed in a earthquake - triggered landslide. People respond to a natural disaster by gathering resources, spreading the word, and government help.
Earthquakes can be very dangerous but what matters the most is that everybody is safe, and that we need to work together. One earthquake, in the Philippines, was truly devastating. It was classified as a 7.2 magnitude. The Philippines responded very well by gathering their resources, spreading the word, and giving donations. They bounced back very quickly.
The New Madrid Earthquake is referred to the area that exposed to the robust earthquakes in the United States of America. The area is located in Southeastern Missouri, Northeastern Arkansas, Western Tennessee, Western Kentucky and Southern Illinois, which is the most active seismic in the USA east of the Rocky Mountains. Historically, in 1811-1812, the New Madrid seismic zone suffered a sequence of earthquakes that included three very large earthquakes estimated to be between magnitude 7 and 8, which led to destroy most of the buildings. Therefore, the man-mad infrastructures were a main cause of injuries and deaths among population (United States Geological Survey, 2016).
January 12, 2010 became the moment of tragedy for the population of Haiti: an earthquake of terrible force stroke the small island, killing and injuring thousands of people. The earthquake turned into a devastating power, destroying everything in the epicenter and miles beyond. It was the most powerful earthquake in Haiti in more than 100 years. Now, several months after the tragic event, Haitian authorities still work to restore the economic and social stability in the region. Earthquakes are difficult to predict the Haiti earthquake did not have any warning signs or foreshocks. It was equally unexpected and powerful. The aftershocks that followed confirmed the complexity of the natural processes that usually occur during earthquakes.
Earthquakes are measured typically by the Richter scale the levels on the Richter scale are 2.5 or less usually not felt, 2.5-5.4 often felt minor damage, 5.5-6.0 slight damage to buildings and structures, 6.1-6.9 may cause excessive damage in overpopulated areas, 7.0 - 7.9 major earthquake with serious damage, 8.0 or greater is a great earthquake which can totally destroy communities near the epicenter. Even before the terrible earthquake Haiti was one of the poorest countries with over 70 percent of population living under the poverty line. The United States is only at a 14.5 for our poverty rate putting Haiti very far ahead of us. Since the earthquake 500,000 still remain homeless because rebuilding will cost a lot of money they still simply don’t
Since the end of the World War II, nuclear energy has been one of the most potent forces on the planet. Nuclear powered submarines and aircraft carriers dominate the oceans and nuclear power plants provide nearly 20% of the nation’s power supply (Bayh & Gregg, 2014). All of this nuclear production produces tremendous amounts of nuclear waste. This waste must be disposed of safely, creating a problem for scientists and politicians for decades to come.
Earthquakes happen about 20,000 times a year worldwide. They can destroy almost anything.In 2011, Japan had 9.1 magnitude earthquake, close to the highest magnitude of 9.2 in Alaska. They suffered tremendous damage from such a strong earthquake. The year before Haiti suffered from a 7.0 magnitude earthquake, still quite high compared to small tremors at magnitude 0-2. Japan recovered and rebuilt much faster than haiti did though. Haiti isn't even quite done recovering yet. The earthquakes had such different effects on the countries because of their economy, the condition of their people, and population rates.
The effects caused by earthquakes are devastating. They cause loss of human life and have effects on infrastructure and economy. Earthquakes can happen at any time anywhere. In January 12, 2010 an earthquake of a magnitude of 7.0 hit the nation of Haiti. An estimation of 316,000 people were killed, and more than 1.3 million Haitians were left homeless (Earthquake Information for 2010). Haiti was in a terrified chaos. After the earthquake, families were separated because many of the members were killed. Homes, schools, and hospitals were demolished. People lost their most valuable belongings. It will take time for the country to recover from this terrible disaster. The long damages are economic issues, health-state, and environmental issues that effect in the beautiful island of Haiti.
A lot of people die from the falling rubble of collapsed buildings when earthquakes occur, not the actual earthquakes themselves. Technology does exist to stop earthquake destroying cities. If technology likes this exists why do earthquakes still effect people the way they do? The problem is that the expenses are still very high. And what about the buildings that already exist? They will have to be rebuilt from scratch, so the engineering used can be put on place. There are two main ways that you can strengthen a building against earthquakes. You can make the building stronger, so the quakes don’t rock the
Earthquakes are vibrations felt at the surface of the earth which are caused by disturbances of the energy in the earth's interior. These vibrations are known as seismic waves. (Skinner Robinson McVerry 1) There are different type sof seisimc waves such as Primary (P) waves, whcih travel the fastest, Secondary (S) waves which cause the earth to vibrate vertically, Surface (L) waves. P and S waves are "affected by changes in the density and the rigidity of the materials through which they pass." (Columbia Encyclopedia) Earthquakes vary in their intensity and duration. Often times they are strong enough to cause massive destriction. Tall buildings often suffer as a result of these natural disasters. In recent years this has become a larger and larger threat with both the number of large buildings, and their number of occupants increasing. In an effort to try to minimize the damage caused by earthquakes many some engineers focus primarily on designing and constructing earthquake resistant buildings. Earthquake engineers have gathered much of their information from analyzing past earthquakes, and learning which buildings can and can't withstand the tremors. The goals of these engineers is to design buildings that can withstand moderate earthquakes and obtain minimal damage, and that the buildings will not collapse lowering the probability of human deaths.
Earthquakes belong to the class of most disastrous natural hazards. They result in unexpected and tremendous earth movements. These movements results from dissemination of an enormous amount of intense energy in form of seismic waves which are detected by use of seismograms. The impact of earthquakes leaves behind several landmarks including: destruction of property, extensive disruption of services like sewer and water lines, loss of life, and causes instability in both economic and social components of the affected nation (Webcache 2).