Seismic Waves Advantages And Disadvantages

In Valdivia, Chile 1960 an earthquake changed the lives of many. An earthquake is the violent shaking of the ground that will destroy homes, buildings, landforms, historical monuments, and lives. Earthquakes begin with the breakage of rock along a fault line. When two tectonic plates rub against each other they create an earthquake. Earthquakes will ride along a fault line which will determine how long the quake will go on. The larger and longer the fault like the bigger the earthquake. Earthquakes send out waves, primary waves or, p waves and secondary waves or, s waves travel along the interior of the earth. These two waves are called body waves. While detecting the waves, the primary waves appear first then the secondary waves. Primary waves travel through solids, liquids, and gasses, which means they are about to travel through the liquid center. Secondary waves are only able to travel through solids which are why scientists have found that there is a loss of these waves once they reach the center.

Long-term impacts Disease may spread. People may have to be re-housed, sometimes in refugee camps. The cost of rebuilding a settlement is high. Investment in the area may be focused only on repairing the damage caused by the earthquake. Income could be lost. Important natural and human landmarks may be

When a large magnitude earthquake strikes, roads might buckle, dams sometimes fail, and buildings can collapse. As more earthquakes occur, building regulations have been altered to ensure that buildings experience minimal damage. The Trans-Alaskan Pipeline System (TAPS), which transports oil from Prudhoe Bay to the Gulf of Alaska, had engineering in place so when the earthquake struck the Denali fault in Alaska in 2002, the pipeline didn’t leak any oil (Nyman, Johnson, and Roach, 2003). The success of the pipeline came from its supporting structures. The engineering used in the TAPS should be applied to buildings in areas that are also prone to large magnitude earthquakes, such as Washington and California. California is home to the San Andreas fault, a major transform fault, just like the Denali, and Washington is home to the Seattle Basin, whose geometry and geological units amplify main and aftershock waves. Washington and California should first implement better building regulations, and if the premise is successful, it could be applied anywhere large magnitude earthquakes occur.

Earthquakes are caused when two blocks of earth suddenly slip past one another. The surface where the two blocks slip is called the fault. The earthquake starts below the earth’s surface at the hypocenter, and the location above the hypocenter is called the epicenter. Earthquakes can have foreshocks which is a smaller earthquake that happens before the larger quake. Earthquake can also

2. Would you be more in danger if you were underground and an earthquake or other natural disaster

There is no shortage of earthquakes in Southern California. On any given day this area sees numerous earthquakes, though most are barely even felt. The concern here is what will happen when another earthquake occurs in a large dense area such as Los Angeles County, California. One question concerns earthquake preparedness of residents in this region. Do residents know what to do in order to prepare for an earthquake? Are residents prepared for a medium to large sized earthquake? Another question is, how prepared are buildings when it comes to the shaking from a medium to large earthquake? Will these buildings protect residents and employees, or do they pose a severe threat when faced with another earthquake?

An earthquake would be classified as a sudden ferocious shaking of the ground, typically causing great obliteration because of manoeuvre within the earth’s crust or volcanic action.

In other words, “Ordinarily, people think that wealth is increased and life is far more attractive and thrilling; for if this were not so, who would be drawn into New York, Chicago, Los Angeles, Detroit, Philadelphia…”(Mumford). The development of skyscrapers was only introduced for cities to boast about the amount of money they have, so then people would be captivated by a city's image and heighten their reputation. A consequence of this action is the establishment of multiple skyscrapers creates a safety hazard for the public. Namely, if there was ever an earthquake that was strong enough to cause the skyscrapers to break apart, people’s lives would be in danger as the people would be trapped inside or the debris would be crashing down upon the streets (Twenties in Contemporary Commentary, The). Public services such as policemen or firefighters were not equipped or prepared to handle these types of situations, if one was ever to occur. Skyscrapers were not only a waste of money, but a result of this impractical building could harm the lives of citizens living in

By definition an earthquake is the tremor of the surface of the Earth, sometimes severe and devastating, which results from shock waves generated by the movement of rock masses deep within the Earth, particularly near boundaries of tectonic plates. The tectonic plates involved in the 2010 Chile earthquake were the Nazca and South American plate, and like all tectonic plates, they often move due to convection currents within the Earth’s mantle. This movement can cause tectonic plates to collide, separate or slide past one another. For thousands of years, the oceanic Nazca plate has been colliding and slowly subducting underneath the continental side of the South American plate. Earthquakes can be caused by a variety of reasons, but the 2010 Chilean earthquake was caused by these two tectonic plates having an ocean-continental collision at a convergent boundary.

What is an earthquake and why do they happen? : An earthquake is vibrating of the ground caused by the rapid breaking and motion of large parts of the earth’s rocky outermost crust. Earthquakes

Earthquakes are sudden trembling or shaking vibrations. Earthquakes are large spinning spiral winds, that comes together by rocks underground breaks along the fault. There are two types of earthquakes, there is the body waves and the surface waves. Body waves travel at 7/8 km. The body wave is the fastest of the two waves. The surface waves act as a gravity waves that are between two fluids with different density. Unlike hurricanes,

The energy originates from the hypocenter which is usually deep below the earth’s surface. The epicenter is exactly above the hypocenter. There are three types of waves which occur during an earthquake: compressional (P) waves, seismology (S) waves, and surface waves. There are four different types of fault lines which include: normal faulting, reverse faulting, and strike slip, oblique slip. Earthquakes have different consequences on different landscapes. Some earthquakes cause surface faulting which appears as a crack on the ground. It is possible for ground failure to occur which can generate liquefaction, lateral spreads, landslides, etcetera. Depending on the location of the earthquake, it can cause secondary threats such as tsunami, building fires, dam failures and other disastrous

Helens exploded but what is an earthquake? Earthquakes are the earth-shaking vigorously because the earth crust is moving which is caused by the tectonic plates. The lithosphere is made up of the earth crust and the uppermost mantle which is broken into the tectonic plate, that slowly move over a mechanically weaker layer, the asthenosphere, which is part of the upper mantle. These plates have different boundaries in the world, where two different plates meet, all of the boundaries are shown in this map. These plates are pushed together from interior earth, the plate's often collided near the boundaries causing volcanic eruption, earthquakes and tsunamis. There are different types of collision that cause different effects on our earth. Convergent boundaries- when two plates slide up against each other and one may be subducting under another . Divergent boundaries- are two plates pulling away from each other, which can create new

Another human factor is the earthquake mitigation through education and community awareness. Schemes such as the one in Sichuan, China helped to save thousands of lives. The weekly intervals of training in case of an earthquake, educated children and adults of what to do when the quake struck. Evacuation schemes such as the window slides or hiding under tables was reported to have saved thousands when the magnitude 8.0 hit the area in 2008. However, some were not saved due to their unwillingness to move and evacuate the area. Some people of the village, notably the poorer and elderly refused to leave as they didn’t want to leave all they owned behind.

     An Earthquake is the shaking of the earth's surface caused by rapid movement of the earth's rocky outer layer. The sudden shaking of the ground that occurs when masses of rock change position below the Earth's surface is called an earthquake. The shifting masses send out shock waves that may be powerful enough to alter the surface of the Earth, thrusting up cliffs and opening great cracks in the ground.