Seismicity Case Study

In conclusion the recent conception and development of plate tectonic theory has greatly aided our understanding of the distribution of seismic events. We now understand that there is a correlation between earthquakes/volcanoes locations and their proximity to a plate boundary plates are continually moving and earthquakes and volcanoes are found along these boundaries. Exceptions to this rule such as Hawaii also help prove tectonic theory due to their unique creation. Whilst this has helped our understanding we also recognise the fact those in LEDCs with poor access to education are unaware of plate tectonic theory so they cannot understand the hazards that some countries face, nor have the means to mitigate against them thus worsening the

Earthquakes have afflicted the world since its inception. The sudden release of energy from volcanoes or displacing of earth plates can result in disasters of extreme magnitude. These usually naturally occurring phenomenon have been responsible from wiping out entire towns throughout history and until today continue to produce major loss of life and infrastructure. It can take years for a city or country to recover from a major event of this kind and when a third world country is involved, the result is usually exponentially worse than in a developed country. In the past decades Japan, Chile and Haiti have suffered the devastation an earthquake produces. This document will concentrate in Haiti, a small country in the Caribbean. On

Record your answer from Lab Exercise #1, Step 1, Question 2. What time in hours:minutes:seconds GMT did the S waves arrive?

According to the research report, it will cause thousands of people die, towns submerged, buildings and bridges damaged once a huge earthquake and tsunamis happened on the Pacific Northwest area near American coast. And losses will be estimated at over 5 billion dollar US dollars. This shocking article was composed by seismic safety advisory committee in Oregon. According to materials, a super-strong earthquake once happened in A.D. 1700 Cascadia Subduction Zone (CSZ) on the Pacific Northwest coast. There are some experts forecast that another super-huge earthquake will occur in the future. The report has shown that once the earthquake occurs, the regions from North California to British Columbia Coastal region will suffer devastation, cause heavy casualties. Water and electricity shortage issues definitely follow this heavy disaster, meanwhile, communication and heating system and gas supply will definitely broken off in the light of this earthquake. The CSZ is a 1,000 km long dipping fault that stretches from Northern Vancouver Island to Cape Mendocino in northern California. It separates the Juan de Fuca (Juan

The earthquake was felt from southern Oregon to south of Los Angeles and inland as far as central Nevada, an area of approximately 200,000 square miles. The ground motion caused by the earthquake source is recorded by instruments called seismographs. The zigzag trace made by a seismograph, called a "seismogram," reflects the changing amplitude and frequency content of the ground shaking beneath the instrument (usgs.gov). Using seismograms, scientists can determine the time, the epicenter, the depth, and the type of faulting of an earthquake as well as estimate how much energy was released by it.

In recorded history, there have been 151 earthquakes in Nevada that were a magnitude of 3.5 or higher. As previously mentioned, the mountain ranges of Nevada are typically bound on one side or the other by a fault. There are quaternary faults that range in ages from less than 150 years to around 1.8 million years in existence. The property damage in Nevada from earthquakes was .2 million dollars between 1196 and 2014 based on information from department of energy for the state. As we studied in our textbook, earthquakes can by a number of things, such as shifting faults, or volcanic

Imagine if you had to restart your life, new shelter, new job, new lifestyle. Well locals or people in the Philippines had to restart their life when an earthquake with an magnitude of 7.1 hit the country and destroyed people’s lives. The earthquake had a devastating 7.1 magnitude. The earthquake hit the Philippines on October 15th, 2013. The likely culprit of the earthquake was the East Bohol Fault because the two tectonic plates were sliding against each other and the creates an earthquake. Sadly, earthquake killed more than 90 people. Ports, schools, and airports were damaged. A hospital collapsed then that lead to a killing of 18 people. Children were also injured at sports complexes because people rushed the exits when the the ground started to shake. Lastly, 5 people were killed in a landslide that was triggered from the earthquake. What really matters though is how people respond to the

An earthquake is where two transform plate boundaries slide and creak the earth. This is what happened in the Philippines. Although it was in 2013 the people are still in need of help to get back to their daily lives. The Philippines earthquake had a magnitude of 7.1. This earthquake was gigantic, and it took down many buildings that were in its path. Lucky the children were not in school that day because of the Muslim holidays the earthquake caused the school to collaspe. If the children were in school, then it would have killed most of the kids.There were 2,100 aftershocks. The day of the quake was October 15, 2013. People respond to a natural disaster by gathering materials and donations, spreading the word, and the government's aid.

Have you ever been in a deadly earthquake? In 2013, the people of the Philippines experienced one. A 7.1 magnitude earthquake that affected around 43,000 people with 2,211 aftershocks that ended up killing a total of 185 people. Earthquakes are known as one of the most dangerous natural disasters. This horrific event happened October 15th, 2013. The earthquake hit hardest in the central Philippines, it was reported to be caused by the East Bohol Fault. People act in a response to a natural disaster by gathering resources, spreading word, and government aid.

A ‘hazard’ can be defined as a geophysical process operating within the lithosphere, atmosphere, hydrosphere or biosphere which could potentially lead to the loss of human life or property. However, an earthquake only becomes hazardous and therefore needs management if it occurs within close proximity to a vulnerable population. To some extent, any human settlement around the world situated close to or on top of an area of seismic activity is vulnerable. However, not all nations suffer equal devastation.

A hazard can best be defined as a 'situation that poses a level of threat to life, health, property or the environment.' The overall impact of earthquakes as a natural hazard varies greatly from one place and timeframe to another. As do the types of hazards, which are categorised into primary and secondary. Primary hazards are created by the direct seismic energy of an earthquake; this could include liquefaction, slope failure and tsunamis. These primary hazards can in turn trigger secondary hazards such as floods, fires, disease and destabilisation of infrastructure. A number of factors play a part in determining the severity

The Oral and Dental Hospital of Jenderal Soedirman University was built in 2008. This hospital’s building consists of 4 stories equipped with inpatient rooms, X-ray rooms, and laboratory. It is expected that with a main function as a public facility with a large number of people doing activities within it, the building has a high level of security when an earthquake occurred. The aim of this study is to perform a preliminary seismic hazard assessment, i.e. an evaluation using a Rapid Visual Screening method and a tier 1 evaluation using FEMA 310. The results of the Rapid Visual Screening were a final level 1 score compared with a cut-off score of +2.00. If the final level 1 score were less than or equal to +2.00, the building requires the tier

Earthquake Hazards occur when there are adverse effects on human activities. This can include surface faulting, ground shaking and liquefaction. In this essay I will be discussing the factors that affect earthquakes, whether human such as population density, urbanisation and earthquake mitigation or physical such as liquefaction, magnitude, landslides and proximity to the focus.

Earthquakes pose a significant risk in many regions of the Sub-Saharan Africa (SSA), more particularly along the tectonically active East African Rift System (EARS). Further away from this rift system, the remainder of SSA is largely considered a stable intra-plate region characterized by a relatively low rate of seismicity. Nonetheless, several large earthquakes have been reported in historical times. While most of earthquakes in Sub-Saharan Africa occur along the EARS (inter-plate seismicity), it must be noted that a damaging earthquake can occur anywhere, especially as cities grow and many buildings are constructed without taking potential ground shaking into account. Even moderate-sized events can prove disastrous should it occur near

Seismic hazard analysis is an important tool in mitigating risks in the event of a disastrous seismic event like an earthquake. This can be done by studying the behaviour of the soil in locations that are within seismically active regions using several geophysical methods. This project employs the use the cost-effective microtremor method in studying the site response in Kathmandu, Nepal, following the April 25, 2015 M7.8 Gorkha. Analysis of the field data will yield information that could be used by the Government and people of Kathmandu, Nepal, in reviewing their building construction codes and other policies to minimize casualties in the event of an earthquake. This is very important considering the location of Kathmandu which is within the seismically active Himalayas.