Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Effects of earthquake Essay
The consequences of earthquakes
Effects of earthquake Essay
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Effects of earthquake Essay
There are many pro’s for attempting to forecast an earthquake or volcano. Forecasting an earthquake or eruption saves lives and property, mainly by preparation, as there is no way to prevent these events with today technology.
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.
There are also many cons for attempting to forecast earthquakes and volcanic activity. A couple of possible cons are false warning or evacuations which cost the people money as well as their economy (Example: if this was a tourist attracted place, then they would have less tourists and thus less money). I spoke of an example of a pro for the forecasting of the Haicheng earthquake above, this was also a con as I will explain in this next paragraph.
After the Haicheng earthquake forecast, the area essentially would feel more optimistic on the forecasts of earthquakes. The following year in July 28, 1976 a magnitude 7.6 earthquake struck the city of Tangshan and caused as estimated 250,000 fatalities and 164,000 injured, without a warning or forecast. As you can see the con in the situation I just described would be the fact that one good forecast created an overly optimistic population in regarding to forecasting earthquakes.
Volcanic forecasts are more accurate then earthquake predictions. These predictions are generally forecast in the same way as an earthquake (temperature increases in geothermic waters gaseous concentrations, changes in elevation of land and water etc… Because we generally know where Volcanoes are, we can predict when an eruption may take place.
In March 18, 1880 Mount St. Helens there was a catastrophic eruption that caused a huge volume of ash; the ash plume would be over central Colorado within 16 hours. After years of dedicated monitoring (knowing where to volcano is, unlike an earthquake not knowing exactly where this geological even is exactly) there was been increasing accuracy in forecasting eruptions.
Many of us know Mount Shasta to be a beautiful mountain and a popular tourist location in California. However, this mountain is much more than that, this mountain is actually a volcano. Volcanoes come with a number of hazards and a volcano of this size is of no exception. Previous eruptions on Mount Shasta have given us an idea of the power this volcano has and the damage it may do. With this information scientists are able to predict what may happen should another explosion occur.
In 1910 a series of fifty-two earthquakes struck Arizona between September 10th-23rd and it caused much of the Flagstaff residents to flee the area as even strong households cracked and chimneys crumbled. The fifty-two earthquakes were all light-shock earthquakes with magnitudes between 4.0-4.2 that came right after another. If only one earthquake occurred in that timespan then it is likely that only objects would be knocked from shelves but no damage would be done to infrastructure, but the earthquakes happened right after another causing significant slight
Although volcanoes are difficult to predict, geologists have made many efforts in order to caution the people of Orting and other surrounding towns of possible lahar slides. Residents have been made aware of emergency response plans and they know the proper precautions to take in the case of a volcanic activity emergency. Sirens have been put in place by the fire department and governing bodies of surrounding communities to detect volcanic activity and warn the community of possible slides.... ... middle of paper ...
I think being prepared and educated will save many lives if and when we get the big one in the Cascadia region. Works Cited http://www.crew.org/cascadia http://www.crew.org/sites/default/files/cascadia_subduction_scenario_2013.pdf http://www.pnsn.org/outreach/earthquakesources/crustalfaults www.iris.edu/hq/files/programs/education_and_outreach/aotm/5/2.Subduction_Rebound_Background.pdf www.crew.org/sites/default/files
Science of Volcanic Activity Prediction Since the dawn of history, volcanoes have been an awe inspiring feature of the earth that has frightened and intrigued mankind. Volcanoes have taken the lives of over 250,000 people in the last three hundred years and changed the lives of millions of others, but up until recently humans have had very little understanding of the volcanic processes that presage an eruption. The advent and implementation of new technologies and scientific methods has allowed us to begin to comprehend the inner workings of one of nature's most powerful forces. Through understanding how volcanoes work, volcanologists hope to accurately predict when an eruption may occur, what the magnitude and type of eruption will be, and what effect it will have on the surrounding area. Accomplishing this daunting task will ensure that in the future when an eruption occurs, the population at risk will be prepared and lives can be saved.
Hazards pose risk to everyone. Our acceptance of the risks associated with hazards dictates where and how we live. As humans, we accept a certain amount of risk when choosing to live our daily lives. From time to time, a hazard becomes an emergent situation. Tornadoes in the Midwest, hurricanes along the Gulf Coast or earthquakes in California are all hazards that residents in those regions accept and live with. This paper will examine one hazard that caused a disaster requiring a response from emergency management personnel. Specifically, the hazard more closely examined here is an earthquake. With the recent twenty year anniversary covered by many media outlets, the January 17, 1994, Northridge, California earthquake to date is the most expensive earthquake in American history.
During the earthquake, the people of the entire island felt the shaking of earth beneath them and the building for a few minutes. In Nanto, the area of the epicenter, almost all of the buildings collapsed. In Taichung, a close metropolis, many buildings collapsed or bent. For the rest of the night, all the people in Taiwan were in the terror from numerous aftershocks. According to one citizen`s description, although the building she lived in was not damaged, her family slept in their car all night for fear that their home would collapse in the next aftershock.
Volcanoes can be very deadly but the location can also determine that. Zones are what tells people how dangerous they are. In document c it explains each zone. There are five zones by one being the harshest zone and five being the safe zone. People live in all zones and that's not good at all. Documents C says " There is an area around an active event where likelihood to be killed is extremely high." Volcanoes are always capable of surprises and never up to something good.
Mauna Loa has erupted 39 times. “According to USGS estimates, the volcano has erupted an average of once every 6 years over the past 3,000” (Mauna Loa Volcano). As a matter of fact, a thermal map helps warn scientists if it’s about to erupt. “Mauna Loa’s most recent eruption occurred from March 24th to April 15th, 1984” (Wikipedia). A thermal map would help scientists to see if there is a change in temperature. Since 1832, eruptions from Mauna Loa have occurred 39
Volcanic activity is a fairly common event for the Earth. Generally, there are anywhere between 50-60 small eruptions a day) These eruptions barley register onto the Volcanic Explosivity Index (VEI), similar to the Richter scale for Earthquakes. It ranges from zero to eight, zero being the weakest and eight being capable of mass extinctions. Major Volcanoes generally erupt every 100-200 years. Every 10,000 years, A Volcano erupts with so much power that they can cause Mass Extinctions.
Volcanoes are one of the most destructive forces on Earth. It is estimated that some 500 million people live near active volcanoes (Lutgens and Tarbuck, 2013). Of the Earth's known volcanoes, 70 are expected to erupt each year with at least one large eruption each decade (Lutgens & Tarbuck, 2013). As populations continue to increase and more people are attracted to the beauty surrounding these areas, the immediate threat to humans from these sometimes sleeping giants grows. Due to this, the study of volcanoes and the service that volcanologists provide to the public by way of information and predictions on activity is immeasurable.
Rift eruptions are common at ocean ridges like the Mid-Atlantic Ridge. (Sandner, 532-534) Maybe earthquakes and volcanic activities sound really scary to people, and always bring destructive damage to people, they are natural phenomenons that we should learn to understand and accept. It is impossible for people to completely avoid them all, but we can use our knowledge to predict them and reduce the damage to the least.
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).
There are other short-term effects, and these effects don’t just take place in the area of an eruption, but expands to other parts of the world. Globally, what has become an issue of its own is climate change. In the Encyclopedia Britannica, Jackson (2013) defined climate change as a “periodic modification of Earth's climate brought about as a result of changes in the atmosphere as well as interactions between the atmosphere and various other geologic, chemical, biological, and geographic factors within the Earth system.” With all of the debris that enters the atmosphere from eruptions, volcanoes can make an impact on climate change. Volcanic activity can cause global cooling, but some sources say that it has the potential to impact global warming as well, due to the amount of carbon dioxide (CO...