According to the United States Geological Survey (USGS), the New Madrid Seismic Zone (NMSZ) stretches from just west of Memphis TN., into southern Illinois and “several of the largest historical earthquakes to strike the continental United States occurred in the winter of 1811-1812 along the NMSZ. (USGS, 2007). This means when another major earthquake hits the region, cities like Memphis TN., Cape Girardeau and St. Louis MO., Paducah KY., and perhaps Nashville TN. and Little Rock AR., will be severely impacted.
Emergency managers in those urban areas and also all the surrounding rural areas have been making plans and preparing for “the big one” and many participated this past spring in the “National Level Exercise (NLE) 2011, one of the largest emergency exercises in U.S. history and the first of its scale to simulate a natural disaster.” (Pittman, 2011).
Emergency planning for a 7.8 magnitude earthquake in the NMSZ for the city of Memphis needs to follow the guidelines for a catastrophic event, i.e. an event that is so large in scope that normal jurisdictional mutual aid agreements will not suffice. The emergency plan for Memphis must provide for response and recovery aid from other states, particularly those that may not be impacted by the event. In addition, support from the federal government of the United States should be prearranged, and perhaps support from neighboring countries like Canada and Mexico, may also be prudent.
Infrastructure and structural damage to buildings and homes could necessitate mass evacuations from the city of Memphis after the quake and that will require rapid repair of the major transportation routes in to and out of the city, as well as repairing rail lines and airport runways. Predetermined destinations for the evacuees must be planned for as well. Many residents will choose to evacuate on their own if they are able and established resource (gas, food, water, etc) provisioning along the evacuation routes will need to be in place.
Because Memphis is located on the largest river system in the country possible earthquake affects on the river itself must be considered. The long-term consequence of disrupted shipping of goods along the Mississippi River corridor has the potential to affect international food supplies. The reports from the 1811-1812 earthquakes in the NMSZ provide indications that even the course of the river could be altered and that possibility also has wide reaching affects on commerce, settlement, economic and social structures now in place.
The Long Point Fault is located in Harris County, which covers 83,450 square miles located with in Houston, Teaxas City Limits. Research specifies that there are three sections of the Long Point fault that appear to be active; some sections of the Long Point fault have averaged more than 2 cm per year of vertical offset over the last 20 years. Evidence of the faults concludes it is a natural fault. The reason for activity is not caused by man, even though man’s activities are not helping the issues, but clearly humans are not the initial cause, biological activity can be in fact an adiitional cause for its movement. A brief description of the type of fault and its relationship with the strata and the faults beneath the Houston area, are at depths of 1,000 to 4,000 m. They have been well-defined through the study of well logs and seismic lines. Studies have resuted in assumuptions that some of these subsurface faults penetrate younger sediments at shallower depths, and contain faults that have of set the present land surface to produce recognizable scarps. (Gabrysh)
The earthquake, whose epicenter was located north of Evansville, was felt through most of Indiana and surrounding states, as reported by the Indianapolis Star. The quake was not the largest in Midwestern history, only registering a 5.0 on the Richter scale, nor did it do much damage. However, it was a wake-up call reminding those who haven’t paid attention to past warnings about the possibility of larger, more destructive earthquakes.
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
The scenario mentioned above was based on the rupture located along the Cascadia fault line. This fault system runs from Northern California to Vancouver Island about 700 miles off the shore (FOX5). Scientists use to believe that the San Andreas Fault was where a large earthquake tsunami would originate, but recently their attention has shifted to the Cascadia subduction zone which is now said to be much more dangerous than previously thought (FOX5). Recent earthquake events have added even more tension and possibility for a large-scale tsunami. On March 10, 2014, a 6.8 magnitude earthquake struck off the coast of Northern California, which put a lot of stress on the Mendocino Triple Junction (Davidson). The Mendocino Triple Junction is where three tectonic plates collide, and is very unstable (Davidson). This junction has all this built up pressure and is about ready to explode. Scientists believe that this junction will be the origin of a tear along the 680-mile long Cascadia Subduction Zone. (Davidson). The disaster that follows will be considered the United State’s largest modern-day earthquake.
With the recent earthquakes in California, many are worried about the next earthquake that could be the potential “big” one that many geologists have been predicting for many years. The Cascadia subduction zone is also known as the CSZ megathrust fault. It is roughly 1000km long, a dipping fault that stretches from the Northern Vancouver Islands to Cape Mendocino, California. The zone passes through British Columbia, Washington, Oregon and into California. The Cascadia region has experienced several types of earthquakes and it is very likely to experience similar quakes in the near future.
It was striking in New Orleans in July 2004. Unfortunately, this exercise was not successful because of three reasons: the funding was cut off for the follow-up to the exercise, while planning it became evident that multiple workshops would be required, and the issue for medication for hurricane Katrina victims was not finalized. A scenario-based planning exercise process was quite effective. As Katrina approached, state officials knew they were not prepared enough, and it had not been completed. However, after the exercise, the government and local originations have learned how to prepare and practice in emergency
Both man-made and natural disasters are often devastating, resource draining and disruptive. Having a basic plan ready for these types of disaster events is key to the success of executing and implementing, as well as assessing the aftermath. There are many different ways to create an emergency operations plan (EOP) to encompass a natural and/or man-made disaster, including following the six stage planning process, collection of information, and identification of threats and hazards. The most important aspect of the US emergency management system in preparing for, mitigating, and responding to man-made and natural disasters is the creation, implementation and assessment of a community’s EOP.
Bissell, R. (2010). Catastrophic Readiness and Response Course, Session 6 – Social and Economic Issues. Accessed at http://training.fema.gov/EMIWeb/edu/crr.asp
Federal intervention in the aftermath of natural disasters began after the San Francisco earthquake in 1906. This 8.3 magnitude earthquake killed 478, and left over 250,000 homeless. While the disaster itself was obviously unavoidable, the subsequent fires that burned throughout the city were a result of poor planning. (1, 17) In an effort to consolidate existing programs, and to improve the nation’s level of preparedness, President Carter created FEMA in 1979. Initially, FEMA was praised for improving communication between various levels of government, and multiple agencies during a crisis. (1,19)
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.
benchmark for the future, and integrated investigation into the effects of earthquakes in the U.S.
Earthquakes commonly have consequences that are unexpected by an environment they occur in. The consequences may be tsunamis, buildings collapsing, structures distorting, landslides, and liquefaction.
A disaster is not a simple emergency. A disaster is that point when a human is suffering and has a devastating situation which they themselves need help from others to survive. Regardless if natural or human caused, a disaster causes a vast amount of issues in the community. In the simulation of “Disaster in Franklin County reveals that preparation is key and even with that more can be addressed. A community nurse remains an essential part of the team involved in a disaster including before, during, and after the event.
In the early morning hours on January 17th, 1994 a very violent tremble took place across Los Angeles, California area that left fifty-seven people dead, more than 7,000 injured, more than 20,000 homeless and left over 40,000 buildings damaged. Around 4:30 a.m. a horrific 6.7 magnitude earthquake, that tested building codes and earthquake-resistant construction, shook Los Angeles, San Bernardino, Ventura, and Orange Counties with the most intense damage occurring in Sherman Oaks and Northridge. The earthquake caused several bridges and overpasses to collapse closing sections of the Santa Monica Freeway, Simi Valley Freeway, Golden State Freeway, and the Antelope Valley Freeway. There were also several fire outbreaks throughout the San Fernando Valley, Malibu, and Venice area because of underground gas lines that had been ruptured during the earthquake that caused additional damage.
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).