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Como sobrevivir a un ataque nuclear (en inglés)

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Como sobrevivir a un ataque nuclear (en inglés) Empty Como sobrevivir a un ataque nuclear (en inglés)

Mensaje por ivan_077 Agosto 17th 2017, 01:40

How to Survive a Nuclear Attack
BY JOHN PERRITANO POSTED AUG 15, 2017
The U.S. Army Tactical Missile System (ATACMS) fires a missile into the East Sea during a South Korea-U.S. joint missile drill aimed to counter North Korea's ICBM test on July 29, 2017. South Korean Defense Ministry via Getty Images
The U.S. Army Tactical Missile System (ATACMS) fires a missile into the East Sea during a South Korea-U.S. joint missile drill aimed to counter North Korea's ICBM test on July 29, 2017. SOUTH KOREAN DEFENSE MINISTRY VIA GETTY IMAGES
If there's anything author Daniel Judson has learned by watching apocalyptic movies such as "Road Warrior" it's this: Always be prepared. That's why the writer of suspense novels has created a prepper's paradise of stockpiled water, food, gasoline, medication and other necessities in his Connecticut home.

Judson is not waiting for the four horsemen to arrive, mind you. It's just that he doesn't want to be caught flat-footed if a hurricane blows through — or if missiles start flying between the United States and North Korea. The saber-rattling between both nations in August 2017 has Judson and millions of others on edge. If the unthinkable were to happen, being prepared might not be good enough.

"There is a saying in the prepper community: We are only three days from anarchy," Judson says in an email. "Recent events, though, have shown us that the estimate of three days might be a little optimistic. Protecting oneself from a natural disaster like a hurricane is one thing, but radiation, in both the short- and long-term, is a different story."

The specter of a nuclear exchange between North Korea and the United States reached critical mass on Aug. 7, 2017, after President Donald Trump threatened that any attack on the U.S. or its territories by Kim Jong Un's regime would result in "fire and fury like the world has never seen before." After Trump's remark, the number of Google searches for "how to survive a nuclear attack" spiked.

That's not to say that a nuclear exchange is likely, but in general, if intercontinental ballistic missiles (ICBMs) start falling, and you live with about a 0.5-mile (0.8-kilometer) radius of a direct hit (Kim has threatened Guam and Hawaii) you can kiss yourself goodbye. But, if you want to live, your best chance is to get away from the blast area as fast as possible and burrow yourself so deeply that the resulting radioactive fallout won't kill you, or at the very least, make you sick.


Survivability Zones
"The direct effects will be survivable beyond a few miles except for the fallout plume, which could extend farther depending on wind, rain and the detonation yield," Dr. Michael May, an expert on nuclear arms at Stanford University says in an email interview.

There are three different damage zones that form during a nuclear blast, says Brooke Buddemeier, a health physicist at the Lawrence Livermore National Laboratory in California, in an email. Using a 10-kiloton nuclear blast, which is about the size of the bombs the United States dropped on Hiroshima and Nagasaki during World War II, as an example, the deadliest of these zones, the severe damage zone, will extend outward in a 0.5-mile (0.8-kilometer) radius from ground zero. In this zone, most buildings will be destroyed, and chances for survival are minimal.

The moderate damage zone extends from radius of 0.5 mile (0.8 kilometer) to 1 mile (1.6 kilometers). In this zone, buildings will experience major damage. For humans, early medical attention can significantly reduce the number of casualties.

The light damage zone extends in a 1- to 3-mile (0.8- to 4.8-kilometer) radius. A person's chances for surviving a blast in this zone are very high, especially if they are in a shelter (more on those in a minute). "Most injuries in the light damage zone are relatively minor, and most people in this area would be uninjured," Buddemeier says.

In 2007, the Preventative Defense Project at both Harvard and Stanford universities, held a workshop on what would happen during and after a nuclear blast. May, along with Ashton Carter and Dr. William J. Perry, both of whom served as U.S. secretaries of defense, summarized the workshop's findings in a report titled "The Day After: Action in the 24 Hours Following a Nuclear Blast in an American City." The portrait they paint is bleak. The group looked at what would happen if a 10-kiloton uranium bomb detonated in a major U.S. city without advance warning.

A ground burst would obliterate a city's downtown, while just outside that area, people wounded by fire, flying debris and intense radiation would more than likely die. A "plume of radioactive debris" would spread over a wide area, depending on wind and weather conditions.

"Those people who were relatively close to the detonation point, or who did not shelter themselves from the radiation (which would be most intense on the Day After and then subside with time) would receive large but varying doses of radiation," May and his co-authors write. "If the dose was intense (more than 400 rems), they would get sick and die; if strong but moderate (50 to 400 rems), they would get sick but probably recover; if moderate (below 50 rems), they would not notice the effect immediately but would have a greater chance of contracting cancer over their lifetime than if they had received no dose."

Most people within the blast area wouldn't survive, the report states. The majority of buildings would be destroyed or severely damaged. Things don't get much better away from the blast. About 5 miles (8 kilometers) out, people could be bombarded with fatal doses of radiation on the first day (depending on the prevailing winds) if they were not in a shelter.

"Within the first mile or so, little can be done," May says. "Beyond that, protective structures will help. How much depends on the structure. The chances of survival increase with distance. Chances depend on the yield and altitude of the detonation and other details such as whether the location is shielded by hills, etc."

Shelter in Place
Just how far you need to be from ground zero to survive a nuclear blast depends on many variables, such as the power generated by the blast, weather conditions and geological features, among other things. Yet, one thing is for certain: Buildings can, and do, shield people from radiation. "Beyond the immediate destruction and fire zone, sheltering in place is recommended both for fallout protection and to keep roads clear for responders," May says. "It's going to be very hard for parents, but if your kids are in school beyond the destruction and fire zone, don't go pick them up right away!"

"Any structure can help reduce your exposure to fallout radiation," adds Livermore's Buddemeier. "Though, if you have a few minutes to get into a more robust structure, that would provide more protection and further reduce your exposure."

Buddemeier also says that while a bit of ionizing radiation can penetrate buildings, the walls of most common urban buildings can reduce exposures by a factor of 10 or more. He says an adequate shelter could be a basement, particularly against a wall; multistory brick or concrete structures; office buildings (central core or underground sections); multistory shopping malls (away from the roof or periphery); and tunnels, subways and other underground areas.

This graphic explains how different types of shelters can provide different levels of safety in the event of a nuclear attack.
This graphic explains how different types of shelters can provide different levels of safety in the event of a nuclear attack.
LAWRENCE LIVERMORE NATIONAL LABORATORY
FEMA Guidelines
The U.S. Federal Emergency Management Agency recommends, if possible, finding an underground shelter "such as a home or office building basement." In short, the more concrete, bricks, books and earth that you can put between yourself and radioactive fallout, the better your survivability rate. In addition, FEMA says if a nuke detonates:

Don't look at the flash of light. You'll go blind.
"Duck and cover" behind anything that can protect you.
Find the nearest building, preferably made of brick or concrete, as fast as you can.
Get as far underground as possible, or at the very least, in the center of a building.
Keep as much of your skin covered as possible. Radioactive particles are tiny. The less that gets on your skin the better.
If your clothes become contaminated, remove them and take a shower with soap and water as soon as possible. Showers will wash the radioactive particles away. Do not use hair conditioner, because radioactive particles bind to it.
Stay hunkered down in a shelter for a minimum of 48 to 72 hours.
Hawaii's Emergency Management Agency issued a bone-chilling set of guidelines in the event North Korea targets the state. Among other things, the agency called on residents to heed warning sirens. "If you're indoors stay indoors well away from the windows," the guidelines read. "If you are outdoors, seek immediate shelter in a building, preferably a concrete structure ... DO NOT look at the flash of light."

Still, despite the horrific nature of a nuclear detonation, Hawaii's Emergency Management Agency assumes that tens of thousands, based on the size of a North Korean nuclear weapon, will survive. "Survival is very likely," the agency's Toby Clairmont said in an email interview. "We estimate that over 90 percent of the people on Oahu would survive a 15-kiloton weapon detonated in the urban Honolulu area. Those who survive will need to shelter for up to 14 days to avoid exposure to radioactive fallout."

Or, if you're like Dan Judson, create your own prepper's cave. "Most people have nowhere to run, so sheltering in place is the only option," he says. "A house is relatively easy to fortify — plywood is surprisingly strong, and instructions can be found online. A basement, if you have one, is a good Alamo, though I really wouldn't want to live in ours for a long period of time. Also, a basement hideout can quickly become a trap. Remember, everyone at the Alamo died."

NOW THAT'S SAD!
More than 70 years after the United States dropped two atomic bombs on Hiroshima and Nagasaki, the number of dead remains a mystery. Children of the Atomic Bomb, a research project developed by UCLA professor emeritus Dr. James N. Yamazaki and the UCLA Asian American Studies Center, estimates the number of wounded and killed, 150,000 (Hiroshima) and 75,000 (Nagasaki), is conservative. At least 66,000 people in Hiroshima died instantly, and at least 30,000 in Nagasaki. More than 226,000 survived the blasts, although many suffered the ill effects of radiation.
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ivan_077
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