Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

EMP Attack Could Wipe Out U.S.
NewsMax ^ | September 9, 2009 | By Ronald Kessler

Posted on 09/09/2009 8:34:08 AM PDT by Fennie

click here to read article


Navigation: use the links below to view more comments.
first previous 1-20 ... 101-120121-140141-160 ... 221-230 next last
To: Nathan Zachary

http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=6907033

Starfish was not very big, but it zapped power circuits in Hawai’i.

http://glasstone.blogspot.com/2006/03/emp-radiation-from-nuclear-space.html

The Soviets set up a test with a long telephone line, shielded underground power line, and high yield space shot. The story starts a little ways down from the top. They measured large currents, about 3000 Amps 30 microseconds post burst. This was much worse than the currents from Starfish. The amplifiers all along the line failed, and peak voltage was estimated at 300 KV or more based on arc tube discharges.

The underground power line also picked up significant current, and most equipment connected to it was damaged.

Russia popped two 300 KT devices at lower-than-optimum altitudes and caused military generators and mil power systems to fail due to EMP. There is not a lot of infrastructure in Khazakstan to notice much. “Ho! Yak-butter lamp went out!”

We have indeed seen significant EMP damage as verified by test. We have rarely detonated significant yield devices at the correct altitude, though. A ground-pounder produces source-region EMP but not the same type as High Altitude Electromagnetic Pulse (HEMP). So MIKE, IVY, and so forth did not produce HEMP. There were atmospheric tests in Nevada though that had radially-placed instrument cables melt from SREMP, a fairly local effect.


121 posted on 09/09/2009 10:50:10 AM PDT by DBrow
[ Post Reply | Private Reply | To 107 | View Replies]

To: Nathan Zachary

.......There isn’t enough gold in the world for every nation to return to the “gold standard”........

You are correct at the present value of things. But you are wrong if currencies are devalued lower than 0. There is of course plenty of gold to go round if the price rises by say a hundred fold. You must remember there is no basis now for the world economy except faith. Money as we know it is merely electronic blips on an electronic ledger.


122 posted on 09/09/2009 10:50:14 AM PDT by bert (K.E. N.P. +12 . fasl el-khital)
[ Post Reply | Private Reply | To 117 | View Replies]

To: Nathan Zachary
Actually it had more to do with the establishment of the federal reserve in 1917.
123 posted on 09/09/2009 10:50:51 AM PDT by TalonDJ
[ Post Reply | Private Reply | To 106 | View Replies]

To: MikeWUSAF

BTW, as a psychologist . . . with way above average curiosity . . . and not as an affront . . . you may answer by FREEPMAIL if you wish . . .

I’m guessing you might have some of the following labels though I don’t have much to go on in that guess so I’m wondering how accurate or inaccurate my guess is.

How many of your closer relatives have ever accused you of being above average . . .

1. —stodgey
2. —rigid
3. —set in your ways
4. —strict
5. —cut and dried
6. —extremely orderly
7. —predictable
8. —regimented
9. —a by the book man
10. —obsessive compulsive


124 posted on 09/09/2009 10:51:22 AM PDT by Quix (POL Ldrs quotes fm1900 2 presnt: http://www.freerepublic.com/focus/religion/2130557/posts?page=81#81)
[ Post Reply | Private Reply | To 115 | View Replies]

To: Quix
And, in a text based forum . . . there are limited options for emphases.

Bullcrap. Thousands years of literature have had not trouble adding emphasis. And they don't do it by skipping a line after every line. paragraphs were invented for a reason.
125 posted on 09/09/2009 10:53:17 AM PDT by TalonDJ
[ Post Reply | Private Reply | To 120 | View Replies]

To: 6ppc
Everyone should read One Second After by William R. Forstchen.

If it was in a book, it must be true.

126 posted on 09/09/2009 10:54:40 AM PDT by E. Pluribus Unum (Islam is a religion of peace, and Muslims reserve the right to kill anyone who says otherwise.)
[ Post Reply | Private Reply | To 116 | View Replies]

To: Nathan Zachary
Here is some more information...from people who really don't know anything either.

http://www.fas.org/sgp/crs/natsec/RL32544.pdf

From the report:

"High-Altitude Electromagnetic Pulse (HEMP) is a near-instantaneous electromagnetic energy field that is produced in the atmosphere by the power and radiation of a nuclear explosion, and that is damaging to electronic equipment over a very wide area, depending on power of the nuclear device and altitude of the burst."

"HEMP is produced when a nuclear weapon is detonated high above the Earth’s surface, creating gamma-radiation that interacts with the atmosphere to create an instantaneous intense electromagnetic energy field that is harmless to people as it radiates outward, but which can overload computer circuitry with effects similar to, but causing damage much more swiftly than, a lightning strike.16 The effects of HEMP became fully known to the United States in 1962 during a high-altitude nuclear test (code named “Starfish Prime”) over the Pacific Ocean, when radio stations and electronic equipment were disrupted 800 miles away throughout parts of Hawaii. The HEMP effect can span thousands of miles, depending on the altitude and the design and power of the nuclear burst (a single device detonated at an appropriate altitude over Kansas reportedly could affect all of the continental United CRS-7 17 The Federation of American Scientists, “Nuclear Weapons EMP Effects,” [http://www.fas.org/nuke/intro/nuke/emp.htm]. States)17, and can be picked up by metallic conductors such as wires, or overhead power lines, acting as antennas that conduct the energy shockwave into the electronic systems of cars, airplanes, or communications equipment."

"To produce maximum coverage for the HEMP effect, a nuclear device must explode very high in the atmosphere, too far away from the earth’s surface to cause injury or damage directly from heat or blast. Also, HEMP produced by the nuclear explosion is instantaneous — too brief to start current flowing within a human body — so there is no effect on people."

127 posted on 09/09/2009 10:55:12 AM PDT by NELSON111
[ Post Reply | Private Reply | To 113 | View Replies]

To: isom35

I thought he was dead.


128 posted on 09/09/2009 10:56:56 AM PDT by BenLurkin
[ Post Reply | Private Reply | To 37 | View Replies]

To: TalonDJ

I don’t recall

asking, much less begging

you or anyone to like my style.

My style is what it is.

You are most welcome to ignore it. I seems to have it’s own filtering mechanism built-in.

Mostly, I enjoy it as it is and it commnicates as I want it to,

to quite a number of folks.

You are quite welcome to opt-out.


129 posted on 09/09/2009 10:56:57 AM PDT by Quix (POL Ldrs quotes fm1900 2 presnt: http://www.freerepublic.com/focus/religion/2130557/posts?page=81#81)
[ Post Reply | Private Reply | To 125 | View Replies]

To: MikeWUSAF

Line of sight, and effective range are not the same thing.


130 posted on 09/09/2009 10:57:29 AM PDT by TalonDJ
[ Post Reply | Private Reply | To 104 | View Replies]

To: TalonDJ

Personally,

i find prissy-ness about my style a LOT less attractive than my style. LOL.


131 posted on 09/09/2009 10:59:16 AM PDT by Quix (POL Ldrs quotes fm1900 2 presnt: http://www.freerepublic.com/focus/religion/2130557/posts?page=81#81)
[ Post Reply | Private Reply | To 125 | View Replies]

To: TalonDJ

Personally,

i find prissy-ness about my style a LOT less attractive than my style. LOL.


132 posted on 09/09/2009 10:59:19 AM PDT by Quix (POL Ldrs quotes fm1900 2 presnt: http://www.freerepublic.com/focus/religion/2130557/posts?page=81#81)
[ Post Reply | Private Reply | To 125 | View Replies]

To: E. Pluribus Unum
If it was in a book, it must be true.

Foreward by Newt Gingrich attesting to the potential truth in the book (if it were to happen). The afterward of the book is by Captain Willaim Sanders, USN, who is an expert in the field.

133 posted on 09/09/2009 11:00:16 AM PDT by NELSON111
[ Post Reply | Private Reply | To 126 | View Replies]

To: NELSON111
"The blasts in the 50's and 60's that you are talking about were sfc detonations. WITHIN the atmosphere."

One of the highest was at an altitude of 540 km (335.5 mi) and used to determine the effects of the blast and radiation in the exoatmospheric environment.

The U.S. program began in 1958, with the Teak and Orange shots, both 3.8 megatons. These warheads were initially carried on Redstone rockets. Later tests were delivered by Thor missiles for Operation Dominic I tests, and modified Lockheed X-17 missiles for the Argus tests.

The USSR also did lots of these kind of tests.

EMP devastation produced:

The strong electromagnetic pulse (EMP) that results has several components. In the first few tens of nanoseconds, about a tenth of a percent of the weapon yield appears as powerful gamma rays with energies of one to three mega-electron volts (MeV, a unit of energy). The gamma rays rain down into the atmosphere and collide with air molecules, depositing their energy to produce huge quantities of positive ions and recoil electrons (also known as Compton electrons). The impacts create MeV-energy Compton electrons that then accelerate and spiral along the earth's magnetic field lines. The resulting transient electric fields and currents that arise generate electromagnetic emissions in the radio frequency range of 15 to 250 megahertz (MHz, or one million cycles per second). This high-altitude EMP occurs between 30 and 50 kilometers above the earth's surface. The potential as an anti-satellite weapon became apparent in August 1958 during Hardtack Teak. The EMP observed at the Apia Observatory at Samoa was four times more powerful than any created by solar storms, while in July 1962 the Starfish Prime test damaged electronics in Honolulu and New Zealand (approximately 1,300 kilometers away), fused 300 street lights on Oahu (Hawaii), set off about 100 burglar alarms, and caused the failure of a microwave repeating station on Kauai, which cut off the sturdy telephone system from the other Hawaiian islands [1]. The radius for an effective satellite kill for the various prompt radiations produced by such a nuclear weapon in space was determined to be roughly 80 km. Further testing to this end was carried out, and embodied in a Department of Defense program, Program 437.

There are problems with nuclear weapons carried over to testing and deployment scenarios, however. Because of the very large radius associated with nuclear events, it was nearly impossible to prevent indiscriminate damage to other satellites, including one's own satellites. Starfish Prime produced an artificial radiation belt in space which soon destroyed three satellites (Ariel, TRAAC, and Transit 4B all failed after traversing the radiation belt, while Cosmos V, Injun I and Telstar suffered minor degradation, due to some radiation damage to solar cells, etc. [2]). The radiation dose rate was at least 60 rads/day at four months after Starfish for a well-shielded satellite or manned capsule in a polar circular earth orbit [3], which caused NASA concern with regard to its manned space exploration programs.

So, to cause the kind of emp that would be needed to destroy all electronics, over a specific area would have to be low enough that it would also kill everyone.

Higher detonations would knock out satellites, including their own.

134 posted on 09/09/2009 11:03:24 AM PDT by Nathan Zachary
[ Post Reply | Private Reply | To 105 | View Replies]

To: MikeWUSAF; NELSON111
Seems it would be easier to do two - one over Ohio. and one over Denver. Both in the 100 range... That would pretty much wipe out the country...

Back in the 60's when we had the first big blackout in New York they had a difficult time getting the generators going because the motors were started with electricity. Apparently a coal power plant was found in up state New York that was able to provide the "match" to get the system running. I wonder if that's been taken into account?

135 posted on 09/09/2009 11:04:01 AM PDT by GOPJ (Who received the Van Jones FBI reports and who over-ruled the findings? fr:thouworm)
[ Post Reply | Private Reply | To 104 | View Replies]

To: Quix
Mostly, I enjoy it as it is and it commnicates as I want it to,

no, it doesn't. You think it does because you read it with the intent you meant for it to have in your mind. So you mentally read it as if the breaks were dramatic pauses or whatever you seem to think they are. They aren't. To everyone else they are randomly interspersed line breaks. If they do read it as if someone was pausing a lot then it sounds like someone with out of breath trying to give a speech.

Butchering standard writing convention is not 'style'. It is just annoying to try to read. Plus it makes you come across as a nut. And trust me you don't need anything more that does that.

If your goal is to have fewer people take you seriously then you are succeeding just fine.
136 posted on 09/09/2009 11:09:19 AM PDT by TalonDJ
[ Post Reply | Private Reply | To 129 | View Replies]

To: Nathan Zachary

There you go debunking things with facts. Way to take the fun out or a good panic.

Then again... I guess we still have to worry about several dozen 2 megaton warheads exploded 80 km up. Seems likely some random terrorist might be able to pull that off...


137 posted on 09/09/2009 11:13:41 AM PDT by TalonDJ
[ Post Reply | Private Reply | To 134 | View Replies]

To: Nathan Zachary

“Higher detonations would knock out satellites, including their own. “

Yup, so North Korea, Iraq, Iran, Yemen, would lose all their sats!

Wait...


138 posted on 09/09/2009 11:13:42 AM PDT by DBrow
[ Post Reply | Private Reply | To 134 | View Replies]

To: NELSON111
HEMP is produced.....

........in CANADA, dude.... they LEGALIZED it.... wowwwww.... do you know the things you can MAKE out of hemp?????

139 posted on 09/09/2009 11:14:42 AM PDT by Lazamataz (Tagline pawned: Ticket Number 1032983. Redeem by Oct 4, 2009.)
[ Post Reply | Private Reply | To 127 | View Replies]

To: Nathan Zachary
Too many take the EMP threat way too seriously.

When looking at the initial energy necessary for the pulse to be large enough to destroy a large portion of the grid, it is necessary to have a large detonation outside the atmosphere so it converts entirely into energy.

The other fallacy some fall into is that it can be 'controlled'. A correctly built and functioning nuke will detonate as a bubble. The physics of compressibility require it. A partial detonation will not yield enough energy to perform the task, and a large, 30-40MT device will be too heavy to lift except by some of the larger rocketry.

Using multiple warheads of smaller size doesn't work either as absorption of the Gamma radiation necessary for the nuclear explosion to convert to energy gets absorbed by the other detonations, and is not 'accumulative'.

140 posted on 09/09/2009 11:15:39 AM PDT by Pistolshot (Brevity: Saying a lot, while saying very little.)
[ Post Reply | Private Reply | To 134 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-20 ... 101-120121-140141-160 ... 221-230 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson