Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

We’re Still Worrying About EMPs
Defense Tech ^ | 2/29/2012 | Defense Tech

Posted on 02/29/2012 7:54:36 PM PST by U-238

EMPs!!! You know, the big electronics-frying pulses that accompany nuclear blasts. We’re back to worrying about them again. In particular how does the military protect its electrical infrastructure from an EMP attack.

“Yeah, we have issues there [with the EMP threat] and we have to look at those and we seriously have to understand that in the Army in particular, because we have an awful lot of bases that we look at,” said Marilyn Freeman assistant secretary of the Army for research and technology during a House Armed Services emerging threats subcomittee hearing today. “I work very closely and the folks in my office and accross the laboratory system of the Army work very close with the installations folks as we assess what our vulnerabilities are to power and energy issues and one of the things we’re trying to do is actually set up the ability for our various bases to be more energy self sufficient, more energy secure and to have the ability, not only to be more efficient and effective, but also to be safe and not vulnerable” to attacks from EMPs that would shut down a bases power systems.

If you think it’s easy to harden a base connected to the civilian power grid from an EMP blast, think again, one of Freeman’s fellow Pentagon science officials said in when a lawmaker asked how soon the nation can protect its bases and power infrastructure from EMP attack.

(Excerpt) Read more at defensetech.org ...


TOPICS: Foreign Affairs; News/Current Events; Technical
KEYWORDS: e4b; emp; infrastructure; nuclear; pentagon; science; usarmy; usmilitary
Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-8081-90 next last
To: U-238

Just put a really big Faraday cage over the US. Problem solved.


21 posted on 02/29/2012 8:39:35 PM PST by Nachoman (I HOPE we CHANGE presidents.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: JRandomFreeper; DBrow
Why do you think the electromagnetic field is weakening?

Because the geeks at NOAA say it's in a decline based on their measurements. NASA is aware of, and adjusts for a particular spot east of South America. It weirds out their satellites, or something.


The decay of the earth's magnetic field has been observed since the field was first able to be measured.
22 posted on 02/29/2012 8:41:29 PM PST by aruanan
[ Post Reply | Private Reply | To 18 | View Replies]

To: Little Pig

Well my FRiend, you need to choose between educating yourself from source documents or listening to idiots like this “contact” of yours who doesn’t know what he’s talking about.

I suggest education, but YMMV.

Some people just like to make snippy comments on the topic of EMP because either they flunked science (or reading) or because they think it’s cute somehow.

If you’d like some facts, here is a report from the British House of Commons that was released just this year:

http://www.publications.parliament.uk/pa/cm201012/cmselect/cmdfence/1552/155202.htm

Like Fox News says, “We report, you decide”. But facts are handy things.


23 posted on 02/29/2012 8:41:35 PM PST by bigbob
[ Post Reply | Private Reply | To 9 | View Replies]

To: Nachoman; All

http://www.globalsecurity.org/wmd/library/report/1988/CM2.htm


24 posted on 02/29/2012 8:46:54 PM PST by U-238
[ Post Reply | Private Reply | To 21 | View Replies]

To: patton
I'm good. Thanks. I did an internship in late 1800s living for a couple of years on a remote mountain. And I've had jigs to wind coils since the early '70s (ham radio, dontchaknow). Caps are easy, if ugly.

I can and have built crystal radios with a chunk of galena, an empty cigarette pack, a sheet of newspaper, a toilet paper roll and a bunch of wire.

It's good for cooks to know the basics of technology, and how to build them from scratch. You just never know what might happen in a commercial kitchen.

/johnny

25 posted on 02/29/2012 8:48:05 PM PST by JRandomFreeper (Gone Galt)
[ Post Reply | Private Reply | To 20 | View Replies]

To: U-238; All

Does anyone know whether or not the aircraft that dropped the A-bombs on Hiroshima and Nagasaki were damaged by EMP?


26 posted on 02/29/2012 8:53:26 PM PST by davisfh
[ Post Reply | Private Reply | To 1 | View Replies]

To: JRandomFreeper

They condenser is the key - most likely to fry, hard to replace.

OBTW, you have listed the makings for the threat ...


27 posted on 02/29/2012 8:54:44 PM PST by patton (bad math joke omitted - this space for rent)
[ Post Reply | Private Reply | To 25 | View Replies]

To: davisfh

The B-29 aircraft that delivered the nuclear weapons at Hiroshima and Nagasaki did not lose power due to damage to their electrical or electronic systems. This is simply because electrons (ejected from the air by gamma rays) are stopped quickly in normal air for bursts below roughly 10 km (about 6 miles), so they do not get a chance to be significantly deflected by the Earth’s magnetic field


28 posted on 02/29/2012 8:56:14 PM PST by U-238
[ Post Reply | Private Reply | To 26 | View Replies]

To: JRandomFreeper

You are older than you look.


29 posted on 02/29/2012 8:57:04 PM PST by ansel12 (Romney is unquestionably the weakest party front-runner in contemporary political history.)
[ Post Reply | Private Reply | To 25 | View Replies]

To: davisfh

If bombs had been within the intense nuclear radiation zone when the bombs exploded over those cities, then they would have suffered effects from the charge separation (radial) EMP


30 posted on 02/29/2012 8:57:22 PM PST by U-238
[ Post Reply | Private Reply | To 26 | View Replies]

To: patton

Unless one is expecting to get a pulse every freakin day or sumfin, replacement capacitors can be home rolled with wax paper and aluminum foil. In a circuit they can be protected with back to back Zener diodes rated higher than operating voltage but lower than maximum withstanding voltage.

Cat whisker on galena can work, but it is a pain. Better to have a stock of diodes kept wrapped in foil or something.


31 posted on 02/29/2012 9:01:38 PM PST by HiTech RedNeck (Sometimes progressives find their scripture in the penumbra of sacred bathroom stall writings (Tzar))
[ Post Reply | Private Reply | To 27 | View Replies]

To: JRandomFreeper

“Because the geeks at NOAA say it’s in a decline based on their measurements. NASA is aware of, and adjusts for a particular spot east of South America.”

Earth’s MAGNETIC field always changes.

And the spot off South America is the SAA, it has to do with trapped solar particles.

Neither have anything to do with EMP caused by a nuke.


32 posted on 02/29/2012 9:01:57 PM PST by DBrow
[ Post Reply | Private Reply | To 18 | View Replies]

To: ansel12
Let me rephrase... In the first part of the 21st century, I did an internship in how to live under 19th century conditions. For 2 years.

Smartass. ;)

/johnny

33 posted on 02/29/2012 9:02:56 PM PST by JRandomFreeper (Gone Galt)
[ Post Reply | Private Reply | To 29 | View Replies]

To: JRandomFreeper

Ya know, the Amish might have an unexpected advantage.


34 posted on 02/29/2012 9:05:18 PM PST by HiTech RedNeck (Sometimes progressives find their scripture in the penumbra of sacred bathroom stall writings (Tzar))
[ Post Reply | Private Reply | To 33 | View Replies]

To: davisfh

They were not. Radios and radars intact. Same is true for the planes that dropped bombs for tests.

But- these were low altitude shots. You get source region EMP (SREMP) but no HEMP, High Altitude Electromagnetic Pulse.


35 posted on 02/29/2012 9:05:26 PM PST by DBrow
[ Post Reply | Private Reply | To 26 | View Replies]

To: HiTech RedNeck

Dude, I am going to need you in my bug-out location...

LOL.


36 posted on 02/29/2012 9:05:45 PM PST by patton (bad math joke omitted - this space for rent)
[ Post Reply | Private Reply | To 31 | View Replies]

To: davisfh

“e aircraft that dropped the A-bombs on Hiroshima and Nagasaki were damaged by EMP?”

I don’t think that these aircraft had any computers on board to worry about.


37 posted on 02/29/2012 9:07:04 PM PST by garjog
[ Post Reply | Private Reply | To 26 | View Replies]

To: JRandomFreeper

LOL, I thought that might be the case.


38 posted on 02/29/2012 9:07:12 PM PST by ansel12 (Romney is unquestionably the weakest party front-runner in contemporary political history.)
[ Post Reply | Private Reply | To 33 | View Replies]

To: DBrow
But they are ElectroMagnetic effects of unusual events. As is EMPulses.

I'm not particularly worried about EMP from nukes. But our feral gooberment takes it seriously enough to spend billions of our tax dollars preparing for it.

/johnny

39 posted on 02/29/2012 9:08:16 PM PST by JRandomFreeper (Gone Galt)
[ Post Reply | Private Reply | To 32 | View Replies]

To: U-238

It’s been how long since an above surface nuclear bomb was tested? Those sites would be ideal places to research the effects of associated EMP. But the environmentalists would be way too agog now.


40 posted on 02/29/2012 9:08:22 PM PST by HiTech RedNeck (Sometimes progressives find their scripture in the penumbra of sacred bathroom stall writings (Tzar))
[ Post Reply | Private Reply | To 30 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-8081-90 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
News/Activism
Topics · Post Article

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