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WWII Bombings Affected Ionosphere and Radio Propagation

Discussion in 'Ham Radio Discussions' started by KA0HCP, Sep 26, 2018.

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  1. KA0HCP

    KA0HCP XML Subscriber QRZ Page

  2. W4ZD

    W4ZD Ham Member QRZ Page

    Grief, if this is so (I presume it is), I wonder how nuclear tests messed with the atmosphere. Ivy Mike, yield around 10 megatons...


    Pretty funky looking thing, too...


    NL7W, KA4DPO and WQ4G like this.
  3. WG8Z

    WG8Z Ham Member QRZ Page

    Light fuse Get away Boom
    Last edited: Sep 26, 2018
    KD8DEY, KA4DPO and K9ASE like this.
  4. K4PIH

    K4PIH Ham Member QRZ Page

    Read the article. Like most of these things, it's an extrapolation based on studies that may or may not be related. Using a lightning strike to quantify a WWII bombing strike and it's effect on the atmospheric layers is apples and oranges. Interesting post non the less, makes you wonder how far back we messed up mother ship earth. It's so easy, caveman prolly did it!
  5. K4PIH

    K4PIH Ham Member QRZ Page

    That's the guy sitting the chair testing the matches ;)
    W4ZD likes this.
  6. KA0HCP

    KA0HCP XML Subscriber QRZ Page

    Re-read the summary. Lightning has nothing to do with the conclusions drawn from recorded ionospheric observations. No extrapolations based on unrelated studies. The authors suggest that based on similar energy levels of lightning strike and coincident changes in F layers, that the same or similar effect may be responsible for the observed changes.
  7. N2EY

    N2EY Premium Subscriber QRZ Page

    Of course there were effects, but they were relatively localized, and the ionosphere settled down after enough time passed.

    btw, the Castle Bravo test was supposed to yield 6 megatons but actually yielded 15 megatons.
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  8. W4ZD

    W4ZD Ham Member QRZ Page

    Consider this statistic... "Between 1939 and 1945, Allied planes dropped 3.4 million tons of bombs on Axis powers." I cannot vouch for the accuracy of the statement, but given the technology of the time it seems reasonable. (see, e.g., ) And then in one fell swoop, 3 times that amount in, what, a microsecond?

    Yeah, I know. Major screwup. :)

    Richard Rhodes, an American historian, wrote several book on the subject of the development of nuclear weapons. Good reads.
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  9. N2EY

    N2EY Premium Subscriber QRZ Page

    Yep. And the biggest of them all, the "Tsar Bomba", was 50 megatons - and that wasn't the maximum the design could do; they dialed it back.

    They did not know what they did not know.....

    73 de Jim, N2EY
    N2SR likes this.
  10. KC8VWM

    KC8VWM Ham Member QRZ Page

    Not sure abound the scientific validity of it all, but nevertheless it's some very interesting information.

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