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wellerstein's profile
Alex Wellerstein
Alex Wellerstein
Alex Wellerstein
Verified account
@wellerstein

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Alex WellersteinVerified account

@wellerstein

Historian of science, secrecy, and nuclear weapons. Professor of STS at @FollowStevens. UC Berkeley alum with a Harvard PhD. NUKEMAP creator. Coder and web dev.

Hoboken, NJ / NYC
blog.nuclearsecrecy.com
Joined September 2011

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    1. Lassina Zerbo‏Verified account @SinaZerbo 28 Sep 2017
      • Report Tweet

      In response to inquiries: Rough simulation (Sept15-29) of #radio-isotope cloud from hypothetical atmospheric burst over Pacific: #CTBT #IMSpic.twitter.com/361ZBkoUy7

      87 replies 572 retweets 401 likes
    2. Alex Wellerstein‏Verified account @wellerstein 28 Sep 2017
      • Report Tweet
      Replying to @SinaZerbo

      Without information about what the scale means (much less assumptions), this is not just useless, it is dangerous.

      4 replies 5 retweets 45 likes
    3. Alex Wellerstein‏Verified account @wellerstein 28 Sep 2017
      • Report Tweet
      Replying to @wellerstein @SinaZerbo

      People are going to confuse what look like very low rad levels characteristic of "global fallout" with "local fallout" intensities.

      1 reply 0 retweets 2 likes
    4. Alex Wellerstein‏Verified account @wellerstein 28 Sep 2017
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      Replying to @wellerstein @SinaZerbo

      To contrast the difference: on the left is the local fallout estimates of one shot (Bravo, 15Mt, surface/atoll), on the right, the global.pic.twitter.com/1u9tln8bXD

      2 replies 1 retweet 5 likes
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    6. Alex Wellerstein‏Verified account @wellerstein 28 Sep 2017
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      Replying to @dmatthewstewart @SinaZerbo

      15 Mt was the yield of the specific shot I was using as an example (Castle Bravo) — that is a BIG bomb (biggest the US ever set off).

      1 reply 0 retweets 1 like
      Alex Wellerstein‏Verified account @wellerstein 28 Sep 2017
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      Replying to @wellerstein @dmatthewstewart @SinaZerbo

      It just happens to be a shot for which we have a lot of ready-made fallout data (local & global), which is why I used it for illustration.

      2:34 PM - 28 Sep 2017
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      2 replies 0 retweets 1 like
        1. Alex Wellerstein‏Verified account @wellerstein 28 Sep 2017
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          Replying to @wellerstein @dmatthewstewart @SinaZerbo

          By contrast, that is about 100 times more powerful (and more radioactive) than whatever bomb the DPRK set off (15,000 kt vs. 150 kt).

          0 replies 0 retweets 1 like
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