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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. Jeffrey Lewis‏Verified account @ArmsControlWonk 2 Sep 2017
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      If the magnitude stays at 5.2, this would be the same size as the Kim-5 in September 2016, which was a few tens of kilotons. 1/

      12 replies 226 retweets 233 likes
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    2. Jeffrey Lewis‏Verified account @ArmsControlWonk 2 Sep 2017
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      But we're seeing larger estimates up to 6.1. That would be MUCH larger explosion. So let's wait. 2/ http://www.seisme.nc/index.php?option=com_alertes&view=alertes&Itemid=184&ids=ird2017rfxe&lang=fr …

      8 replies 123 retweets 167 likes
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    3. Jeffrey Lewis‏Verified account @ArmsControlWonk 2 Sep 2017
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      Just for reference: 5.6 is ~100 kilotons. 6.3 is a megaton. Just using Mb=4.05+.75Log(W). YMMV 3/

      16 replies 293 retweets 278 likes
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    4. Jeffrey Lewis‏Verified account @ArmsControlWonk 2 Sep 2017
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      6.3 puts us up around a megaton. That would be a staged thermonuclear weapon folks. 4/pic.twitter.com/E5e4mqhQmg

      34 replies 1,050 retweets 656 likes
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    5. D. Brett Richardson Ⓥ‏ @BerkeleyBrett 3 Sep 2017
      • Report Tweet
      Replying to @ArmsControlWonk @wellerstein

      .@NTI_WMD @BulletinAtomic @tribelaw North Korean test: possibly multiple simultaneously-detonated fission bombs emulating a hydrogen bomb?

      1 reply 1 retweet 2 likes
      Alex Wellerstein‏Verified account @wellerstein 3 Sep 2017
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      Replying to @BerkeleyBrett @ArmsControlWonk and

      Simultaneity issues in testing multiple fission bombs undetectably probably harder than actual TN weapon at this point.

      8:11 AM - 3 Sep 2017
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      • Jasmin CHill Jeffrey Lewis D. Brett Richardson Ⓥ
      1 reply 1 retweet 3 likes
        1. New conversation
        2. D. Brett Richardson Ⓥ‏ @BerkeleyBrett 3 Sep 2017
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          Replying to @wellerstein @ArmsControlWonk and

          Perhaps. Six fission bombs spaced half a mile apart, all that hard? Might explain tunnel collapse. Thanks for feedback....

          3 replies 1 retweet 1 like
        3. Alex Wellerstein‏Verified account @wellerstein 3 Sep 2017
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          Replying to @BerkeleyBrett @ArmsControlWonk and

          Anyway it seems like kind of a stretch to avoid admitting that DPRK probably has managed what many other nations managed decades ago.

          0 replies 1 retweet 1 like
        4. End of conversation

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