The title of the paper I’m critiquing is "A Tunguska sized airburst destroyed Tall el-Hammam a Middle Bronze Age city in the Jordan Valley near the Dead Sea." I’m tagging it #TEHburst to help keep track of these threads. To understand the paper, we need talk about #Tunguska.
At this juncture I would like to invite any of my colleagues who are experts in any of the fields I’m talking about to jump in with comments. If I make more mistakes, get something wrong, or forget a detail that you know, please correct me.
I attended the "100 years of the Tunguska phenomenon: past, present, future” conference in Moscow on June, 2008. I learned a lot of science, but I also learned a lot of backstory about the history of the “Tunguska phenomenon,” which is what the Russians call it.
The event seems to be strongly embedded in Russian culture, as a matter of pride, identity, and fascination. So as the 100th anniversary approached, Russian media ramped up coverage, with TV and newspapers doing stories.
My new Italian friend, Luca Gasperini who was the lead author on a paper claiming that Lake Cheko was actually an impact crater, was interviewed on a TV show that referred to him as “man of the day.”
Our conference was held at the prestigious Russian Academy of Sciences, with bizarre architecture that could have been designed by MC Escher. Very cool, but not very functional. We had a Russian/English interpreter but the audio didn’t always work.
One of the speakers was Georgy Grechko, a Soviet-era cosmonaut and national hero who held records for duration in outer space. Cosmonauts of that time have almost god-like status in Russia, as suggested by the monument to Yuri Gagarin outside the Academy building.
Grechko gave a long & rambling talk in Russian. I had no idea what he was saying because the interpreter’s feed was out. But he showed a lot of slides of cross sections of trees, and held up pieces of them. They were from near the epicenter of Tunguska, and had healed burn scars.
I was having with my Italian friends & Grechko came by. The Italians were star-struck & got autographs. I didn’t really know his significance at the time, but he’d also done research on Tunguska before he went to space, including on Lake Cheko that they'd just published about.
The Italian group’s senior leader was Giuseppe Longo, who I’d met in Bologna at a workshop he’d organized in 1996. As far as I know, he was the first westerner to do extensive field research at the site of the 1908 event (more on this in another thread someday, I hope).
I’ve used Longo’s maps for years to compare to the output of my airburst simulations. Here’s a slide from my presentation that week, based on an earlier version of the same simulation that the #TEHburst group used to argue for a Sodom-smiting airburst at #TallElHammam .
One our way to Tunguska, we laid over in the Siberian city of Krasnoyarsk, which was celebrating the 100th anniversary with events and seminars. We went to the local library, which was hosting speakers and had a live interpreter.
One of the speakers was named Florenskiy, who (if I remember right) was the nephew of a prominent Soviet-era Tunguska researcher whose work is still widely cited. He shared recollections about his (I think) uncle during that time. defendgaia.org/bobk/tungmet.h…
The most fascinating talk was by a Siberian historian, whose name I wish I could remember. He gave a very long talk (by American standards) about the impact of the Tunguska phenomenon on Russian culture, which I learned was very significant and enduring.
I remember him explaining that Russian science doesn't traditionally have the strong separation between science & pseudoscience that western science does. Most of the early Tunguska research was driven by what westerners think of as pseudoscience & these notions persist.
I also earned that Sergei Korolev—the national hero who led the Soviet rocket program during the space race and was Werner von Braun’s counterpart—was an ardent UFO believer. This is still a mainstream notion among many Russians.
He was convinced that the Tunguska phenomenon was a UFO event and sent young cosmonauts (including Georgy Grechko) to train there, just as American astronauts were trained at Meteor Crater and the Ries Crater by Gene Shoemaker.
Maybe Russians call it “Tunguska phenomenon” to avoid taking a position. Due to the language barrier, I was unable to speak to many of the Russians who were at Kulik’s Tunguska camp. Our interactions mostly involved music & vodka. I suspect many were UFO believers.
Next thread: Tunguska fieldwork.

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More from @MarkBoslough

Mar 28, 2022
Today I'm going to talk about Example #8 in Allen West's formal "Explanation of Changes in Corrected Paper" (the controversial Bunch et al Sodom & Gomorrah was a comet airburst paper). The beginning of the discussion is here:
Here's the link to West's "Explanation" which invokes the word "cosmetic" 12 times. Perhaps the Comet Research Group needs to change the name of its blog to "Cosmetic Tusk" since it seems to focus on cosmetic appearances at the expense of science.
"For cosmetic reasons in Fig. 15b, we used a cloning tool to remove the partially visible N arrow and replaced it with a NE arrow."

In the published version the NE arrow pointed to the left of north and that would have been obvious if the N arrow hadn't been photoshopped out.
Read 17 tweets
Mar 28, 2022
I'm starting a new thread to discuss the Comet Research Group's explanation of their corrections to the Bunch et al (2021) Sodom & Gomorrah airburst paper, which used inappropriately modified (photoshopped) field photos. The first thread starts here:
"Example #3. The annotated Figure 44c of the skeleton (left panel below) was provided by official photographers of the Tall el-Hammam Excavation Project (TeHEP). It is listed below as the 'uncropped original,' because an unannotated original is not available."
Why were the authors of Bunch et al (2021) unable to get an original copy of this image, given that one of the coauthors is Director of Scientific Analysis and Field Supervisor at the Tall el-Hammam Excavation Project (TeHEP), when I was able to get a copy?
Read 13 tweets
Mar 27, 2022
The Comet Research Group has just released, through its Cosmic Tusk blog, an extended explanation for the manipulated images in the Bunch et al (2021) Sodom paper. I would like to give all my science friends a chance to analyze & comment on it here. cosmictusk.com/wp-content/upl…
According to the CRG's blogger & spokesman, "In an opaque request, elements of the mob petitioned Science Reports, claiming the photographs in the publication were fraudulent. The impact scientists immediately responded to the nuisance claim carefully and appropriately."
The request wasn't made by a "mob". It was made by 2021 Maddox Prize winning image forensics expert and scientific integrity advocate Elisabeth Bik, @microbiomdigest, in PubPeer. It was a series of requests, starting in September (the week after the paper was published).
Read 13 tweets
Feb 17, 2022
This weekend marks 5 months since publication of a deeply flawed paper claiming that the biblical city of Sodom was destroyed by a Tunguska sized airburst. It's under consideration for retraction due to inappropriate image tampering. Here's a chronology.
nature.com/articles/s4159…
Sept. 20, 2021:
Bunch et al (2021) was published by @SciReports. It was immediately met by harsh criticism from archaeologists, airburst experts, radiocarbon dating experts & other scientists.


Sept. 29, 2021:
Image forensics expert & scientific integrity advocate E. Bik (@microbiomdigest) discovered evidence for photoshopping (cloning) of one of the 18 digital photographs of the excavation. She immediately published her finding in PubPeer.
Read 20 tweets
Oct 30, 2021
Whenever I look at Bunch et al #Sodom #airburst paper I find more problems. I already documented the authors’ profound misunderstanding of airbursts (see link). Now I see that they get much of their information about #Tunguska from creationist literature.
In their subsection entitled “Comparison to Tunguska cosmic airburst” they make several false assertions. In re-reading it today, another claim jumped out at me: “The airburst generated a pressure wave that toppled or snapped >80 million trees, some up to 1-m in diameter..” Image
I wasn’t aware that there were any trees a meter in diameter that had been toppled. I didn’t see any meter-wide trees when I visited explored the Siberian taiga in the blast zone 13 years ago. None of the surviving trees we cored were that big.
Read 13 tweets
Oct 7, 2021
Here's an aerial photograph of the trees there were blown over by the Tunguska blast. It was taken about 30 years after the 1908 event & was used with other data by Giuseppe Longo to create a map of direction of fallen trees. You can see there is some variation in alignment. Image
In a strong blast wave, there is turbulence & chaotic flow. Terrain influences the direction & intensity too. Not everything that blows down is parallel. It looks to my eye as if, even in this small area, the tree alignment varies by up to 10°. Image
Researchers can survey a blast zone like Tunguska to create a map of debris directing to infer wind vectors by statistically averaging local variation. Longo did that for his Tunguska map. But not everything lines up perfectly because the real world is noisy. Image
Read 4 tweets

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