# Did the explosion leave a magnetic signature in the ground at the epicentre? · 1908 Tunguska event > Three answers have been proposed. The anomalies reflect the local geology only. leads, with evidence 1 for: partly supported by its tests. Two are still… Source: https://mysteriesdept.com/mysteries/tunguska-event/questions/QST0D4ECBQY6AFV/did-the-explosion-leave-a-magnetic-signature-in-the-ground Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) Updated: 2026-10-26T11:58:57+00:00 --- **0** # Did the explosion leave a magnetic signature in the ground at the epicentre? Asked 26 Oct 2026 by [**apollo** ](https://mysteriesdept.com/u/apollo)·Part of [What kind of body, if any, caused the Tunguska explosion?](https://mysteriesdept.com/mysteries/tunguska-event/questions/QST0D4ECARP6DFM/what-kind-of-body-if-any-caused-the-tunguska-explosion)·3 answers·0·0 following **Most likely: the anomalies reflect the local geology only** Ahead on the evidence, not yet confirmed. It needs two reviews to be accepted. ## Where it stands Three answers have been proposed. The anomalies reflect the local geology only. leads, with evidence 1 for: partly supported by its tests. Two are still possible. ## Why it matters Airbursts may remagnetise surface rocks through ionisation or shock; a signature would be independent physical evidence of the event's nature. The first detailed survey was published in 2025⁠[[1]](https://mysteriesdept.com/sources/SRC0D4EC3EA5Y4M/exploring-potential-impact-induced-magnetic-signatures-at). ## Answers 3 [**The anomalies reflect the local geology only.** ](https://mysteriesdept.com/mysteries/tunguska-event/answers/ANS0D4ECPQG76ZH/the-anomalies-reflect-the-local-geology-only) Partly supported by its tests Evidence: 1 for Most likely [**None of these.** ](https://mysteriesdept.com/mysteries/tunguska-event/answers/ANS0D4ECQ74737Y/none-of-these) Not tested enough to call either way Evidence: none yet Still possible [**Some magnetic anomalies at the epicentre were produced or altered by the airburst.** ](https://mysteriesdept.com/mysteries/tunguska-event/answers/ANS0D4ECP7W5ZJS/some-magnetic-anomalies-at-the-epicentre-were-produced-or) Not tested enough to call either way Evidence: 1 for Still possible ## History 1. 2025[Takáč et al. puts forward: some magnetic anomalies at the epicentre were produced or altered by the airburst.](https://mysteriesdept.com/sources/SRC0D4EC3EA5Y4M/exploring-potential-impact-induced-magnetic-signatures-at) 1. 2025[Takáč et al. puts forward: the anomalies reflect the local geology only.](https://mysteriesdept.com/sources/SRC0D4EC3EA5Y4M/exploring-potential-impact-induced-magnetic-signatures-at) 1. 2025[Takáč et al.: some anomalies align with the presumed trajectory at about 300°.](https://mysteriesdept.com/sources/SRC0D4EC3EA5Y4M/exploring-potential-impact-induced-magnetic-signatures-at)For: Some magnetic anomalies at the epicentre were produced or altered by the airburst. 1. 2025[Takáč et al.: the anomaly pattern correlates with known geological structures, and the authors cannot attribute any anomaly…](https://mysteriesdept.com/sources/SRC0D4EC3EA5Y4M/exploring-potential-impact-induced-magnetic-signatures-at)For: The anomalies reflect the local geology only. 1. 26 Oct 2026Asked on this site ## Discussion 0 [Add to the discussion](https://mysteriesdept.com/signin?next=/mysteries/tunguska-event/questions/QST0D4ECBQY6AFV/did-the-explosion-leave-a-magnetic-signature-in-the-ground%23discussion) Help with this question [ **Propose an answer** Something the evidence could support or rule out ] [ **Propose an answer** Something the evidence could support or rule out ](https://mysteriesdept.com/signin?next=/mysteries/tunguska-event/questions/QST0D4ECBQY6AFV/did-the-explosion-leave-a-magnetic-signature-in-the-ground%23add-answer) [ **Add evidence** A result for or against an answer ] [ **Add evidence** A result for or against an answer ](https://mysteriesdept.com/signin?next=/mysteries/tunguska-event/questions/QST0D4ECBQY6AFV/did-the-explosion-leave-a-magnetic-signature-in-the-ground%23add-evidence) [ **Ask a sub-question** A smaller question that would help settle this one ] [ **Ask a sub-question** A smaller question that would help settle this one ](https://mysteriesdept.com/signin?next=/mysteries/tunguska-event/questions/QST0D4ECBQY6AFV/did-the-explosion-leave-a-magnetic-signature-in-the-ground%23add-question) [ **Add a source** A paper, archive record or image ] [ **Add a source** A paper, archive record or image ](https://mysteriesdept.com/signin?next=/mysteries/tunguska-event/questions/QST0D4ECBQY6AFV/did-the-explosion-leave-a-magnetic-signature-in-the-ground%23add-source) Where it fits 1908 Tunguska event [**What kind of body, if any, caused the Tunguska explosion?** ](https://mysteriesdept.com/mysteries/tunguska-event/questions/QST0D4ECARP6DFM/what-kind-of-body-if-any-caused-the-tunguska-explosion)Key question · most likely a stony asteroid some 50–80 m across that broke up and exploded about 8.5 km up **Did the explosion leave a magnetic signature in the ground at the epicentre?** You're here · the anomalies reflect the local geology only [How much energy did the explosion release?](https://mysteriesdept.com/mysteries/tunguska-event/questions/QST0D4ECB0G12FX/how-much-energy-did-the-explosion-release)Most likely · about 10–15 Mt (range 10–40 Mt), from barograms, seismograms and forest damage scaled to nuclear tests [ Ask a question under this one ]