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Did the explosion leave a magnetic signature in the ground at the epicentre?

Asked 26 Oct 2026 by ·Part of What kind of body, if any, caused the Tunguska explosion?·3 answers·0·0 following
Most likely: the anomalies reflect the local geology onlyAhead 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].

Answers 3

Evidence: 1 for
Most likely
None of these.
Not tested enough to call either way
Evidence: none yet
Still possible
Evidence: 1 for
Still possible

History

  1. Takáč et al. puts forward: some magnetic anomalies at the epicentre were produced or altered by the airburst.
  2. Takáč et al. puts forward: the anomalies reflect the local geology only.
  3. Takáč et al.: some anomalies align with the presumed trajectory at about 300°.For: Some magnetic anomalies at the epicentre were produced or altered by the airburst.
  4. Takáč et al.: the anomaly pattern correlates with known geological structures, and the authors cannot attribute any anomaly…For: The anomalies reflect the local geology only.
  5. Asked on this site
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