The attached text may not be reproduced or transmitted without prior permission of the copyright holder. If earthquakes are a major vector of Bronze Age collapse to the exclusion of a cosmic, or Taurid complex, vector, then this will have to be decided on an assessment of ALL the relevant evidence. What has impressed me as a well-read layman, is how discoveries tend to be explained on the basis of the expectations of the investigators. They reported that two of these signals were nitric acid, not sulfuric, and therefore not of volcanic origin. So, only the 1645 date remained for Thera.
Fireball chains are rare events.
Recall the archaeologists only found tephra on Crete from Thera after a laborious search in which a few grains were found tucked away here and there. Mandelkehr has not been able to find a publisher for his manuscript book on this event. We welcome unsolicited material for publication which can be sent to the Editor via e-mail.