Nine Major Earthquakes in the United States of the Ionian Islands, 1815–1864

Nine major earthquakes that affected the islands of Corfu, Paxoi, Lefkada, Kephalonia,
Ithaca, and Zakynthos in the Ionian Sea offshore western Greece at the time of British
Protectorate of the United States of the Ionian Islands (1815–1864) have been
reappraised by means of a systematic investigation of contemporary, locally produced
documents of diverse typologies. With an in-depth study of the earthquakes attested
by multiple observations, this article complements and concludes the research focused
on 50 yr of seismic records that was introduced by my recent companion article on the
solitary records of earthquake effects throughout the Ionian Islands. Although some
earthquakes discussed in this article had already been studied and interpreted in
modern times, the exclusive use of carefully contextualized and independent records
of earthquake effects allowed the author to overcome the imprecisions of preceding
interpretations. Because of the exhaustive documentation, this study proposes a different
vision of the characteristics of these nine major earthquakes from their dates of
occurrence to newly assigned sets of intensity data.