The hypothesis that widespread tephra from the Huaynaputina eruption was only deposited on the ice after being remobilised by an earthquake is scarcely credible without supporting information.    From Wordnik.com.  [Juckes, Yang, Thompson and PNAS: Guliya « Climate Audit] Reference

The 1601 Huaynaputina, sulphur dioxide rich, eruption is the coldest year, but only for one year.    From Wordnik.com.  [Watts Up With That?] Reference