How Volcanic Activity Can Spawn Tsunamis No earthquakes were recorded before the tsunami struck, the Indonesian authorities said. But there had been an eruption on the volcanic island of Anak Krakatau about half an hour before. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Australia Climate Report Predicts More Hot Days and Harsher Fire SeasonsISIS Kills 23 Civilian Hostages in Western AfghanistanCalais Jungle Clearance Resumes, Tents and Shelters AblazeRodrigo Duterte, in Japan, Calls for U.S. Troops to Exit Philippines in 2 YearsOp-Ed Contributor: Playing With Fear: Russia’s War CardBarcelona Journal: Franco Took Decades to Leave the World Stage. His Statue? Only Days.