Two unrelated events on opposite ends of the globe and you think it's "strange" in some way? How is it strange? Are you seriously implying that there is something all encompassing going on that connects earthquakes and icebergs together?
The Gaia Hypothesis, of course.

^I am in no way supporting the Gaia hypothesis
Climate change happens. The only no-no politics would be debating whether the current changes are anthropogenic. But, hey, icebergs can break off, sure, why not? I bet it happened all the time as the Ice Age was winding down (and the planet was warming up to less bone-freezing temperatures).