The increased tectonic activity around the Pacific Plate over the last 50 years has exposed untold square miles of molten rock surface area to seawater which, in turn, warms the ocean by orders of magnitude more than an increase of atmospheric CO2 from 0.03% to 0.04%.

"According to long-term records (since about 1900), we expect about 16 major earthquakes in any given year. That includes 15 earthquakes in the magnitude 7 range and one earthquake magnitude 8.0 or greater. In the past 40-50 years, our records show that we have exceeded the long-term average number of major earthquakes about a dozen times".

http://www.usgs.gov/faqs/why-are-we-having-so-many-earthquakes-has-naturally-occurring-earthquake-activity-been