Rumblings from volcanoes on northern Mariana Islands

http://www.wired.com/wiredscience/2012/02/continued-volcanic-rumblings-from-pagan-in-the-mariana-islands/

http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc0007v38.php#details

http://www.vulkaner.no/v/volcan/pacific/pagan.html

Phivolcs records an astounding 900 aftershocks in first 24 hours after 6.9 magnitude earthquake

http://www.pia.gov.ph/news/index.php?article=1101328580669