Scientists monitored the El Chichón volcano's movements and recorded some changes in its crater.
Volcanoes don’t always show their activity through huge explosions or lava rivers. In many cases, the changes are quiet and ...
Volcanic lakes / Bruce Christenson, Karoly Németh, Dmitri Rouwet, Franco Tassi, Jean Vandemeulebrouck, and Johan C. Varekamp -- Volcano-hydrologic hazards from volcanic lakes / V. Manville -- ...