Yahoo News: New studies indicate that huge earthquakes can diminish the height of nearby volcanoes.
The massive earthquakes that struck Japan and Chile in 2011 and 2010, respectively, sank several big volcanoes by up to 6 inches (15 centimeters), two new studies report.
This is the first time scientists have seen a string of volcanoes drop after an earthquake. Even though the mountains are on opposite sides of the Pacific Ocean, their descents look remarkably similar. The two teams have different explanations for why the volcanoes sank, according to the studies, published today (June 30) in the journal Nature Geoscience. However, both groups agree it's likely scientists will discover more examples of drooping volcanoes after big earthquakes, and find a single mechanism that controls the process.