“Due to the fact that volcanic ejecta deposited in the sea preserve well, they record a lot of information at the time of eruption,” said Shimizu in the statement. By using seismic reflection ...

VEI 3 volcanoes have as much as 100 million cubic meters of ejecta. A VEI 8 volcano must spew out a minimum of one trillion cubic meters of ejecta. Many kinds of volcanic activity can endanger the ...