Active-Source Seismic Experiment Confirms the Magma Pathway of Mount Asama, Japan



Large volcanic eruptions result from the ejection of magma transported from depth. How the magma is transported to the surface is one of the fundamental questions in understanding how a volcano works. A way to address this question is to explore the seismic structures of volcanoes.

One volcano that is well surveyed and instrumented through a variety of global positioning system and seismic networks is Japan's Mount Asama. Because of this, scientists were able to conduct an active-source seismic experiment on this volcano with the goal of mapping volcanic conduits (see Figure 1).