Alarmed by the findings, the government asked Lin and his team to gather more information about the magma chamber so they could understand the signs and risks of eruption, essential for the ground work needed to construct an emergency warning system. The more they understood about the magma chamber, the easier it would be to know when and where an eruption would take place. "The problem was we didn't know how deep or how big the magma chamber was; we didn't know the detailed geometry," says Lin.

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