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    สุมิตตา จามิคุณ 17 May 2022 19:45

    In addition to seismic data, Lin and his team also began listening for phreatic activity, an early warning sign of magmatic activity. Constant heat from the magma chamber causes gases underground to move upwards through conduits in the rock until they break through the surface explosively. In large phreatic eruptions, rocks, volcanic ash and other debris are also ejected.

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