Sci­en­tists fear Hawaii’s Ki­lauea vol­cano may have vi­o­lent erup­tions un­der the sce­nario below.

The Mercury News Weekend - - FRONT PAGE -

1 A high magma col­umn is so hot that ground­wa­ter is pre­vented from touch­ing the magma.

2 How­ever, if the magma col­umn drops to ground­wa­ter level, it could in­ter­act with the wa­ter caus­ing steam. Fall­ing rocks could block the col­umn.

3 The block­age could cause a buildup in steam­pres­sure, which could cause an ex­plo­sion— shoot­ing rocks up to 12 tons half amile away and fall­ing ash 10 to 29miles away.

Source: Los An­ge­les Times BAYAREA NEWS GROUP

Block­age Ground­wa­ter

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