Abstract
Lava in Halemaumau gradually drained 370 ft in February, disappearing from sight before the end of the month. An earthquake swarm began on the east rift in March; distance of earthquakes from Kilauea summit increased through time and led to a correct forecast that earthquakes would occur in Puna by April. Earthquakes increased in number and intensity during April; ground cracking in Puna began April 23, accompanied by subsidence, as much as 8-12 ft south of a reactivated fault scarp. The crisis was over by April 27. Subsidence of Halemaumau began on April 29, with increase in seismic activity. Explosions began May 13, culminating on May 18; the last rock-throwing explosion was on May 24. The earthquake swarm at Kilauea summit continued at a diminishing rate until about June 24. Glowing intrusive bodies were exposed in the newly-collapsed Halemaumau, now 3,400 ft by 3,000 ft, with a depth of 1,335 ft. The paper contains good photographs of the eruption cloud and boulders thrown out.
Published Version
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