Abstract
The Hawaiian station in 1928 recorded 1,034 local disturbances on the seismograph. Possibly this heralded the outbreak of Halemaumau February 20, 1929. On that day lava, gushed up along a rift in the lava‐floor and the base of the talus‐slides. It was a pumiceous basalt spouting up in a jet for 200 feet. Fountains bubbled up along the crack, spread out in a lake, and filled the floor‐cup. They continued in action about 37 hours. About 3,600,000 cubic meters of lava flowed in.
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