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Merapi Monthly Report August - Sept 1983
August and September 1983 rockfalls from the active dome of lava were continued to be observed traveling a maximum distance of 1.4 k from the summit. Seismic activity during August - September 1983 was similar to that of the previous month. Multi-phase events recorded by the seismo graph at the Babadan field observatory were relatively proportional to those rockfalls events mentioned above.
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