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The Eruptive Activities of Mt. Semeru during 1975
n January gas explosions often occurred, ejecting incandescent lava fragments, while eruption clouds rose 1 kilometer above the summit. From Argosuko Obs. (S) reddish glares on the peak of the lava dome could be often observed, while from Gunung Sawur (ESE) and Tawonso ngo (ENE) Observatories they were seen only a few times.
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