| After that, the volcano continued to have very strong fumarolic activity and small to moderate size vapor eruptions. |
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| A thermal plume in the northwest part of the lake indicates underlying subaerial fumarolic or hydrothermal activity. |
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| The dome was completely free of cloud, and there was very little steaming from any of the fumarolic areas. |
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| From the rim we were able to access the rim of the fumarolic crater and get down to the floor. |
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| It has not erupted in historic times, though it exhibits continuing fumarolic activity. |
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| It occurs in orange-red fumarolic crusts consisting of aggregates of small, quite elongated tabular crystals. |
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| They visit the area one or two times per month, to the dome, to collect fumarolic fluids and measure temperature. |
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| By the late 1980s most fumarolic activity had ceased, but the discovery of thermal springs in mid-valley in 1987 suggested continued cooling of the ash-flow sheet. |
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| The chemistry of fumarolic vapor and thermal spring discharges from the Nevado del Ruiz volcanic magmatic hydrothermal system, Colombia. |
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