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September 8, 2022 — Mauna Loa Sulphur Cone MultiGas Station Maintenance

Detailed Description

At the Sulphur Cone MultiGas station on the Southwest Rift Zone of Mauna Loa, a thermocouple is housed within plastic tubing to protect it from the harsh environment. The thermocouple, which measures temperature, is inserted into a nearby fumarole (an area emitting volcanic gases) to detect subsurface changes in temperature. USGS image by T. Elias.


Public Domain.