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A close-up of the MultiGAS instrument (located in the tan box), which is placed

Detailed Description

A close-up of the MultiGAS instrument (located in the tan box), which is placed in a larger black box to protect the instrument from the weather. The MultiGAS instrument collects an air sample and measures the concentrations of volcanic gases such as sulfur dioxide and carbon dioxide, as well as collecting data on environmental parameters like temperature and pressure. The instruments are typically placed at locations downwind of vents. The collected data is transmitted by radio to HVO, providing a record of changes in gas concentration that helps in understanding magma depth and the pathways by which gas reaches the surface. Photo by Frank Younger.

Sources/Usage

Public Domain.