Skip to main content
U.S. flag

An official website of the United States government

Rime ice coats telemetry system at Mount St. Helens.

Detailed Description

To monitor volcanoes, scientists rely on remote monitoring equipment that can operate 24-hours a day and 365-days a year to deliver real-time data. When scientists design and install monitoring stations, they must consider the remoteness of sites, terrain, and winter conditions. Here, rime ice coats a telemetry system that transmits data near Mount St. Helens, Washington. Rime ice can damage structures by its weight and interfere with signal transmission, at times challenging monitoring efforts.


Public Domain.