Portable helium gas analyzer
![A computer and gas analyzer sit on a tabletop. The computer is displaying a spreadsheet of data results](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/SSB%2010.29%201.jpg?itok=tuz0FlwR)
Detailed Description
A photo showing the new portable instrument that measures the helium isotope concentrations continuously in soil gas near Horseshoe Lake on the flanks of Mammoth Mountain volcano in eastern California.
Sources/Usage
Public Domain.