USGS scientists collect a sample of gas from a fumarole on Crater R...
Detailed Description
USGS scientists collect a sample of gas from a fumarole on Crater Rock, near the summit of Mount Hood, Oregon.
Related Content
Volcanic Gas Monitoring at Mount Hood, Oregon
Emission rates of several volcanic gases are also measured annually, either during on-site visits or with airborne monitoring systems.
Related Content
Volcanic Gas Monitoring at Mount Hood, Oregon
Emission rates of several volcanic gases are also measured annually, either during on-site visits or with airborne monitoring systems.