USGS Scientists Collecting Gas Samples from the Unsaturated Zone

USGS scientists collecting gas samples from the unsaturated zone. Subsurface gases are drawn through a small glass tube filled w

Detailed Description

USGS scientists collecting gas samples from the unsaturated zone. Subsurface gases are drawn through a small glass tube filled with an adsorbing material, which traps mercury or volatile organic compounds for later analysis.

Details

Image Dimensions: 700 x 557

Date Taken:

Location Taken: US