Dr. Jim Kauahikaua in the field
![Color photograph of scientist in the field](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/p2175.jpg?itok=rvJfUMxs)
Detailed Description
Dr. Jim Kauahikaua using an instrument that detects very low frequencies on Pu‘u‘ō‘ō lava flows. The instrument allows for the continuous monitoring of the cross-sectional area of molten lava in the lava tube. USGS photo.
Sources/Usage
Public Domain.