Monitoring Hawaiian volcanoes requires a diversified toolkit
![Monitoring Hawaiian volcanoes requires a diversified toolkit...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img5907.jpg?itok=ut6bwpv8)
Detailed Description
Photo caption: USGS Hawaiian Volcano Observatory field engineers upgrade a tiltmeter on Kīlauea Volcano's East Rift Zone. The upgrade consisted of switching the old analog instrument to a newer digital model. This tiltmeter is used to track magma movement within the volcano. USGS photo by K. Kamibayashi.