Scientists temporarily deploy instruments to collect ground-based magnetotelluric (MT) data
HVO staff and collaborators install temporary instruments to collect magnetotelluric (MT) data on Kīlauea volcano’s south flank. At each location, electrodes, induction-coil magnetometers, and data loggers are deployed for 1–2 days. This photo shows a magnetometer being prepared for burial in a narrow and shallow trench to minimize wind noise. This project has been permitted by Hawai‘i Volcanoes National Park and is funded by the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157). USGS photo by A. Ellis.