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March 2024 — Hualālai GPS Survey

Detailed Description

HVO chief field engineer sets up a campaign GPS GNSS unit at station KEHU on Ka'upulehu crater as part of the ongoing Hualālai survey. During the survey, several GPS instruments are deployed at established benchmarks; their recorded positions can be compared with those from previous years to discern subtle patterns of ground deformation since the previous survey in 2015. USGS photo by A. Flinders.


Public Domain.